Military Occupational Classification of Enlisted Personnel

MHI Copyl

A R D E P A R T M E N T T E C H N I C A L M A N U A 1

MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

WAR DEPARTMENT • 12 JULY 1944 WAR DEPARTMENT TECHNICAL MANUAL T M 12-427

Tkis manual together with TM 12-426 (when publislted) supersedes AR 6/5-26', 15 September 7.9-4:', including C 1, 30 January 1943 and C 2, 22 April 1943; Memorandum WG15-29-43, 11 March 1943; Memorandum W615-40-43, II April 1943; Memorandum W615-45-43, 13 May 1943; Memorandum W615-60-43, 17 July 1943; Memorandum W615-63-43, "24 August 1943; Memorandum W615-65-43, 26 August 1943; W615-44,22 March 1944; AC letter 201.6 (18 Oct 43) OC-A-KZ-MB-A, 1 November 1943; section I, Circular No. 43, War Department, 1943; and paragraph 3, Circular No. 141, War Department, 1944.

MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

WA R DEPARTMENT 12 JULY 1944

United States Government Printing Office Wellington: 1944 TM 12-427 Cl TECHNICAL MANUAL MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL CHANGES 1 WAR DEPARTMENT No. 1 I WASHINGTON 25, D. C., 12 April 1945 TM12-427,12 July 1944, is changed as follows: SECTION I. INTRODUCTION TO MILL Page 11, under 5a, General. Change "821 TARY OCCUPATIONAL CLASSIFICA Quartermaster Supply Technician" to read "821 TION OF ENLISTED PERSONNEL Supply Noncommissioned Officer." 1. Insert page 2A containing changes to section I. Page 12, under 6c, Airplane Maintenance and Re 2. Delete paragraph 5, Determination of Soldier's pair. Add in proper numerical order "995 Rotary Military Occupational Specialty (MOS). (See page Wing Mechanic (Helicopter)." 2A for revision.) Page 12, under 6g, Special Equipment Repair. 3. Delete paragraph 6, Recording MOS on Sol Delete "593 Link Trainer Mechanic." Change "969 dier's Qualification Card, W. D., A. G. O. Form No. Link Celestial Navigation Trainer Mechanic" to read 20. (See page 2A for revision.) "969 Synthetic Trainer Mechanic (Designated 4. Page 6, last line, paragraph 14c(2), delete Type)." "potential". Page 13, under 60, Salvage and Repair. Delete "044 Canvas Cover Repairman." Change "924 SECTION n. FUNCTIONAL GROUPING Bomb Salvage Technician" to read "924 Bomb Dis OF MILITARY OCCUPATIONAL SPE posal Technician." CIALTIES Page 14, under 9g, Training (including mainte 1. Delete, add. or change codes and titles under nance) . Delete "658 Link Trainer Instructor" and the various groupings as indicated below (the follow "691 Flexible Gunnery Trainer Operator-Mechanic." Change "970 Link Celestial Navigation Trainer ing changes should be accomplished by writing in changes using margins or other available space) : Operator" to read "970 Synthetic Trainer Operator- Page 9, under la, Light and Heavy Weapons (in Instructor (Designated Type)." cluding organizational maintenance). Change "812 Page 14, under 9h, Miscellaneous. Change "719 Heavy Weapons NCO" to read "812 Heavy Weapons Oxygen and Acetylene Plant Operator" to read "719 Crewman." Add in proper numerical order "9745 Gas Generating Plant Operator." Cavalry Trooper." Page 15, under lOe, Special Services. Change Page 9, under Ib, Field and Coast Artillery (in "274 Writer, Military Subjects" to read "274 Infor cluding organizational maintenance). Change "572 mation Specialist (Designated Subject)." Seacoast Gun Data Computer" to read "572 Seacoast SECTION IH. NUMERICAL LIST OF MILI- Gun Data Computer (Designated Type)." Add in proper numerical order "596 Rocket Crewman." TARY OCCUPATIONAL SPECIALTIES Change "645 Fire Control Instrument Operator, Field 1. Delete the following codes and titles (it is Artillery" to read "645 Fire Direction Center Oper suggested that changes in this section be made in ator." Change "845 Gun Crewman, Heavy Ar the following manner: Line out deleted code and tillery" to read "845 Gun Crewman, Heavy Artillery title and write in suggested substitute code or (Multiple Load)." Add in proper numerical order codes, for example 044" CANY AS COVER "873 Gun Crewman, Heavy Artillery (Single PAIB.MAJ4 Use 609): Load)." Deleted Suggested substitute Page 10, under le, Air Crew. Delete "2867 code Deleted title code or codes Radar Observer-Mechanic, Bombardment." 044 CANVAS COVER REPAIRMAN_____ 609 593 LINK TRAINER MECHANIC______969 Page 10, under 26, Intelligence and Operations. 658 LINK TRAINER INSTRUCTOR_____ 970 Change "768 Control Center Technician" to read 691 FLEXIBLE GUNNERY TRAINER OPER ATOR-MECHANIC___-_____— 969, 970 "768 Intercept Control Technician." Add in proper 2857 RADAR OBSERVER-MECHANIC BOM numerical order "561 Aircraft Approach Controller, BARDMENT______Obsolete GCA" and "890 Photo-Interpreter." 2. Change titles to read as indicated below (it is Page 10, under 36, Telephone and Telegraph. suggested that changes be made by writing or Add in proper numerical order "646 Telephone and pasting in the new title as space permits) : Telegraph Equipment Repairman." 274 INFORMATION SPECIALIST (Designated Page 10, under 3c, Radio and Radar Operation. Field). 572 SEA COAST GUN DATA COMPUTER (Desig- Add in proper numerical order "3766 Radio Oper nated Type). " ' ator, Marine." 645 FIRE DIRECTION CENTER OPERATOR.

AGO174A—Apr. 637401°—45- TM 12^.27 12 Apr 45 C 1

719 GAS GENERATING PLANT OPERATOR. teletype equipment at the minimum speed per minute 763 INTERCEPT CONTROL TECHNICIAN. of 30 clear text words (five strokes per word) over 812 HEAVY WEAPONS CREWMAN. 821 SUPPLY NONCOMMISSIONED OFFICER. a test period of 5 minutes." 845 GUN CREWMAN, HEAVY ARTILLERY Page 52, WRITER, MILITARY SUBJECTS (MULTIPLE LOAD). (274), title changed to "INFORMATION SPE 924 BOMB DISPOSAL TECHNICIAN. CIALIST (Designated Field) (274)" and specifi 969 SYNTHETIC TRAINER MECHANIC (Desig nated Type). cation revised. (Insert page 52A.) 970 SYNTHETIC TRAINER OPERATOR-IN Page 55, INVESTIGATOR (301). Delete alter STRUCTOR (Designated Type). nate title "Fingerprinter." Delete last sentence ol 3. Insert page 20A, Supplemental Numerical List paragraph 2, "May obtain and classify prints." of Military Occupational Specialties. Page 57, SHOP MAINTENANCE MECHANIC (341), add alternate titles "Plant Maintenance Me SECTION IV. SPECIFICATIONS FOR MILI chanic" and "Millwright" TARY OCCUPATIONAL SPECIALTIES Page 57, MASTER MECHANIC (342), delete alternate title "Millwright." 1. Change titles and specifications as indicated Page 66, SAFETY INSPECTOR (486), add alter below (the following revisions should be accom nate title "Ground Safety Technician (AAF)." plished by writing in changes using margins or other Page 68, RADAR CREWMAN (DESIGNATED available space) : SET) (514), change alternate title "Portable Power Page 21, AUTOMOTIVE MECHANIC (014), Generator, Operator" to read "Portable Power Gen (SECOND ECHELON) last paragraph, line 2, erator Operator, Radar." change to read "and coordination of motor mainte Page 72, CONTROL TOWER OPERATOR (552), nance or motor transport activities." end of paragraph 3, add "Must be qualified in the Page 24, CANVAS COVER REPAIRMAN (044), use of blinker light equipment and the system of change to "LEATHER AND CANVAS WORKER codes used with such equipment in control tower (609)." operations." (Insert page 72A.) Page 25, CLERK, GENERAL (055). Add in Page 73, ELECTRICIAN HARBOR DEFENSE alphabetical sequence alternate title "Fingerprinter." (571), under Suggested Substitutes, change "572 End of paragraph 2, add "May take fingerprints." Seacoast Gun Data Computer" to read "572 Sea- Page 28, PHYSICAL THERAPY TECHNICIAN coast Gun Data Computer (Designated Type)." (072), specification revised. (Insert page 28A.) . Page 74, SEACOAST GUN DATA COMPUTER Page 29, ENGINEMAN, OPERATING (081), (572), title changed to "SEACOAST GUN DATA paragraph 1, line 2, change "used for generating COMPUTER (Designated Type) (572)" and speci power." to read "to provide motive power for air fication revised. (Insert page 74A.) compressors, pumps, power driven decontaminating Page 77, LINK TRAINER MECHANIC (593), units and similar power driven units." change to "SYNTHETIC TRAINER MECHANIC Page 31, CENTRAL OFFICE REPAIRMAN (Designated Type) (969)." (095), change alternate title "Telephone and Tele Page 77, ANTIAIRCRAFT ARTILLERY AUTO graph Equipment Repairman (AAF)" to read MATIC WEAPONS CREWMAN (601), specifica "Telephone and Telegraph Equipment Mechanic tion revised. (Insert page 76A.) (AAF)." Page 78, GUN CREWMAN, COAST ARTIL Page 46, SURVEYOR (227). Paragraph 1, first LERY (608). Paragraph 1, lines 1 and 2 delete line, change "Supervises a survey party engaged in "of major caliber." Under Suggested Substi determining data" to read "Sets up and operates tutes, change "845 Gun Crewman, Heavy Artillery" surveying instruments to determine data." End of to read "845 Gun Crewman, Heavy Artillery paragraph 3, add "May supervise survey party." (Multiple Load)." Add in proper numerical order Page 46, SURVEY'AND INSTRUMENT MAN "864 Gun Crewman, Medium Artillery" and "873 (223). Paragraph 1, line 4, after "drainage," in Gun Crewman, Heavy Artillery (Single Load)." \ sert "mine field." Paragraph 3, line 2, delete "BC Page 79, LEATHER AND CANVAS WORKER Scope." Under Suggested Substitute, change "645 (609), add alternate title "Canvas Cover Re Fire Control Instrument Operator, FA" to read "645 pairman." Fire Direction Center Operator." Page 79, ANTITANK GUN CREWMAN (610), Page 47, TELETYPE OPERATOR (237). change first sentence of paragraph 2 to read "As Change second sentence of paragraph 2, to read: crew member may drive vehicle on which gun is "May operate equipment using perforated tape for mounted or by which gun is towed." transmission and reception." Change first sentence Page 82, FIRE CONTROL INSTRUMENT of paragraph 3, to read: "Must be able to operate OPERATOR, FIELD ARTILLERY (645). Change

11 AGO 17€«_ 12 Apr 45 TM 12-427 C 1 title to read "FIRE DIRECTION CENTER OPER "HEAVY WEAPONS CREWMAN (812)" and ATOR." Change alternate titles to read "Com specification revised. (Insert page 102A.) puter, Fire Direction," "Horizontal Control Oper Page 104, QUARTERMASTER SUPPLY TECH ator," and "Vertical Control Operator." Delete NICIAN (821), title changed to "SUPPLY NON last two sentences of paragraph 2, "In a firing bat COMMISSIONED OFFICER (821)" and specifica- tery, sets up and operates such fire control instru tion revised. (Insert page 104A.) ments as aiming circle and range finder. Performs Page 104, UTILITIES NCO (822). Paragraph survey operations when required." (Insert page 1, line 3, change "power, and water supply" to read 82A.) "power, water supply,". Paragraph 1, lines 4 and Page 84, LINK TRAINER INSTRUCTOR (658), 5, delete "at a post, camp, station, or depot." change to "SYNTHETIC TRAINER OPERATOR- Page 107, MARINE ENGINEMAN (839), para INSTRUCTOR (Designated Type) (970)." graph 1, line 2, change "landing" to read "water." Page 86, MESSAGE. CENTER CHIEF (674). Page 108, GUN CREWMAN, LIGHT ARTIL Change parenthetical statement preceding first para LERY (844), specification revised. (Insert page graph by deleting "units below a division." and sub 108A.) stituting therefor "other than Signal Corps units.". Page 108, GUN CREWMAN, HEAVY ARTIL Paragraph 1, line 1, after "of" insert "Signal Corps." LERY (845), title changed to "GUN CREWMAN Page 86, MILITARY POLICEMAN (677). End HEAVY ARTILLERY (MULTIPLE LOAD) of paragraph 3, add "and apprehends absentees." (845)" and specification revised. (See page Paragraph 4, line 2, before "including" insert "pris 108A.) oners of war and enemy aliens." Page 110, RADAR MECHANIC, IFF (862), Page 88, FLEXIBLE GUNNERY TRAINER specification revised. (Insert page 110A.) OPERATOR-MECHANIC (691), change to "SYN Page 110, RADAR MECHANIC, GCA (863), THETIC TRAINER MECHANIC (Designated specification revised. (See page 110A.) Type) (969)" or "SYNTHETIC TRAINER OPER Page 111, GUN CREWMAN, MEDIUM ARTIL ATOR-INSTRUCTOR (Designated Type) (970)," LERY (864), specification revised. (Insert page whichever is appropriate. HOB.) Page 89, STABLE SERGEANT (710), add alter Page 111, RADIO-TELETYPE MECHANIC nate title "Stable Orderly." (868), specification revised. (See page HOB.) Page 90, OXYGEN AND ACETYLENE PLANT Insert page 112A. OPERATOR (719), title changed to "GAS GEN Page 117, BOMB SALVAGE TECHNICIAN ERATING PLANT OPERATOR" and specification (924), change title to read "BOMB DISPOSAL revised. (Insert page 90A.) TECHNICIAN (924)." Page 91, PIONEER (729). Paragraph 2, lines Page 123, LINK CELESTIAL NAVIGATION 1 and 2, delete "In advances against enemy, pre TRAINER MECHANIC (969), title changed to cedes friendly forces and clears passage ways." "SYNTHETIC TRAINER MECHANIC (Designated Paragraph 2, lines 10, 11 and 12, delete "In retreat Type) (969)" and specification revised. (Insert from enemy, remains behind to impede enemy ad page 122A.) vance." Paragraph 3, line 1, change "Equipment Page 123, LINK CELESTIAL NAVIGATION includes air compressors;" to read "Equipment may TRAINER OPERATOR (970), tide changed to include air compressors;". "SYNTHETIC TRAINER OPERATOR-INSTRUC Page 92, FULL TRACK DRIVER (735). Para TOR (Designated Type) (970)" and specification graph 1, line 1, after "high-speed" insert "or." revised. (See page 122A.) Change paragraph 3 to read "May drive a tank* or Page 124, CHEMICAL WARFARE MAN, GEN self-propelled gun." ERAL (979), specification revised. (Insert page Page 95, RADIO OPERATOR, AAF (756), 124 A.) paragraph 4, line 3, insert "per hour" before "in." Page 125, GUN CREWMAN, PACK ARTIL Page 95, RADIO OPERATOR-MECHANIC- LERY (1531), specification revised. (Insert page GUNNER, AAF (757), paragraph 4, line 3, insert 124B.) "per hour," before "in." Page 125, RANGE SECTION OPERATOR, Page 98, CONTROL CENTER TECHNICIAN ANTIAIRCRAFT (1645), add alternate title "Port (768), title changed to "INTERCEPT CONTROL able Power Generator Operator, Antiaircraft Artil TECHNICIAN (768)" and specification revised. lery Gun," (Insert page 98A.) Page 128, RADIO OPERATOR AND ME Page 102, HEAVY WEAPONS NONCOMMIS CHANIC, AAF (2756), paragraph 4, line 3, insert SIONED OFFICER (812), title changed to "per hour" before "in."

AGO 174,4 TM 12-427 12 Apr 45 C 1 Page 129, RADAR OBSERVER-MECHANIC, Ammunition Handler, Heavy Artillery (Mul- tiplo Load) ______845 BOMBARDMENT (2367), delete. (Obsolete en Ammunition Noncommissioned Officer, Heavy listed specialty, no substitute.) Artillery (Multiple Load)______845 Page 129, ANTIAIRCRAFT ARTILLERY BOMB DISPOSAL TECHNICIAN._____ 924 Cannoneer, Heavy Artillery (Multiple Load) — 845 AUTOMATIC WEAPONS CREWMAN, SP (3601), Canvas Worker______. 609 specification revised. (Insert page 128A.) Computer, Fire Direction.___—___—_ 645 Insert page 130A. Computer, Gun Data, Seacoast (Designated Type) ______^______572 Criminal Identification Laboratory Technician. 301 SECTION V. ALPHABETICAL INDEX OF Fingerprinter-_._—._—__—_—_——-.__ 055 MILITARY SPECIALTIES Fire Direction Computer______645 Firearms Identification Specialist—______301 1. Delete the following titles and codes (it is sug GUN CREWMAN, HEAVY ARTILLERY gested that changes in this section be made by lining (MULTIPLE LOAD)______845 Gunner, Heavy Artillery (Multiple Load) ___ 845 out deleted title and code, and writing in suggested Heavy Artillery Gun Crewman (Multiple substitute code or codes, for example, €A-N¥A-S Load) ______845 COVER REPAIRMAN 844 Use 609): HEAVY WEAPONS CREWMAN______812 Horizontal Control Operator______645 Suggested tub- Deleted stituied codt Instructor, Link Trainer. (Set 970.) Deleted titles code* or cadet Instrument Man, Survey (Field Artillery)___ 228 CANVAS COVER REPAIRMAN___ 044 609 Mechanic, Link Trainer. (See 969.) CONTROL CENTER TECHNICIAN.. ___ 768 Mechanic-Operator, Flexible Gunnery Trainer. Field Artillery Fire Control Instrument (See 969 or 970.) Operator______—_.._ _._ 645 MESSAGE CENTER CHIEF (Signal Corps •FIRE CONTROL INSTRUMENT OP Units) ______—____ 674 ERATOR FIELD ARTILLERY__ ___ 645 Message Center Chiei (Other than Signal Corps FLEXIBLE GUNNERY TRAINER Units) ______667 OPERATOR-MECHANIC______691 969,970 Millwright ______-______341 LINK CELESTIAL NAVIGATION Portable Power Generator Operator, Anti TRAINER MECHANIC______.__ 969 aircraft Artillery, Radar______514 LINK CELESTIAL NAVIGATION Repairman, Canvas Cover______-_____ 609 TRAINER OPERATOR ______970 SEACOAST GUN DATA COMPUTER (Des LINK TRAINER INSTRUCTOR___ 658 970 ignated Type)_.______. 572 LINK TRAINER MECHANIC____ 593 969 Stable Orderly______.______710 Mechanic-Observer, Radar Bombard Telephone and Telegraph Equipment Me ment _..—.-—————.—_—.— 2867 Obsolete chanic (AAF)______095 Observer-Mechanic, Radar Bombard Vertical Control Operator——_————————— 645 ment _'______2867 Obsolete OXYGEN AND ACETYLENE PLANT 3. Insert page 146A, Supplemental Alphabetical OPERATOR______719 Index of Military Occupational Specialties. Photo-Interpreter ______070 890 QUARTERMASTER SUPPLY TECH Appendix II, Army Specialized Training Codes, NICIAN______: ______821 is changed as follows: RADAR OBSERVER-MECHANIC 1. Page 165, directly under heading Engineering, BOMBARDMENT-______286? Obsolete Storage Battery Electrician______078,912 insert "Engineering (Term 3), BMO, A01." WRITER, MILITARY SUBJECTS__ __. 274 2. Page 165, under heading Miscellaneous, change 2. Change tbe following titles and/or codes to "Linguistic fields (Term 9L), Z10, A92" to read read as indicated below: "Linguistic fields (Term 9L), ZLO, A92." [AC 300.7 (7 Feb 45)] BY ORDER OF THE SECRETARY OF WAR:

OFFICIAL: G. C. MARSHALL J. A. ULIO Chief of Staff Major General The Adjutant General

DISTRIBUTION: AAF (10); AGF (10); ASF (2); T of Opn (1); Dept (10); Def Comd (5); AAF Comd (25); Arm & Sv Bd (2) ; S Div ASF (1); Tech Sv (2); SvC (10) ; PC&S (1) ; GH (25); M Cone C (25); Sp Sv Sch (10); USMA (2); ROTC (1); ASTU (1); Repl Tng C (25); RC (25); D (25); B (3); R (4); SBn (3); Bn (1); C (1); AF (25). Refer to FM 21-6 for explanation of distribution formula.

rv AGO 1', B. I. GOVERNMENT PRIKTIRQ OFFtCf [1945 TM 12-427 C 2

TECHNICAL MANUAL

MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

Changes! WAR DEPARTMENT No. 2 | Washington 25, D. C., 30 June 1945 TM 12-427, 12 July 1944, is changed as follows:

SECTION I. INTRODUCTION TO MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL Page 6, delete subparagraph f, Tables of Organization and Tables of Organization and Equipment. SECTION II. FUNCTIONAL GROUPING OF MILITARY OCCUPATIONAL SPECIALTIES Remove pages 9 and 10 and substitute revised pages 9, 10, and 10A herewith. Page 13, under Ic Veterinary. Change "120 Meat or Dairy Inspector" to read "120 Meat or Dairy Technician." Page 14. under 9a Surveying and Drafting. Change "004 Aerial Phototopographer" to read "004 Aerial Phototopographer (Designated Equipment)." Remove pages 15 and 16 and substitute revised pages 15 and 16. SECTION III. NUMERICAL LIST OF MILITARY OCCUPATIONAL SPECIALTIES Page 17, delete "232 SWITCHBOARD INSTALLER-REPAIRMAN, MANUAL," substi tuting the words "(USE 095 CENTRAL OFFICE TECHNICIAN)." Page 19, change "748 AIRPLANE MECHANIC-GUNNER" to read "748 FLIGHT MAINTE NANCE GUNNER." Add new {Sage 20A. SECTION IV. SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES Remove pages 21 and 22 and substitute revised pages 21, 22, and 22A herewith. Page 25, CLERK GENERAL (055), change alternate title "Mail Orderly" to read "Mail Clerk." Remove pages 31 and 32 and substitute revised pages 31, 32. and 32A herewith. Page 35, MEAT OR DAIRY INSPECTOR (120). Change title to read "MEAT OR DAIRY TECHNICIAN (120)." Change alternate titles "Dairy Inspector" and "Meat Inspector" to read "Dairy Technician" and "Meat Technician." Delete "037 Meat Cutter" as suggested substitute. Remove pages 39 and 40 and substitute page 39, and revised pages 40 and 40A herewith. Remove pages 47 and 48 and substitute revised pages 47 and 48 herewith. Remove page 52A and substitute revised page 52A herewith. Remove pages 76A, 77, and 78 and substitute revised pages 77, 78, and 78A herewith. Remove pages 81, 82, and 82A and substitute page 81, and revised pages 82 and 82A herewith. Page 94, AIRPLANE MECHANIC-GUNNER (748). Change title to read "FLIGHT MAIN TENANCE GUNNER (748)." Delete alternate title "Aerial Engineer-Gunner." Page 122, MECHANIC, AUTOMOTIVE, WHEEL VEHICLE. (THIRD ECHELON) (965), paragraph 2, line 2. change "Overhauls accessory" to read "Repairs accessory." Remove pa2es 122A, 123, 124, 124A, 124B, 125, 126, 127, 128, 128A, 129, 130, and 130A, and substitute revised pages 123 through 130, 130A, 130B, and 130C. SECTION V. ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES Page 131. Delete "Aerial Engineer-Gunner (748)." Change "AERIAL PHOTOGRAPHER (004)" to read "AERIAL PHOTOGRAPHER (Designated Equipment) 004." Delete "AIRPLANE MECHANIC-GUNNER 748." Page 134, change "CENTRAL "OFFICER REPAIRMAN 095" to read "CENTRAL OFFICE TECHNICIAN 095." Pat;e 135, change "Dairy Inspector 120" to read "Dairy Technician 120." Page 137, delete "Harbor Craft Coxswain 823." AGO283A—July 657007°—i5 TM 12-427 30 Jtm 45 C 2 Page 139. Change "Mail Orderly 055" to read "Mail Clerk 055." Change "MEAT OR DAIRY INSPECTOR 120" to read "MEAT OR DAIRY TECHNICIAN 120." Change "Meat Inspector 120" to read "Meat Technician 120." Remove page 146A and substitute revised page 146A herewith. Remove pages 147 through 164 and substitute revised pages 147 through 150 herewith. Renumber page 165 as page 151. IA.G 300.7 (26 Jun 45)| BY ORDER OF THE SECRETARY OF WAR:

OFFICIAL: G. C. MARSHALL J. A. ULIO Chief of Staff Major General The Adjutant General

DISTRIBUTION: AAF (10); AGF (10); ASF (2); T of Opn (1); Dept (10); Def Comd (5); AAF Comd (25); Arm & Sv Bd (1); S Div ASF (1); Tech Sv (2); SvC (10); PC & S (1); GH (25); M Cone C (25); Sp Sv Sch (10); USMA (2); ROTC (1); ASTU (1); Repl Tng C (25); RC (25); D (25); B (3); R (4); S Bn (3); Bn (1); C (1); AF (25). T/O & E 8-550 & 8-550S. Refer to FM 21-6 for explanation of distribution formula. TM 12-427 C 3 TECHNICAL MANUAL

MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

CHANGES! WAR DEPARTMENT No. 3 J WASHINGTON 25, D. C., 5 February 1946

TM 12-427, 12 July 1944, is changed as follows: SECTION II. FUNCTIONAL GROUPING OF MILITARY OCCUPATIONAL SPECIALTIES Page 10, under 36, Telephone and Telegraph. Change "187 Repeaterman, Telephone" to read "187 Repeaterman, Field." Delete "384 Installer, Toll Telephone and Telegraph." Add in proper numerical order "1187 Repeaterman, Fixed Plant." Page 11, under 4e, Air Transportation. Add in proper numerical order "996 Air Traffic Service Technician." Page 11, under 5a, General. Change "348 Parts Clerk, Automotive" to read "348 Parts Clerk." Delete "848 Parts Clerk, Armament." Page 11, under 6a, Armament Repair. Change "915 Artillery Mechanic, Heavy Antiaircraft" to read "915 Artillery Mechanic, Antiaircraft Artillery." Delete "978 Artillery Mechanic, Light Anti aircraft." Page 14, under 10a, Clerical—Administrative. Add in proper numerical order "268 Accountant."

SECTION III. NUMERICAL LIST OF MILITARY OCCUPATIONAL SPECIALTIES Page 16. Change "187 REPEATERMAN, TELEPHONE" to read "187 REPEATERMAN' FIELD." Page 17. Change "348 PARTS CLERK, AUTOMOTIVE" to read "348 PARTS CLERK." Page 17. Delete "384 INSTALLER, TOLL TELEPHONE AND TELEGRAPH." Page 19. Delete "848 PARTS CLERK, ARMAMENT." Page 19. Change "855 DENTAL TECHNICIAN" to read "855 DENTAL ASSISTANT." Page 19. Change "915 ARTILLERY MECHANIC, HEAVY ANTIAIRCRAFT" to read "915 ARTILLERY MECHANIC, ANTIAIRCRAFT ARTILLERY." Page 20. Delete "978 ARTILLERY MECHANIC, LIGHT ANTIAIRCRAFT." Remove page 20A and substitute revised page 20A herewith.

SECTION IV. SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES Page 27, DENTAL LABORATORY TECHNICIAN (067). Under suggested substitutes, change "855 Dental Technician" to read "855 Dental Assistant." Page 31, CENTRAL OFFICE TECHNICIAN (095). Delete "384 Installer Repairman, Toll Telephone and Telegraph" as suggested substitute. Page 34. AUTOMATIC TELEPHONE SYSTEM MAINTENANCE MAN (115). Delete "232 Switchboard Installer-Repairman, Manual" as a suggested substitute. Remove pages 41 and 42 and substitute revised pages 41 and 42 and add page 42A herewith. Page 48. TOOLROOM KEEPER (242). Under suggested substitutes, change "348 Parts Clerk, Automotive" to read "348 Parts Clerk." Delete "848 Parts Clerk, Armament." Page 50. WIRE CHIEF, TELEPHONE AND TELEGRAPH (261). Under suggested substitutes change "095 Central Office Repairman" to read "095 Central Office Technician." Remove pages 51, 52, and 52A and substitute revised pages 51, 52, and 52A herewith.

AGO 3008A—Feb. 681719°—46 * TM 12-427 5Feb46 C3 Remove pages 55, 56, 57, and 58 and substitute revised pages 55, 56, 57 and 58, and add page 58A herewith. Pages 59 and 60. Delete "INSTALLER, TOLL TELEPHONE AND TELEGRAPH (384)." Page 64. SHOP CLERK (457). Under suggested substitutes, change "348 Parts Clerk, Auto, motive" to read "348 Parts Clerk." Delete "848 Parts Clerk, Armament." Page 71. COXSWAIN, MINE YAWL (546). Delete "823 Coxswain, Harbor Craft" as a suggested substitute. Pages 75 and 76. SIGNAL SUPPLY TECHNICIAN (581). Under suggested substitutes, change "821 Quartermaster Supply Technician" to read "821 Supply Noncommissioned Officer." Page 103. ORDNANCE SUPPLY NCO (815). Under suggested substitutes, change "348 Parts Clerk, Automotive" to read "348 Parts Clerk." Change "821 Quartermaster Supply Techni cian" to read "821 Supply Noncommissioned Officer." Delete "848 Parts Clerk, Armament." Pages 104 and 105. MEDICAL SUPPLY NCO (825). Under suggested substitutes, change "821 Quartermaster Supply Technician" to read "821 Supply Noncommissioned Officer." Page 105. ARMY AIR FORCES SUPPLY TECHNICIAN (826). Under suggested substi tutes, change "348 Parts Clerk, Automotive" to read "348 Parts Clerk." Delete "848 Parts Clerk, Armament." Remove pages 107, 108, 108A, 109, 110, 110A, HOB, 111, 112, and 112A and substitute revised pages 107, 108, 109, 110, 111, 112, and 112A herewith. Remove pages 115 and 116 and substitute revised pages 115 and 116, and add page 116A herewith. Pages 118 and 119. AMPHIBIAN TRUCK DRIVER (934). Delete "823 Coxswain, Harbor Craft" as suggested substitute. - Pages 120 and 121. WIRE REPAIRMAN, VHF (950). Delete "232 Switchboard Installer- Repairman, Manual," and "384 Installer, Toll Telephone and Telegraph" as suggested substitutes. Page 124. CHIEF ARTILLERY MECHANIC (973). Under suggested substitutes, change ''915 Artillery Mechanic, Heavy Antiaircraft" to read "915 Artillery Mechanic, Antiaircraft Artillery." Delete "978 Artillery Mechanic, Light Antiaircraft." Page 124. Delete "ARTILLERY MECHANIC, LIGHT ANTIAIRCRAFT ARTILLERY (978)." Remove pages 125 and 126 and substitute revised pages 125 and 126 and add page 126A herewith.

SECTION V. ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES Page 132. Change "Antiaircraft Artillery Mechanic, Light (978)" to read "Antiaircraft Artillery Mechanic, Light (915)." Delete "ARTILLERY MECHANIC, HEAVY ANTIAIRCRAFT (915)" and "ARTILLERY MECHANIC, LIGHT ANTIAIRCRAFT (978)." Page 134. Change "Clerk, Parts, Armament (848)" to read "Clerk, Parts, Armament (348)." Page 135. Delete "DENTAL TECHNICIAN (855)." Page 138. Delete "Installer-Repairman, Switchboard, Manual (232)" and "INSTALLER, TOLL TELEPHONE AND TELEGRAPH (384)." Page 139. Change "Mechanic Artillery, Light Antiaircraft (978)" to read "Mechanic, Artillery, Light Antiaircraft (915)." Page 141. Delete "PARTS CLERK, ARMAMENT (848)" and "PARTS CLERK, AUTOMO TIVE (348)." Page 144. Change "REPEATERMAN, TELEPHONE (187)" to read "REPEATERMAN, FIELD (187)." Page 145. Delete "Switchboard Installer, Manual, Telephone and Telegraph (232)," "SWITCH BOARD INSTALLER-REPAIRMAN, MANUAL (232)," "Telephone and Telegraph Installer, Toll (384)," and "Toll Telephone and Telegraph Installer (384)." Remove page 146.A and substitute revised page 146A and add page 146B herewith.

II AGO 3006A 5Feb46 TM 12-427 C3 APPENDIX I. CONVERSION OF DELETED SPECIFICATION SERIAL NUMBERS Page 147. Add in proper numerical order "232 ...... 095." Page 148. Add in proper numerical order "384 ...... 187, 1187." Page 149. Add in proper numerical order "848 ...... 348" and "978 ...... 915." [AG 300.7 (25 Jan 46)1

BY ORDER OF THE SECRETARY OF WAR:

OFFICIAL: D WIGHT D. EISENHOWER EDWARD F. WITSELL Chief of Staff Major General The Adjutant General

DISTRIBUTION: AAF'(IO); AGF (10); ASF (2); T of Opn (1); Dept (10); Def Comd (5); AAF Comd (25); Arm & Sv Bd (1); S Div ASF (1); Tech Sv (2); SvC (10); FC (1); Class III Instl (1); GH (25); M Cone C (25); Sp Sv Sch (10); ROTC (1); ASTU (l);.Repl Tng C (25); RC (25); D (25); B (3); R (4); S Bn (3); Bn (1); C (1); AF (25). Refer to FM 21-6 for explanation of distribution formula.

AGO 3006A HI u 40 TM 12-427 A3U C4 TECHNICAL MANUAL MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

CHANGES DEPARTMENT OF THE ARMY No. 4 WASHINGTON 25, D. C., 16 May 1949 TM 12-427,12 July 1944, is changed as follows:

1. Additions SSN 2017 MASTER BAKER a. The following specification serial numbers 2301 CRIMINAL LABORATORY DOCU and titles are added to section III in numerical MENT TECHNICIAN sequence: 2409 ELECTROENCEPHALOGRAPHIC SSN TECHNICIAN 062 FOOD SERVICE APPRENTICE 2411 NUTRICULTURE TECHNICIAN 212 STATISTICAL CLERK 2635 SPECIAL ELECTRICAL DEVICE RE 630 COMPANY* ADMINISTRATIVE PAIRMAN CLERK 2649 RADIO REPAIRMAN, SINGLE SIDE 666 COMPANY AIDMAN BAND 816 PERSONNEL ADMINISTRATIVE 2677 SECURITYMAN TECHNICIAN 3067 PROSTHETIC EYE TECHNICIAN 3160 1017 PASTRY BAKER SOILS ANALYST 3167 REPRODUCTION EQUIPMENT RE 1037 MASTER MEAT CUTTER PAIRMAN 1072 OCCUPATIONAL THERAPY TECH- 3274 RECRUITER , .NICIAN 3649 MICROWAVE RADIO EQUIPMENT 1160 CRIMINAL LABORATORY BALLIS REPAIRMAN \ TICS TECHNICIAN 4040 AUTOMOBILE BODY REPAIRMAN 1189 SHIP RIGGER 4162 MARINE PIPE FITTER 1229 MEDICAL EQUIPMENT REPAIRMAN 5. The following titles, specification serial num 1283 PHYSICAL RECONDITIONING IN bers, and specifications for military occupational STRUCTOR specialties are added to sectioi| IV in numerical 1301 COUNTER INTELLIGENCE INVESTI sequence: GATOR (CIC) 1405 CLERK-TYPIST (CIC) FOOD SERVICE APPRENTICE (062) 1409 NEUROPSYCHIATRIC TECHNICIAN 1411 CRIMINAL LABORATORY CHEMI Grades 6 and 5 CAL ANALYST Assists cooks, meat cutters, bakers, or pastry 1521 BASIC TRAINEE bakers in the preparation and serving of food, in 1599 RADIOTELEPHONE OPERATOR meat cutting, or in baking bread and pastry prod 1631 ORDER OF BATTLE SPECIALIST ucts by performing elementary tasks in one of 1677 DISCIPLINARY GUARD these specialties in order to become familiar with 1799 RADIO COMMUNICATIONS INTER techniques and procedures of these specialties. CEPTOR Assists cooks and prepares food for cooking by 1824 FOOD SERVICE TECHNICIAN washing, peeling, cutting, and dicing fruits and 1994 .RADIO-CONTROLLED TARGET AIR vegetables; cutting meats; and counting, weigh PLANE CONTROLLER ing, or measuring ingredients as required by recipe- •Substitute appropriate title—Troop, Battery, Squadron. Prepares mess halls for serving by arranging 837912°—49———1 furniture, setting tables, and placing food on formation in the statistical organizations above tables. Portions food in serving lines. the post or division level of the Army Field Forces. Assists bakers and mixes ingredients for bread Assembles and checks for accuracy, consistency, and pastry products by weighing or counting pre and completeness all data included in recurring scribed quantities and placing them in mixing and special statistical reports concerning person machine in manner specified by baker. Greases nel, training operations, supply, equipment facili baking pans. Inserts pans of dough or batter into ties, maintenance, and related subjects. Compiles ovens and removes them when baking is completed. data from basic reports as a basis for consolidated Places finished products on cooling racks and reports. Extracts, calculates, and tabulates data counts and packs them for delivery. needed for special studies and analyses on a wide Assists meat cutters and moves carcasses and variety of subjects. Prepares statistical data for quarters to cutting tables and chopping blocks. . tabular and graphic presentation. May audit the Places waste in suitable containers. Performs work of subordinate statistical clerks and other simple cutting and boning operations. Assists in clerical personnel and edit tabulations and explan rendering fats. atory material for final presentation. May super Cleans utensils, tools, and equipment, and work vise statistical draftsmen, file clerks, typists, cal ing area in conformity with principles of sani culating machine operators, and general clerks. tation. Must be able to operate efficiently adding Must know how to arrange perishable and non- machines, comptometers, calculating machines, perishable foods and supplies in kitchen or bakery and related office equipment. Must be familiar storerooms or in meat coolers and freezers. Must with the application of machine accounting and know how to observe safety measures prescribed reporting methods, including punchcard equip for using kitchen, bakery, and meat-cutting equip ment. Must be qualified to perform all basic ment. mathematical computations and apply elementary Must meet requirements for permanent food statistical techniques and formulae, including handler outlined in AE 40-205 and be free from tabular and graphic presentation. disqualifying allergic reactions to food. Must possess either of the following minimum COMPANY* ADMINISTRATIVE CLEEK physical profiles for assignment to this military (630) occupational specialty under conditions indicated: As administrative assistant to the first sergeant, Base 323233 Field 323222 performs various clerical and typing duties at the company level. Examples of duty positions for which gwlified— Prepares morning reports. Keeps sick book Grade depends upon number of persons super current. Files or posts orders from higher head vised, degree of skill and technical proficiency re quarters, Army Regulations, Department of the quired, and degree of responsibility. Army circulars, training memorandums, bulletins, Food service apprentice, grades 6 and 5. and manuals. Types and maintains personnel Mess attendant, grade 6. status cards, reports, roll call, and duty rosters. Dining room orderly, grade 6. Types and files company correspondence, company Apprentice cook, grade 5. orders, notices, bulletins, and weekly training Apprentice baker, grade 5. progress reports and records. Types indorse Apprentice pastry baker, grade 5. ments for company commander's signature, re Apprentice meat cutter, grade 5. quests for promotion, transfer, or discharge, passes, letters, charge sheets, expected testimony, and other routine forms and correspondence. STATISTICAL CLEEK (212) Handles administrative details in preparation and forwarding of enlisted efficiency reports. Pre Statistical Control Clerk pares and types special reports for higher head Performs or supervises specialized clerical func quarters concerning personnel, supply, or training tions connected with the collection, processing, interpretation and presentation of statistical in •Substitute appropriate title—Troop, Battery, Squadron. matters. Keeps unit bulletin board currently measures to insure adequate insect control, waste posted. Informs unit personnel office of any disposal, and water purification in the company financial or personnel matters not carried on the area. Administers vaccines to preserve health morning report, which may affect the service and prevent disease. Treats tender feet to pre record or qualification card. Advises military vent or remove blisters and callouses. Straps personnel concerning correspondence, self-teach minor sprains and strains with adhesive tape. ing, and university extension courses available Dispenses stock medical solutions and medications through the United States Armed Forces Insti such as aspirin and liniment for minor injuries tute, to facilitate preparation for advancement and ailments. under the career guidance program. Keeps a Must have basic knowledge of anatomy, physi suspense file on unit activities. Makes entries ology, materia medica, and the medical evacuation in company punishment book. Acts as reception system. Must be trained to proficiency of the ist for unit headquarters and representative of units of the combat arms to which assigned. Must first sergeant and unit commander in their be capable of performing exacting duties under absence. fire, remaining calm and collected at all times. May type duplicator stencils and carbons. Must use judgment in the administration of stand May drive y^-ton truck or similar light vehicles. ard medications without close professional super Must be able to type accurately at 15 words per vision. Must use tact and be able to reassure minute or better. Must have a good knowledge patients and command their respect and confidence of military correspondence. Must be familiar in administering emergency medical treatment. with all regulations, manuals, and procedures per taining to administration at the company level. PERSONNEL ADMINISTRATIVE TECHNI- Must be familiar with the T/O&E of the unit to . CIAN (816) which assigned and with military occupational Performs Army administrative, personnel clas specialties represented therein. sification, and other miscellaneous clerical duties in a military unit. COMPANY AIDMAN (666) Prepares reports, correspondence, records, and forms on personnel matters, including pay roll, Administers emergency medical aid to casual special orders, coding machinery procedures, ties either on or off the battlefield and prepares morning reports, sick reports, rosters, leaves, fur them for further evacuation to the rear. loughs, and discharges. Receives information as to the location of the Interviews enlisted men to obtain necessary in wounded, and approaches casualty, following formation for maintenance of their records and rules of cover and concealment. Examines cas for their proper classification and assignment. ualty to determine extent of injury and condition. Must be able to type accurately at 20 words per Treats casualty for shock or loss of blood.. Ad minute or better. Must have good general knowl ministers standard medications to relieve pain or edge of military filing system and of military cor prevent infection. Stops hemorrhages, and respondence. Must be familiar with all regula dresses and bandages wounds. Improvises and tions, manuals, and procedures pertaining to mili applies splints to immobilize fractures, disloca tary personnel classification and with methods of tions, and sprain. Prepares emergency medical punching, coding, and maintenance of officers' and tag indicating treatment rendered, and attaches enlisted men's qualification records. Should be tag to casualty. Places casualty in marked pro familiar with the requirements of all jobs in the tected area to await arrival of litter bearers or unit to which assigned. ambulances. Directs walking wounded to aid station or ambulance loading point. Keeps bat PASTRY BAKER (1017) talion surgeon informed of medical situation by Grade 4 means of messages sent back by litter bearer, walking wounded, or ambulance drivers. Mixes, makes up, bakes, and finishes pastry Assists in the supervision of sanitation and the products and baked desserts in a central bakery prevention of disease by installing preventive or consolidated mess. Prepares, according to standard army recipes, Instructs meat cutters by demonstration in meth rolls, buns, cakes, pies, cobblers, puddings, cookies, ods of preparing special cuts. Inventories stock and various baked goods other than bread. Selects on hand and maintains ledger of all incoming and and mixes ingredients by hand or machine in pre outgoing meat, poultry, and fish by weight and paring dough, batter, pudding fillings, or icings. type. Checks packing and tagging of items pre Proofs yeast dough. Places dough in greased pared for delivery. Supervises cleaning and pans. Turns on and regulates temperatures of maintenance of meat cutting tools and equipment electric, gasoline, coal or wood-fired ovens. Tests and meat cutting area. products during baking by touch or visual exami Must be fully acquainted with the duties of nation. Ices and decorates cakes and other pas meat cutter, grade 4, MOS 037, be able to perform tries, us.ing hand tools. Assists in taking inven the duties described above and possess the follow tory. Participates in and supervises helpers in ing special qualifications: the cleaning of utensils and equipment. Must be able to determine condition and grade Must be fully acquainted with the duties of of meat, fish, and poultry. Must be able to esti baker, grade 4, MOS 017, be able to perform the mate yield and time required to accomplish various duties described above, and possess the following meat cutting operations. Must know all phases special qualifications: and procedures of meat refrigeration and storage. Must know how to work from established rec Must possess either of the following minimum ipes and make substitution of ingredients accord physical profiles for assignment to this military ing to availability. Must know nature, charac occupational specialty under conditions indicated: teristics, and functions of pastry ingredients. Base 333221 Field 333221 Must be familiar with operation of field and fixed bakery and kitchen facilities. Must know how to Examples of duty positions for which qualified— observe sanitary and safety precautions. Must Grade depends upon number of persons super have thorough knowledge of army pastry formulas. vised, degree of skill, and technical proficiency re Must possess either of the following minimum quired, degree of responsibility, and other factors physical profiles for assignment to this military such as echelon at which position occurs. occupational specialty under conditions indicated: Master meat cutter, grades 3,2, and 1. Base 333233 Field 333233 Head butcher, grade 3. Examples of duty positions for which qualified-— Meat cutting foreman, grade 2. Assistant meat cutting plant foreman, grade 2. Pastry baker. Meat cutting plant foreman, grade 1. Pastry mixer. Pastry ovenman. OCCUPATIONAL THERAPY TECHNICIAN Pastry henchman. (1072) MASTER MEAT CUTTER (1037) Assists in the program of occupational activi ties for the treatment of patients at a medical in Grades 3, 2, and 1 stallation by giving instruction in arts and crafts, Supervises operation of a central meat cutting preparing materials for projects, constructing and plant or field butchery unit, including cutting of repairing equipment and facilities, and assisting in whole carcasses into smaller cuts, dressing poultry, the requisition and issue of occupational therapy and cleaning fish, and storage and distribution of supplies. these items. Under supervision of occupational therapist, Supervises and inspects storage and distribu instructs patients in wards and in occupational tion of meat, fish, and poultry and maintains re therapy clinic in such activities as woodworking, lated inventory and stock records. Supervises jewelry and metalwork, printing, ceramics, weav meat cutters in cutting carcasses of beef, veal, and ing, painting and sketching, leatherwork, and lamb into halves, quarters, and smaller cuts. Su other arts and crafts. Prepares projects and as pervises cutting of wholesale cuts of pork into sists patients by warping looms, cutting patterns, smaller cuts. Supervises fat rendering activities. cutting leather, cleaning printing press, mixing paints, and setting up power tools such as those and observing and recording all characteristics used in woodworking and metalwork. Adapts obtained from detailed microscopic study of the equipment to requirements of patients with physi fired bullet and cartridge case. Writes reports cal disabilities by building equipment supports; describing firearms identification or other ballistics converting bicycles and sewing machines to pro studies and summarizing their results. Presents vide power for sawing, sanding, and pottery ma technical testimony to courts martial or civilian chines; and constructing resistance and other courts when cases necessitate ballistics informa special types of equipment used to increase muscle tion. Eestores identifying numbers which have power. Enforces safety measures in use of been removed from weapons, automobiles, or equipment by inspecting power tools for proper equipment by employing various physical or functioning, observing patients at work to insure chemical processes. Maintains file of firearms that safety guards are used; that machines and identification data. tools are used only for the purpose for which de May direct the taking of X-ray photographs signed ; and that machines, tools, wires, and ropes when bullet removal is not possible. May make are placed to prevent tripping and injuries. tests to determine presence of burned or unburned Requisitions, stores, and issues equipment, tools, powder on materials or flesh of victims or suspects. and materials used in program. Polices work May assist in the identification of bombs, bomb areas. fragments, or explosive weapons in conjunction Must be capable of giving instruction in two or with bomb disposal expert. more of the arts and crafts used in the occupational Uses such equipment as comparison microscope therapy program. Must know which activities with attached camera, spectroscope, helixometer, are appropriate for treatment of various types of and calipers. patients. Must be familiar with major phases of Must know the construction and firing charac the occupational therapy program such as schedul teristics of all standard United States small arms ing patients for participation, maintenance of and of the small arms of the foreign country to equipment, and controlling requisition and use of which assigned for duty. Must be able to read equipment and supplies. and interpret manufacturers' manuals, ballistics charts, and other firearms identification data. CRIMINAL LABORATORY BALLISTICS Must have vision correctible to 20/20 (Snellen). TECHNICIAN (1160) Must have thorough knowledge of firearms identi fication such as that gained from experience in Identifies, in a criminal laboratory, bullets, the criminal laboratory of the Army, a Govern cartridge cases, firearms, and other metals by ment agency, or a State or municipal police force. means of microscope or spectroscope. Must be able to present testimony convincingly in Determines the degree of similarity between the courtroom situation. lands, grooves, spacings, manufacturers' mark ings, firing pin indentures, and other identifying SHIP BIGGER (1189) factors found on evidence bullets and cartridges, with the same identifying factors observed on bul Fabricates, installs, and repairs wire and manila lets and cartridge cases which have been test-fired rope tackle, fittings, and rigging used to support in the laboratory. Uses information contained in ship masts, spars, booms, and similar equipment, manufacturers' manuals—predetermined identifi and to operate moveable parts thereon. cation data or data determined by special re Assembles and repairs rigging. Passes whole search—to obtain identifying f actors. Determines and spliced lines through blocks and around pul the relative location of gun at the time of firing, leys. Secures rings, shackles, hooks, and other by calculating the angle of bullet trajectory on devices to wire and rope lines by splicing and the basis of known point of impact, the line of bolting. Attaches sockets to wire cable by in pentration, and the amount and kind of powder serting cable end in basket, spreading and bending used. Conducts tests to determine the identifying ends of wire strands, and pouring molten babbitt factors of unfamiliar weapons and ammunition, by about cable end. Fabricates rope hoisting slings firing such weapons under laboratory conditions and wooden and rope assemblies such as debarkation nets, Jacob's ladders, and safety nets. De ments, and reassembles unit. Inspects and classi signs and fabricates slings for use in handling fies defective equipment as economically or not cargo and rigging hoists and booms. Cuts away economically reparable. Develops original lay damaged sections of wire and manila rope lines and outs or floor plans for the installation of technical inserts new sections. Selects appropriate ma and scientific equipment so as to embody proper terials based upon type of lifts to be made, weight application of electrical, mechanical, and hydro to be handled, and functions of equipment being static principles, and to meet optional safety re worked upon. Splices in hook eyes and secures quirements for personnel, materiel, and devices. wire and rope ends against fraying. Eepairs can Supervises carpenters, plumbers, electricians, and vas items of equipment by removing worn and mechanics engaged in constructing, rebuilding, or damaged areas and fittings, cutting replacement modifying portions of medical installations con patches, and sewing new sections in place. taining medical equipment to insure proper han Installs and attaches rigging. Bolts ends of dling of apparatus, adequate consideration of mast stays to mast fittings and secures guys to safety devices and precautions, and availability of turnbuckles on deck. Assembles and hooks falls sufficient water, steam, and electrical power sup to booms, davits and lifeboats. Erects guys, top plies. Supervises carpenters, plumbers, electri and lift falls, and shrouds on booms, lifeboats, cians, machinists, painters, and operators of spe and masts to support items of equipment in place. cialized medical equipment in the performance of Installs halyards used for hoisting signals and various appropriate elements of the repair and flags. Erects and installs radio antennas. maintenance duties cited. Splices wire cable and manila rope. Bends and Must be a graduate of the Joint Army-Navy shapes lines into loops. Spreads, interweaves, and Medical Equipment Maintenance Course, or must tucks end strands of lines into main line and draws have equivalent experience or training acceptable tight. Straightens strands and finishes splices by to the Surgeon General. cutting off surplus end strands and cutting, ham (See Medical Equipment Mechanic (229) for mering, and sewing ends. Uses tools and equip minor maintenance.) ment such as fids, marlinspikes, rigger's vise, serv ing board, sockets, thimbles, shears, and needles. PHYSICAL RECONDITIONING INSTRUC Must know nomenclature of ship's rigging, TOR (1283) tackle, and lines. Must know physical properties of manila rope and wire cable. Must know meth Assists in physical reconditioning activities at ods of rigging sheaves, blocks, and pulleys. Must a medical installation in order to aid in recovery, know function and use of knots, bends, and hitches. prevent physical deterioration, and aid in psycho Must know marlinspike seamanship. logical readjustment of all classes of hospital patients. Conducts calisthenics and other physical MEDICAL EQUIPMENT REPAIRMAN activities for bed, ambulatory, and advanced re (1229) conditioning patients on prescription of medical officer. Organizes and participates with patients Overhauls and performs major repairs on medi in outdoor sports. Assists physical reconditioning cal equipment in medical units, installations, and officer in scheduling patients for participation in repair depots. reconditioning activities. Prepares notes for Uses carpenters', plumbers', electricians', and progress reports on individual patients, and keeps machinists' hand and power tools and machines records of activities of the program. Maintains to install, repair, and maintain electro-medico- physical reconditioning apparatus and equipment, dental technical and scientific equipment used by and controls its requisition and issue to patients. the Army and Navy. Examines and tests such Must have basic knowledge of anatomy, kinesi- equipment as X-ray machines, cardiographs, au ology, physiology, and pathology as applied to diometers, electro-surgical units, electronic devices, physical reconditioning activities. sinusoidal machines, and therapy units to locate College training in physical education desirable. electrical or mechanical ' defects. Dismantles Experience as a physical instructor, athletic coach, equipment, makes repairs, or necessary adjust or playground supervisor desirable. COUNTER INTELLIGENCE INVESTIGA May be assigned to assist CIC agent in field oper TOR (GIG) 1301) ations with approval of the detachment com mander. Counter Intelligence Corps Agent Must be qualified as clerk-typist by civilian occu Counter Intelligence Corps Special Agent pational experience or hold the military occupa Security Intelligence Agent tional specialty of clerk-typist (405). Security Intelligence Special Agent Must have completed the Counter Intelligence Conducts investigations of sabotage, sedition, Corps administrative course. espionage, and subversive activities in which mili Award of this MOS is contingent upon final ap tary and civilian personnel or property are proval by the Director of Intelligence, GSUSA, involved. for assignment with the Counter Intelligence Collects and safeguards evidence, questions wit Corps. nesses and arrested persons for counterintelligence information, takes fingerprints of suspects and NEUROPSYCHIATRIC TECHNICIAN from objects for use as evidence, examines perti (1409) nent records for information implementing the counterintelligence plan, prepares case reports and Performs various medical duties as a psychi summary reports concerning CIC activities, co atric attendant to assist medical officers in the operates with civilian law enforcement agencies in care and treatment of psychiatric and neuro- apprehending saboteurs, espionage agents, and psychiatric patients. subversive elements affecting military personnel Takes special precautionary measures in the or property, makes loyalty and character investi care of patients with various mental disorders to gations of civilian and military personnel for po prevent suicide, injury, or escape, using various sitions of trust, conducts security inspections in methods of protection or restraint as indicated. vital military installations and industrial plants. Assists in the administration of hydrotherapy, May investigate fires, explosions, and accidents occupational therapy, recreational and recondi for evidence of sabotage. tioning therapies, and special therapies such as In combat zones or occupied areas performs field sedation, insulin, and electroshock treatment. security missions and surveys, traces rumors and Performs general and special nursing services as propaganda sources, and assists in establishing applied to patients with various categories of security systems. mental disorders. Must have successfully completed a course of Must understand the proper approach and atti training conducted by the Counter Intelligence tude toward mental patients. Must be able to Corps. adapt general nursing techniques to psychiatric illnesses and ward environment. Must know when CLERK-TYPIST (CIC) (1405) to use various forms of restraint. Performs the duties of clerk-typist (405) in a Must have completed neuropsychiatric techni counter intelligence corps detachment. cian's course at a medical training center or have In addition, prepares operational, legal, fiscal, equivalent experience and training in the neuro and supply documents and reports peculiar to the psychiatric service of a general hospital. Counter Intelligence Corps; prepares depositions, statements, reports of interrogation, records of CRIMINAL LABORATORY CHEMICAL proceedings, background and incident reports, con ANALYST (1411) fidential fund vouchers and reports, and investi gative equipment requisitions and reports; pre Conducts chemical investigations and analyses pares other papers required in the operation of a in a criminal identification laboratory in order military investigative office; distributes classified ' to identify and determine the qualitative and correspondence, maintains classified files, and per quantitative composition of substances submitted forms other office duties in accordance with regula as evidence in criminal cases. tions governing safeguarding military informa Analyzes and identifies organic and inorganic tion. substances such as minerals, metals, poisons, narcotics, and body fluids including blood, urine, Performs periodic cleaning and inspection of semen, perspiration and saliva, by the employment antenna, receiver, transmitter, cords, plugs, and of knowledge of chemical reactions and formulae. batteries. Makes minor adjustments and replaces Makes comparisons to determine the identity or tubes, indicator lights, and batteries, and adjusts degree of similarity between substances such as frequencies. Uses simple hand tools. comparison of specimen of blood found at scene Must have thorough knowledge of radiotele of crime with sample of suspect's blood. Writes phone operating and authentication procedures. reports which describe chemical analyses per Must be capable of encoding and decoding voice formed and summary of results. Presents tech messages, using simple prearranged codes. Must nical testimony to courts martial or civilian courts be familiar with terminology, tactics, and organi when chemical analysis is used as evidence. zation of unit to which assigned, in order to be Uses all types of qualitative and quantitative able to handle messages rapidly and accurately. chemical laboratory equipment and such special (When the operation of radiotelephone equip devices as microscope, fluoroscope, and spectro ment consists of receiving or transmitting inf or- scope. •mation in connection with performance of the Must know how to perform quantative and quali duties of another military occupational specialty, tative chemical analyses. Must be able to deter the enlisted 'person will be classified in that other mine the most desirable analytical techniques to military occupational specialty.) be used in solution of problems encountered in the routine work of a criminal laboratory. Must OEDEE OF BATTLE SPECIALIST (1631) know the precaution to be taken in handling and storing items of evidence to be analyzed which Determines strength, organization, and disposi may be of minute size or subject to deterioration. tion of enemy forces to provide intelligence officers Must have the ability to present testimony ac and commanders with basis for estimating enemy curately in a courtroom situation. situation and capabilities. Compiles order of battle information. Prepares BASIC TEAINEE (1521) order of battle work sheet, unit history cards, per sonality cards, area cards, and other order of This classification will be used only to designate battle records from information processed by enlisted men who are receiving staff and adminis translators, interrogators, and interpreters such trative basic military training. (This classifica as that contained in captured enemy documents, tion will not be entered in item 27, Classification summaries of interrogation of prisoners of war in Military Specialties, on the Soldier's Qualifica and civilians, intercepted enemy broadcasts, front tion Card (DA AGO Form 20).) (See MOS 521 line intelligence reports, and reports of other in for designation of enlisted men upon completion telligence agencies. Enters on unit history cards, of basic military training.) information to establish partial or complete identi fication of enemy units, probable strength, loca EADIOTELEPHONE OPEEATOE (1599) tion, and movement of such units. Enters on personality cards, name and rank of enemy com Ship-to-Shore Telephone Operator manders and other key officers, and such addi Transmits and receives oral orders, intelligence, tional information as age, present and past assign fire-control data, fire-direction data, or other in ments, personal characteristics of observations as formation—using portable, vehicle-mounted, or to leadership ability and technical competence. permanently installed radiotelephone equipment. Enters on area cards, all available information on Selects equipment location, and sets up trans strength, disposition, and location of enemy troops mitter and receiver. 'Sends and receives messages reported or known to be operating within a geo in ordinary conversation or by means of simple graphical area. Summarizes, on order of battle oral symbols, using the phonetic alphabet. Eelays work sheet, all information bearing on enemy messages verbally or by copying them on message troop situation received during specific periods. form. Keeps message files and operating log when Determines enemy order of battle. Studies in required. formation compiled from various intelligence

8 sources, including observer's reports, captured May recommend appropriate remedial action in documents, maps, operational orders, and admin handling of individual prisoners. May supervise istrative records, to obtain and integrate data re other disciplinary guards and correctional custo garding dispositions and strength of enemy force. dial personnel. Employs material prepared by photo-interpreters Must have elementary knowledge of the Army's to establish presence, location, and identity of legal system. Must have knowledge of perform enemy units, and to correct or verify order of battle ance of duties of disciplinary guard in head counts, information from other intelligence agencies. Es • inspections, searches, detention, and prison emer timates strength of enemy on basis of captured gencies. Must have knowledge of purpose and personnel authorization tables, number of enemy aims of vocational and educational rehabilitation casualties, prisoner of war counts, captured per of general prisoners. Must be proficient in care, sonnel records, and other data which reflect varia handling, and use of weapons, such as carbine, tions between authorized and actual strength of shotgun, and submachine gun. Must be physically enemy units. Prepares periodic order of battle capable of participating in and have a knowledge information reports. of the fundamentals of judo and unarmed defense. Must have thorough knowledge of techniques of Must know the importance of, and possess poise, setting up and keeping a flexible, indexed, and good personal appearance and physical condition. cross-referenced filing system. Must know organi Must have demonstrated ability to maintain emo zation of enemy army and methods of designating tional control under stress and have no history of its units. Must know uniforms and insignia of emotional disorder or abnormal behavior. foreign armies. Must be able to estimate strength, Must have completed training in correctional disposition, and organization of foreign military and custodial methods as prescribed by The Adju forces from information which is often fragmen tant General. tary and inconsistent. Must know how to read and analyze tables of organization of enemy forces. RADIO COMMUNICATIONS Must be cleared in accordance with current De INTERCEPTOR (1799) partment of the Army directives. Operates intercept equipment to log and record DISCIPLINAKY GUARD (1677) all types of radio signal transmissions including Morse and non-Morse type codes. Employs ad Assists in the enforcement of military laws and vance information concerning schedules and tech regulations governing the conduct, employment, nical characteristics to analyze unidentified or un security, discipline, management, and vocational known types of radio transmissions. Performs and educational rehabilitation of general pris minor maintenance such as dusting and oiling in oners. tercept equipment. Enforces regulations by preventive action, ex Must be able to receive and copy International ample, persuasion, and/or coercion. Assists in Morse Code at a minimum speed of 25 random care, custody, and processing of prisoners. Pre code groups per minute. Must be cleared for cryp vents or quells uprisings and outbreaks. Investi tographic duties in accordance with Department gates suspicious incidents and unusual happen of the Army directives. ings. Presents written and oral reports on infrac tions of regulations. Observes and reports on FOOD SERVICE TECHNICIAN (1824) activities and behavior of prisoners in various situ Grades 2 and 1 ations. Stands guard at entrances and exits, in spects persons entering or leaving, and prevents Assists food service supervisor in supervision entrance or departure of unauthorized persons, ve and inspection of the storage, distribution, prepa hicles, or articles. Maintains law and order ration, and serving of food and coordinating food among general prisoners and prevents violence service activities within a command. against persons and theft or destruction of prop Inspects mess halls, kitchens, and storage rooms erty at disciplinary barracks and prisoner rehabil for efficiency of operation, in conformity with itation centers. prescribed sanitary standards, personal cleanliness 837912° of food handlers, employment of conservation required, degree of responsibility and other fac measures, and palatability and appearance of food tors, such as echelon at which position occurs. served. Checks food preparation for conformity with menus and recipes, and checks menus for nu RADIO-CONTROLLED TARGET AIR trient content and methods of substitution. In PLANE CONTROLLER (1994) spects ration distribution centers for proper stor age of perishable and nonperishable food items Controls movement of radio-controlled, pilot- and to insure equitable distribution in quantity less, target airplane from the ground during track and quality. Conducts surveys of individual food ing and target practice by use of radio remote preferences, preparation methods and conservation control, and supervises personnel assigned to unit. to improve food service activities. Audits mess Manipulates a radio-controlling device to ma accounts and reports. Reports need for corrective neuver, maintain in straight and level flight, and action when indicated. Demonstrates correct pro to land target airplanes. Uses binoculars to fol cedures in food preparation and service. low airplane beyond normal range of vision. Assists in supervision and inspection of the oper Employs knowledge of aerodynamics in operating ation of central meat cutting and fat rendering target airplane in order to avoid over-controlling, plants, bread and pastry bakeries, food storage cross-controlling and mishandling of control. plants, and food service training facilities. Con Gives general supervision to operating and ducts short instruction courses and demonstrations maintenance personnel within policy limits pro for cooks, bakers, meat cutters, and other food mulgated by officer in charge. Directs and assists handlers on new and improved methods for food in recovery of target airplanes after flight. Super preparation and food service. vises repair and maintenance of target airplanes Receives, consolidates, annotates, and prepares and related equipment such as servo unit, para for signature of food service supervisor, various chute, launching apparatus, radio receiver, and reports, surveys, correspondence, and bulletins, transmitter. Requisitions parts replacements, dealing with food service activities. Investigates supplies, and technical equipment. Supervises and reports on inferior mess units. Supervises their receipt, issue, and maintenance. Prepares clerical and administrative work of food service special and recurring reports on operations and supervisor's office. utilization of specific kinds and types of equip Must be fully acquainted with the duties of Mess ment and generally assists detachment commander Steward, Grade 3, MOS 824, be able to perform in administration of the unit. Recommends pro the duties described above and possess the follow motion, transfer, and reassignment of personnel. ing special qualifications: Assists in training launching personnel and crews Must have thorough knowledge of procurement, engaged in maintenance and operation of target storage, distribution, and serving of food. Must airplanes and related equipment. Keeps log of be familiar with operation of central meat cutting flight time of target airplanes. plants, central bread and pastry bakeries, and Must have elementary knowledge of radio. proper use and maintenance of their equipment. Must know principles of operation of combustion Must be familiar with operation of field mess facil engines. Must be thoroughly familiar with ele ities. Must have sufficient knowledge of dietetic mentary aerodynamics. Must know military sup principles to plan and review menus for nutri ply procedures and pertinent manuals and regula tional adequacy, dietary balance, and attractive tions related to operation and maintenance of ness. target airplanes. Must possess either of the following minimum physical profiles for assignment to this military MASTER BAKER (2017) occupational specialty under conditions indi cated : Grades 3, 2, and 1

Base 332221 Field 332221 Supervises preparation of bread or pastry prod Grade depends upon number of persons super ucts in a central pastry bakery, field bakery unit, vised, degree of skill and technical proficiency or garrison bakery.

10 Supervises preparation of bread or pastry prod CRIMINAL LABOEATOKY DOCUMENT ucts by bakers, pastry bakers, and apprentice bak TECHNICIAN (2301) ers. Periodically checks condition and amount of ingredients used in all baking operations. In Criminal Laboratory Handwriting Expert structs subordinates in proper baking methods and Conducts examinations in a criminal labora in corrective techniques. Supervises maintenance tory to determine the similarity of test and evi of daily ingredient consumption and production records. Supervises requisition and storage of dence documents which are either handwritten, supplies and equipment and the maintenance of handprinted, or machine-printed. supply records. Directs the cleaning of utensils, Determines similarity of evidence and tests ovens, machinery, and equipment, and storage writing materials by comparing their composi areas. Supervises installation, lay-out, and opera tion, watermarks, batch characteristics, and tear tion of a bakery unit. Makes duty assignments. ing qualities, and by comparing pencils, pens, or Enforces compliance with standard bakery pro other implements used in writing. Compares the cedures. Inspects baked products during prepara evidence document with any test items for simi tion and after completion. Inspects storage facili larity of handwritten material, including such ties, baking equipment, and personal equipment, characteristics as the arrangement of writing ma and proofs new bread and pastry formulas. terials, physical condition of the writer, attempted Must be fully acquainted with the duties of disguise, style, nationality, direction of motion, baker, grade 4, MOS 017, or pastry baker, grade pen pressure or shading, general size tendency, 4, MOS 1017, be able to perform the duties de speed, spacing, and alinement. Uses photographic scribed above, and possess the following special enlargements to make comparisons. Identifies qualifications: Must have thorough knowledge of all phases of machine-written evidence by comparison of evi baking as employed in garrison, field, and central dence with test material, ascertaining that design bakeries, including operation of mechanical equip of letters, alinement, slant, footing, defective form, ment, requisition, storage and inventory of sup touch, misalinement, wording, spelling, and spac plies, and maintenance of supply records. Must be ing are similar. Compares and identifies ma thoroughly familiar with properties of bread and terials produced by such machines as typewriters, pastry ingredients and be able to make adjustments mimeographs, engraving machines, check protec in recipes when specified ingredients are not avail tors, and multilith and multigraph machines. Ob able, or for climatic or tactical reasons. Must be tains testing materials by inducing suspects to able to estimate time factor for various baking write or prepare machine-written samples. Uses operations. such equipment as microscopes, calipers, and rulers Must possess either of the following minimum in the study and comparison of materials. physical profiles for assignment to this military Restores obliterated or hidden writing by chemi occupational specialty under conditions indicated: cal or physical means, using normal, colored, infra Base 333231 Field 333231 red or ultraviolet light transmitted obliquely or Examples of duty positions for which qualified— by reflection. Supervises the photographing of Grade depends upon number of persons super restored writing. Presents technical testimony on vised, degree of responsibility, and other factors, handwriting and documents as evidence before such as echelon at which position occurs. courts martial or civilian courts. Must be able to recognize the types of printed Master baker, grades 3,2, and 1. Bakery shift foreman, grade 3. matter produced by a large variety of printing Pastry bakery shift foreman, grade 3. machines and reproduction devices. Must be able Assistant chief baker, grade 2. to make fair and impartial judgments in compar Assistant chief pastry baker, grade 2. ing evidence documents and test items.' Must have Chief baker, grade 1. the ability to present testimony accurately in a Chief pastry baker, grade 1. courtroom situation. ELECTEOENCEPHALOGEAPHIC Surgeon General or have had equivalent training TECHNICIAN (2409) and experience. Experience or training in radio or radar main Operates and maintains a four- or six-channel tenance very desirable. electroencephalograph to obtain brain wave rec ordings for use in detecting and localizing im NUTEICULTUEE TECHNICIAN (2411) paired areas in the human cortex. Prepares apparatus for use by adjusting con Chemical Gardener nections on pre-amplifiers, power amplifier, oscil Hydroponics Technician lograph, and electrode board and cord in order to Soil-less Culture Technician minimize instrument artifacts. Questions patient Soil-less Farmer preparatory to testing, and elicits background in Eaises fresh salad type vegetables in a nutricul- formation pertinent to the classification and in ture installation at isolated military bases where terpretation of tracings. Applies electrodes to transportation or storage difficulties preclude fresh patient's scalp, places patient in comfortable posi vegetables in the diet, and where the soil or climate tion, connects electrodes according to nature of the is unsuitable for normal gardening methods. ailment, and reassures patient concerning the gen Employs one or more of the hydroponic tech eral intent and procedure. Calibrates equipment niques of water-culture, sand culture, or subirri- by testing electrode resistances to assure equality gation culture, to grow plants without use of of amplification channel output, and by recording natural soil complex. Selects a nutrient formula the amplitude of a known voltage signal wave. appropriate to the prevailing climate and to the Manipulates switches to control power amplifi mineral used as the aggregate. Weighs, mixes, cation and delineate the cortical area from which and sifts nutrient chemicals, and prepares an tracing is obtained according to whether a stand aqueous nutrient solution according to specified ard or special routine has been prescribed by the operating instructions. Maintains proper chemi electroencephalographer. Recognizes artifacts cal balance of nutrient solution. Sows seed in caused by adjacent electrical apparatus, electro propagation bed system and transplants seedlings encephalograph malfunction, or movement on part to main bed after they have properly hardened. of the patient, and annotates electroencephalo Operates power-driven pumps to irrigate growing gram accordingly. Observes patient for clinical plants with nutrient solution. Inspects plants for evidences of neuropsychiatric condition and re nutritional deficiencies. Identifies specific defect cords observations on the tracing as an aid to the by prescribed chemical tests of nutrient and plants, electroencephalographer in interpreting the read and then modifies nutrient solution accordingly. ings. Inspects plants for evidence of parasitic or virus Localizes and repairs minor operational break infection. Chemically sterilizes the aggregate and downs by substituting operable parts or units of a sprays or dusts the plants. Eliminates possible channel known to be working properly for suspec sources of plant infection from surrounding area. ted items in the malfunctioning one. Cleans and When indicated, introduces disease resistant plant sharpens pen points, refills ink wells, cleans and varieties and disease free seeds in order to control files electrodes, tightens knobs, oils paper-pulling disease and improve the crop. Prunes, ties, arti motor, and similarly performs other preventive ficially sets fruit, and similarly cares for the maturing plants according to their individual maintenance services. May manufacture own growth habits and requirements. Harvests ripe electrodes. vegetables and subsequently removes unproductive Must have a knowledge of the classification of roots from the aggregate. Maintains records nec electroencephalograms as they relate to neuropsy essary to adequate operational control, such as chiatric diseases and disorders. Must have a those relating to test results, crop yield, and ex knowledge of the psychology and behavior of penditure of supplies. Eequisitions seeds, sprays. neuropsychiatric patients. and other supplies as required. Must be graduate of a course for electro- May supervise nonspecialists including civilian encephalographic technicians prescribed by the laborers in the performance of these duties. May

12 make recommendations concerning the selection of tural parts for alinement, structural soundness, a suitable site for the nutriculture installation. water-tightness, and general condition. May furnish technical advice concerning the dura Repairs defects disclosed by test and inspec bility and toxicity of construction materials util tion. Removes assemblies, subassemblies, and ized in the hydroponics unit. parts of electrical circuits found inoperative or Equipment includes laboratory apparatus such defective. Removes major mechanical units such as scales, test tubes, burners, burettes, flasks, petri as odograph plotting units, searchlight drive as dishes, pipettes, and comparator blocks for use in semblies, lamp operating mechanisms and hand- working with standard chemical reagents and wheel cases. Disassembles units to remove and solutions. replace defective gears, bushings, shafts, clutches, Must have knowledge of elementary inorganic linkages, and other parts. Fabricates small parts and organic chemistry. Must have knowledge of using hand tools and power tools such as lathe, elementary plant physiology. Must have knowl drill press, and grinders. Completes assembly and edge of garden plant diseases and insect control. replaces unit assemblies on device. Repairs com Must have a thorough knowledge of military ponents such as electric motors, dynamotors, and nutriculture techniques. servomechanisms. Overhauls power generators. Disassembles SPECIAL ELECTRICAL DEVICE gasoline engines and inspects parts including REPAIRMAN (2635) crankshaft, bearing, camshafts, piston rods, and Performs major repairs to odographs, sniper- cylinders. Removes dirt and carbon from parts, grinds valves, and replaces defective parts, in scopes and other infrared devices, searchlights and associated remote control stations and power cluding valves, connecting rods, pistons, crank shafts and bearing inserts. Reassembles engine, plants, and other special electrical devices, exclud checking relationship of parts, assembling com ing communications equipment, in a fixed or ponents, and replacing engine accessories. Re mobile repair shop. Inspects and tests equipment such as sniper- places defective portions of control panel, wiring, scope, odograph, or searchlight to determine unit housing, chassis, and other parts. nature of trouble and extent of repairs required. Tests repaired devices. Tests individual as Examines work order or questions unit mechanic semblies in shop to determine accuracy, smooth and operating personnel to determine nature of ness of running, clarity of image, speed of re malfunction. Inspects electric power generator, sponse, and other characteristics of specific device. Fires sniperscope carbine and reexamines to de and tests compression of cylinders. Tests genera tect shifting of components. Performs opera tor windings and checks meters. Makes prelimi tional test of odograph on outdoor course and nary tests to isolate defects in various components makes corrections and adjustments required to of odograps, sniperscopes, and searchlights includ compensate odograph for characteristics of ve ing power packs, telescopes, servomechanisms, hicle on which mounted. Sets up searchlight, cables and computing mechanism. Inspects inter power plant, and control station, and connects ior of sealed circuits, opening inoperative compo cables. Operates searchlight to test arc mecha nents and breaking waterproof seals. Makes vis nism for accuracy of feed, proper focus, carbon ual inspections of electrical circuits and performs consumption rate, and arc voltage and current. electrical tests using vacuum tube voltmeter, am Checks speed and accuracy of response to control meter, cathode-ray oscilloscope, and other devices. signals from control station. Checks static and Examines and checks optical components of de dynamic error in selsyn data between dummy lo vices visually and with precision gages. Inspects cator and searchlight position. Tests power unit mechanical components of units such as odograph for output voltage, voltage regulation, and speed plotting units, searchlight control and drive units of response at arc strike. Tests readability of to detect worn, chipped, misalined, or loose gears, power plant chassis. Performs operating adjust bearings, clutches, shafts, linkages, splines, and ments or further repair to insure proper function other defects. Checks frames, chassis, and struc ing of device.

13 As grade 1, performs administrative and super and substitution by use of various radio mechanics visory duties in the management of a mobile re hand tools, specialized wrenches, and soldering pair team or repair section of fixed shop. equipment. Improvises and manufactures spare Must have knowledge of the principles of elec parts using simple machinist tools such as drill tricity, including a knowledge of the function of press, metal saws, and files. various types of electron tubes and other elements Must be able to read and interpret complicated in complex electrical circuits. Must have knowl circuit and schematic diagrams. edge of the use and capabilities of electrical test Must have a thorough knowledge of the opera ing devices used in testing complex electronic cir tion and maintenance of fixed station radio trans cuits. Must have knowledge of the principles of mitters, receivers, and associated equipment such the propagation and refraction of visible and infra as antennae, power supply, cable connections, and red light rays. Must have knowledge of the prin testing equipment. Must know the theory of ciples of operation of internal combustion engines single side band, multichannel radio transmitters, and the techniques involved in their adjustment and receivers. Must know principles of voice fre and repair. quency equipment, telephone and telegraph carrier Must be able to use small machine tools in drill and line equipment. ing, grinding, thread cutting, and stock turning operations in fabricating replacement parts. Must SECURITYMAN (2677) be able to use soldering and oxyacetylene and elec Security Escort tric arc welding equipment. Security Inspector Barricade Guard EADIO REPAIKMAN, SINGLE SIDE BAND Security Patrolman (2649) Protects vital production, storage, transporta Installs, inspects, tests, and repairs multichan tion, and research facilities against trespass and nel, single side band radioteletype equipment, in damage; guards premises, utilities, materials, and cluding receiver, transmitter, and voice frequency resources against natural hazards or activities or terminal. careless, disloyal, or subversive persons. Installs equipment in station. Inspects trans Controls the entrance of employees, visitors, and mitter, receiver, and voice frequency terminal and vehicles at strategic barricade stations to prevent makes connections between components to prepare unauthorized movement of persons or property equipment for operation. Works with telephone into restricted areas. Examines identifying num and teletype installation personnel in the estab bers or photographs on identification cards or lishment of wire circuits to the radio set. passes of all persons entering or leaving restricted Tests functioning of equipment by visual in areas. Inspects railroad cars prior to their en spection of dial and meter indicators mounted on trance into the project area, examining frame and components. Traces circuit continuity, signal trucks of the cars for concealed delayed action strength, and distortion by use of test equipment bombs and the interior of opened cars for evidence such as voltmeters, ohmmeters, relay and carrier of theft or damage. test sets, transmission and distortion measuring Safeguards the delivery of vital war materials, sets, oscillators and oscilloscopes, to diagnose and verifying the nature of the materials and the localize causes of malfunctioning. Tunes trans credentials of the bearer by comparing them with mitter and receiver channels to prescribed fre facsimile authorization documents issued and quency by adjusting mechanical operation of keys, signed by a security officer. Serves as a security contacts, relays, dial, and armature, using preci escort for persons delivering vital production ma sion measuring gages, current testing meters, and terials or classified documents, or for the vehicles, variety of hand tools such as wrenches, pliers, railway cars, or airplanes carrying such materials screwdrivers, and soldering irons. or documents. Dismantles and repairs circuit wiring, replaces Insures safety of classified information held major and minor component parts, and repairs within the project, clearing restricted areas at the parts including complete overhaul, reclamation, end of the working day, locking vacated rooms,

14 and burning all scrap paper accumulated during ures to be taken in emergencies such as wrecks, the day. transportation break-downs, floods, and fires. Safeguards persons, buildings, materials, and Must be alert and observant, able to exercise utilities against fire by enforcing compliance authority with firmness, tact, and discrimination. with fire regulations, reporting or removing fire Must possess physical strength necessary to handle hazards, alerting fire department and military recalcitrant persons without resorting to weapons. police headquarters on the discovery of fire, and Must have strong clear voice and visual acuity by taking such initial fire fighting and lif esaving correctible to 20/20 (Snellen). measures as using extinguishers, salvaging ma terials, rescuing persons, and rendering first aid. PROSTHETIC EYE TECHNICIAN (3067) Maintains constant watch over premises, ve hicles, materials, and utilities, patrolling desig Performs a variety of specialized tasks involved nated areas in radio-equipped car. Inspects rail in fabrication, assembly, and fitting of plastic eye road right-of-way on project or its environ, for prostheses, under supervision of medical officer. damage or sabotage. Takes suspected persons into Makes iris button. Selects standard iris and custody. Reports failure of such utilities as light pupil discs. Mixes proper amounts of chemical ing systems, water mains, or power lines. powder and solution to prepare acrylic compound of proper consistency. Molds and compresses In the event of emergencies such as fires, storms, compound to form acrylic disc. Assembles iris evacuations, or enemy attacks, takes charge of disc, pupil disc, and acrylic disc to form iris button, police activities, directs traffic, and takes action to using die assembly and bench and flask press. quell disorderly mobs, riots, or other disturbances. Makes plastic eye-conformer. Observes shape, Prepares narrative reports concerning nature of size, and contour of patient's eye socket and selects incidents which have required attention and of the and fits appropriate wax eye-conformer. Verifies corrective action taken. correctness of fit by touch, visual examination, Must thoroughly know modern methods of pro and patient's reaction. Makes impression of wax tecting industrial plants, storage facilities, re conformer using flask and press apparatus. Packs search laboratories, and other facilities against chemical compound into impression of wax con- trespass and damage, including those pertaining former and compresses material to form plastic to the use of weapons, handling of riots or evacua cast of impression. Bakes cast for specified in tions, fire fighting and recue work, identification, terval to form cured plastic eye-conformer. Trims and antisabotage. and polishes plastic eye-conformer using power Must be proficient in the use of 37-mm gun, .30- and hand cutting and polishing tools. Fits plastic caliber machine gun, submachine gun, pistol, car eye-conformer to patient's, eye socket to assure bine, revolver, 37-mm pyrotechnic gun, and 12- correct fit of finished plastic eye and prevent gauge shot gun. shrinkage of orbital area. Must be thoroughly conversant with the tactical Makes plastic eye. Makes wax cast of impres defense and evacuation plans for the area in which sion of wax eye-conformer and attaches iris but project is located. Must be acquainted with roads, ton. Molds impression of cast with attached iris landmarks, buildings, and other terrain features. button, removes iris button from cast and inserts Must know location of vital water, gas, and elec in impression. Packs and compresses chemical tricity control points. Must be able to read and compound into impression to form plastic eye. interpret military maps and their conventional Cures, trims, and polishes plastic eye following signs and symbols. standard procedures. Must be familiar with methods used by sabo Finishes and fits plastic eye. Mixes and blends teurs to destroy or incapacitate industrial plants, paints to match coloration of patient's normal eye. utilities, and other facilities. Must know railroad Paints iris disc and sclera, and tints plastic eye to procedures for switching or moving rolling stock, match normal eye, using artist's paint brush. railroad signal systems, possible locations about Affixes colored threads to plastic eye with metal rolling stock, tracks, or roadbeds in which explo hook and paint brush to simulate veins. Bakes sives might be located. Must know security meas and dries painted plastic eye in oven for specified

15 interval. Coats plastic eye with transparent Diagnoses, locates, and corrects mechanical mal plastic and cures by baking. Trims and polishes functions in lithographic presses, process cameras, finished plastic eye to fine.lustre. Fits and adjusts vacuum printing frames, plate graining and plate finished plastic eye to patient taking into consid coating machines, photo driers, and power cut eration such factors as patient's comfort, proper ters. Examines equipment, questions operating matching of colors, and general appearance. personnel, and makes necessary operating and run Must have thorough knowledge of properties of ning adjustments. Replaces malfunctioning or chemicals used in fabrication of plastic eyes. nonfunctioning parts, using machinists tools and Must have elementary knowledge of anatomical precision measuring devices to fabricate, modify, construction of orbital area. and fit parts when replacements are unavailable. Must have good color discrimination. Directs and supervises crew in employment of Must be able to command respect and confidence block and tackle and other rigging procedures and of patients. devices in lifting, moving, and positioning heavy map reproduction equipment. SOILS ANALYST (3160) Must have thorough knowledge of operation of all types of topographic map reproduction and Assists in performing laboratory and field test accessory equipment. ing and experimental work on soil materials in connection with military airfield, road, and gen RECRUITER (3274) eral construction. Interviews individuals to stimulate interest in Performs routine tests on soil materials. the Army as a career and secure their enlistment Assembles, maintains, and prepares equipment for in the Regular Army. soil tests, including military soil testing sets and Discusses with enlistment prospects the career field and laboratory soil testing equipment such and training opportunities afforded by the Army, as hydrometers and analytical balances. Per the promotion policy of advancement by merit, forms tests such as specific gravity determination, provisions for continuing education while in the moisture content test, mechanical sieve analysis, service, and other advantages to be gained from plasticity tests, unit-weight determination, com Army enlistment. paction-optimum moisture content determination, May assist in publicizing Army activities in California Bearing Ration Test, unconfined com connection with the recruiting' program by ad pression test, plate bearing test, and general traf- dressing fraternal organizations and other groups, ficability tests. Analyzes, for stability, soils and preparing news releases, and arranging for local aggregates which are to be used in concrete and radio broadcasts. bituminious construction. Performs tests for May administer recruiting tests and interview 'design and control of soil-cement and soil-bitumi applicants to prepare recruiting forms. nous stabilization. Observes, records, correlates, Must be familiar with the missions of all and interprets results. branches of the service. Must be familiar with Supervises soil exploration of designated areas recruiting policies, the career guidance program, in accordance with given plans and specifications. and the promotion system of the Army. Must be Performs field and laboratory identification and familiar with broad military occupational fields. classification of soils. Should be a capable public speaker. Training Must know soil mechanics. Must know con or experience in selling, public relations, or jour crete and asphalt construction. Must know nalism desirable. mathematics, including use of slide rule, pertain ing to soils testing and analysis. MICROWAVE RADIO EQUIPMENT REPAIRMAN (3649) REPRODUCTION EQUIPMENT REPAIRMAN (3167) Installs and performs major maintenance on pulse position.modulation microwave radio sets, Installs, adjusts, and repairs topographic map including transmitter, receiver, antenna, and reproduction equipment. associated equipment.

16 Installs, services, and tests equipment. Inspects nonrunning gear parts of automotive vehicles, and equipment prior to installation, for completeness repaints vehicles. ••••.-. and serviceability. Supervises nontechnical per Eepairs vehicle bodies. Inspects damaged sonnel in assembly of components and subsequent bodies or body components to determine nature erection of a metal tower antenna. Installs and and extent of repairs required. Makes visual or connects transmitter, receiver, and terminal equip manual inspection of external damage and uses ment. Instructs wire installation personnel in such tools as tram to determine body alinement. connecting wire circuits to radio equipment, and Eepairs body and fender damage using such tools assists wire personnel in testing circuit for proper as hammers, dolly blocks, spoons, power sander, functioning. Adjusts and tunes transmitter and wood and rubber mallets, and hydraulic jacks. receiver to prescribed frequencies and prescribed Straightens and restores panels, doorsj hoods, and transmission pulse positions within specified time other body sections by hammering, bending, division by use of oscilloscope and manipulation spreading, shrinking, and stretching sheet metal of switches and controls. Observes dial and meter and by use of special packs and other straightening indicators on components to test functioning of equipment. Finishes bumped out dents by filing, installed equipment and makes necessary read hammering, grinding and sanding. Fills low justments. Inspects, cleans, and lubricates com spots and dents in repaired bodies and fenders with ponents such as capacitors, resistors, potentiom solder. Uses oxyacetylene welding equipment to eters, bushings, insulators, relays, and contacts weld, braze, cut, heat, and shrink light metal com using cloth, abrasive paper, and specialized hand ponents. Installs new fenders and panels. tools. Tightens or removes and replaces body trim and Diagnoses malfunction and repairs equipment. hardware. Disassembles and inspects components and sub- Eepairs radiators and gas tanks. Inspects, assemblies to determine cause of malfunction. cleans, and repairs damaged radiators by solder Traces circuit wiring for flaws. Uses specialized ing, welding, and plugging core sections, upper hand tools, precision measuring instruments, and and lower tanks, overflow pipes, brackets, supports, general and specialized electrical and electronic and other components. Eemoves and replaces testing apparatus such as microwave power meter, radiator, units which cannot be repaired. Per variable attenuators, wave guide attenuators, oscil forms pressure tests on repaired radiators. loscopes, microwave frequency meters, dial indi Flushes out leaky fuel tanks and tests them by wet cators, and ohmmeters. Performs major or minor or air pressure method to discover leaks. Eepairs repairs, including complete overhaul and replace leaks in tanks, seams, filler neck, drain valve, and ment of parts. Manufactures simple parts using fuel line connections using caulking and soldering a variety of electricians hand tools such as solder irons. Eepairs leaky fittings, by cleaning, retin- ing equipment, knife, pliers, screwdrivers, saws, ning, and resoldering. Solders minor defects in drills, and files. fuel lines and cooling systems. Eemoves and re Must know theory and principles of repair of places fuel tanks. radio equipment. Must know pulse technique for Eepaints vehicles. Inspects vehicle .for rust microwave radio transmission and reception. spots, scratches, and cracked or peeling paint. Must have thorough knowledge of radio electronic Sands, buffs and cleans surfaces. Masks glass, fundamentals. Must be able to read and use con instrument panel, and other areas not to be tour maps and prepare contour profiles. Must painted. Mixes paints and enamels and applies have elementary knowledge of basic trigonometric them to vehicle or repaired area with pressure and algebraic formulas including logarithms. operated spray gun or brush. Must be able to read and interpret complicated cir Cuts, grinds, and installs safety glass to replace cuit and schematic diagrams. broken or defective glass. Eemoves metal chan AUTOMOBILE BODY EEPAIEMAN (4040) nels, frames, or moldings. Eemoves channel from glass. Cuts safety glass to size. Grinds Repairs and installs sheet metal components, edges on edging machine. Eounds corners and radiators, safety glass, and other nonmotive and bevels or seams edges. Seats glass in channel.

17 Installs channel and frame or molding and adjusts equipment. Subjects system to pressures greater hinges, rollers or other mechanism. than specifications. Checks connection and joints for leaks, and pressure gage readings to determine MARINE PIPE FITTEE (4162) evidence of loss of pressure. Steamfitter Must know nomenclature and function of ship's pipe systems and related equipment. Must know Lays out, fabricates, tests, and installs high physicai properties of metal pipe and tubing. and low pressure pipe systems and related valves Mugt know testing procedures applicable to high on marine equipment. and low pressure pipe systems. Must be familiar Prepares pipe system, plans fittings, and makes with structure of marine vessels. Must ^^ partial assemblies. Measures, marks, and cuts function of marille air> fuelj oil) and water pumps. pipe of prescribed specifications to required c_ The following titles and specification serial lengths. Secures pipe in vise, adjusts and sets numbers are added to section y in alphabetical pipe cutters to size, and cuts pipe around circum- order • f erence by revolving pipe cutter. Reams ends of „„,, pipe with tapered reaming tool, hand braces and AUTOMOBILE BODY KEPAIKMAN- 4040 ratchet tool holder. Threads pipe by inserting andIT.- adjusting diesT m• threading,i T tool,j ^ and^ revolv-i ing tool until required number of thrjsads are formed. Tests taper and quality of threads by COMPANY AIDMAN — _ — ______666 fitting pipe to specified fittings. Applies joining COMPANY* ADMINISTRATIVE compound to pipe and fittings and screws together CLEKK ——————————————————— 630 pipes, tees, ells, flanges, valves, and other specified COUNTERINTELLIGENCE INVESTI- fittings. Cuts gaskets of rubber, asbestos fiber, GATOR (CIC) ______1301 or other materials for insertion between pipe and CRIMINAL LABORATORY BALLIS- fittings. Bends pipe to specified shapes as indi- TICS TECHNICIAN- _ _ _ 1160 cated on blueprints, using hand tools and pipe CEIMINAL LABORATORY" CHEMI- bending machine. CAL ANALYST___.__-__._____-__-_ 1411 Repairs and services marine pipe systems. P1?TM™ A T T A "R r> T? A T O T? V -nnriT Dismantles defective pipe sections, valves, and CEI^N^4v??^ fittings and determines necessity of inserting re- MENT TECHNICIAN___..______2301 placement parts or making adjustments to elimi- DISCIPLINARY GUARD ————————— 1677 nate leaks and malfunctions. Installs replace- ELECTROENCEPHALO- ment parts in pipe sections, sanitary plumbing, GRAPHIC TECHNICIAN ——————— 2409 and related valves and fittings. Installs and at- FOOD SERVICE APPRENTICE ____ 062 taches pipe hangers, bolts, clamps and channels to FOOD SERVICE TECHNICIAN ____ 1824 secure, hang, and level lengths of pipe and fittings. MARINE PIPE FITTER ______4162 Services and adjusts valves. Insulates pipe and MASTER BAKER _____" ______2017 associated equipment. Mixes asbestos cement and MASTER MEAT CUTTER ______1037 water to proper consistency and spreads with a MEDICAL EQUIPMENT REPAIR- trowel along joints to provide air tight fit. Fits MAN ______1229 and secures prefabricated fixture coverings. MICROWAVE RADIO EQUIPMENT Applies asbestos cloth and tape to seal joints and REPAIRMAN ______3649 cracks. Wraps cellular coverings with asbestos NEUROPSYCHIATRIC TECH impregnated muslin and secures in place with NICIAN- ______1409 brass straps at measured intervals. _ NUTRICULTURE""T"E~(3HNICIAN-""-" 2411 Tests high and low pressure pipe systems. OCCUPATIONAL THERAPY TECH- Joins pipe assemblies by inserting gaskets and ArrrTATsr irV79 bolting flanges together. Blocks open ends of System With blank flanges and attaches testing 'Substitute appropriate title— Troop, Battery, Squadron.

18 SSN d. The following entries are added to appen ORDER OF .BATTLE SPECIALIST_ 1631 dix I: PASTRY BAKER ______1017 SSN deleted Suggested substitutes PERSONNEL ADMINISTRATIVE 113______. 046, 050,2.02,459. TECHNICIAN ______816 149______..859.. .-.- . PHYSICAL RECONDITIONING IN 207______. 208.. STRUCTOR______1283 262______. 055,275. PROSTHETIC EYE TECHNICIAN__ 3067 452______..409. ., RADIO COMMUNICATIONS INTER 563__—___. Specialty obsolete, no substitute. CEPTOR______1799 599______. .1599. RADIO-CONTROLLED TARGET AIR 637______. No substitute. ' PLANE CONTROLLER______1994 700- 250. RADIO REPAIRMAN, SINGLE SIDE 738. 799. BAND______2649 739- 799. 833.- RADIOTELEPHONE OPERATOR-— 1599 841_ 921- 922. RECRUITER______3274 993- 648. REPRODUCTION EQUIPMENT RE 1383 __ — __ . USAF use only. PAIRMAN ______3167 6709 709, SECURITYMAN ______2677 8709 709. SHIP RIGGER______1189 SOILS ANALYST______3160 2. Changes SPECIAL ELECTRICAL DEVICE RE a. The titles for the following specification se PAIRMAN ______2635 rial numbers are changed in sections III, IV, and STATISTICAL CLERK______212 V as indicated : SSlf From • y0 120 MEAT OR DAIRY TECHNICIAN—______MEAT AND DAIRY TECHNICIAN 290 PERSONNEL TECHNICIAN ______PERSONNEL MANAGEMENT TECH NICIAN - 799 INTERCEPT OPERATOR, FIXED STATION_ MORSE CODE ITERCEPTOR 5. Specifications for the military occupational perform the duties described above, and possess specialties listed below are changed in section IV the following special qualifications: as follows: Must know how to work from established rec BAKER (017) ipes. Must know 'nature, characteristics, and Grade 4 functions of bread ingredients. Must have thor Mixes dough and bakes bread in a garrison bak ough knowledge of army bread formulas. Must ery or field bakery unit. be able to determine whether dough is of correct Weighs and mixes ingredients and kneads, yeast content at various stages in its preparation. punches, and proofs dough. Cuts, rounds, and Must know how to observe sanitary standards and molds dough manually or by machine. Turns on safety precautions. and regulates temperature of electric, gasoline, Must possess either of the following minimum coal, or wood-fired ovens. Places molded dough physical profiles for assignment • to this military into greased pans and loads them into ovens. occupational specialty under conditions indicated: Tests bread during baking by touch and visual Base 333233 Field 333232 examination. Removes baked bread from ovens and places it on racks for cooling. Assists in tak Examples of duty positions for which qualified— ing inventory. Participates in and supervises Baker. helpers in the cleaning of utensils and equipment. Bread mixer. Must be fully acquainted with the duties of food Bread benchman. service apprentice, grade 5, MOS 062, be able to Bread ovenman.

19 MEAT CUTTER (037) Cooks food. Consults daily menu and special directions of mess steward. Cleans, cuts, scrapes, Grade 4 or otherwise prepares food for cooking or mixing. Cuts carcasses of meat in a central meat cutting Roasts, fries, boils, broils and stews meat, fish, and plant or field butchery unit, and weighs meat, fowl. Prepares vegetables, fruits, salads, pud poultry, and fish in preparation for delivery to dings, gravies, desserts, beverages, and dairy prod mess kitchens and other using agencies. ucts. Serves food to military and authorized ci Cuts whole carcasses of beef, veal, and lamb into vilian personnel. Portions food in serving line halves, quarters, and smaller cuts. Prepares when meals are served cafeteria style. Supervises roasts, steaks, chops, ground meat, and stew meat mess attendants in the preparation and serving of for cooking by cutting it from halves and quar food and in the cleaning and care of mess equip ters of beef, veal, and lamb and from commercial ment. Occasionally bakes rolls, buns, biscuits, pies, cuts of pork. Dresses poultry and cleans fish. and cakes for a unit mess when mess is not serviced Salvages bones, fat and trim in completion of cut by a central bakery. Prepares small cuts of meat ting and boning operations. Stores carcasses, from halves and quarters when mess is not serviced halves, quarters, dressed meats, poultry, and fish by a central meat cutting plant. Watches, tests, in cooling rooms. Cleans and sharpens cleavers, and seasons food while in state of preparation. cutting and boning knives, bone saws, and other Must be fully acquainted with the duties of food meat cutter's tools. Scrubs and rubs down cut service apprentice, grade 5, MOS 062, be able to ting tables and chopping blocks, and cleans meat perform the duties described above, and possess cutting area. Packs meat, poultry and fish for the following special qualifications: delivery. Must be able to prepare a wide variety of foods Must be fully acquainted with the duties of food in quantity, using standard army recipes. Must service apprentice, grade 5, MOS 062, be able to be familiar with the nutritive content of foods perform the duties described above, and possess and cooking methods required for its retention. the following special qualifications : Must be qualified to cook in field and fixed kitchens Must be able to distinguish between types of and be familiar with operation of various types of meat and to identify grades of meat and poultry. stoves, ovens, and other mess equipment. Must Must know most efficient methods of preparing know how to observe sanitary standards and safety various cuts of meat in order to reduce waste to a precautions. minimum. Must be skilled in use of meat cutting Must possess either of the following minimum tools and equipment and know how to observe san physical profiles for assignment to this military itary standards and safety precautions. Must be occupational specialty under conditions indicated: familiar with fat rendering procedures. Base 333233 Field 323222 Must possess either of the following minimum physical profiles for assignment to this military Examples of duty positions for which qualified— occupational specialty under conditions indicated : Grade depends upon number of persons super Base 333223 Field 333221 vised, degree of skill and technical proficiency re quired, and degree of responsibility. of duty positions for which qualified — Cook, grades 4 and 3. Meat cutter. Second cook, grade 4. Meat boner.. Fry cook, grade 4. Carcass breaker. Salad chef, grade 4. First cook, grade 3. COOK (060) Meat chef, grade 3. Grades 4 and 3 SOUND RECORDING TECHNICIAN (208) Prepares and serves food according to standard army recipes, and cleans and maintains mess equip Operates, adjusts, and performs organizational ment in a consolidated or unit mess. maintenance on sound-recording equipment used

20 in production of motion pictures for training, his Obtains and records soldier's personal history, torical, intelligence, or publicity purposes. education, aptitudes, interests, hobbies, civilian Installs and prepares recorder for operation. work history, and miltary experience. Periodi Loads sound film into magazine and threads film cally checks • soldier's qualification card of each over series of sprockets and rollers, centering film man in the organization to ascertain whether mil and adjusting tension. Connects microphone to tary occupational specialty and duty status are recorder, sets volume control of amplifier, and properly recorded. adjusts volume during recording operation. Moni Studies each case to determine suitable occupa tors quality of recording, using earphones, and tions either in the Army or in civilian life which makes manual adjustments to improve quality. soldier might pursue, taking into consideration Checks equipment during operation for evidence such factors as handicaps or limitations, training, of faulty operation or mechanical defect as indi experience, interest, and environmental conditions cated by excessive vibration, unusual sounds, over of assignment or employment. Administers pre heating, or poor quality recording which cannot scribed tests to assist in determining such things be corrected by operating adjustments. as capacity, emotional stability, and occupational Inspects sound-recording equipment periodi attitude, and notes interests of individuals as re cally and performs preventive maintenance. Ex vealed by such activities as hobbies, reading, and amines interior and exterior assemblies for dirt, sports. Evaluates results of tests and other data, rust, corrosion, and loose mountings and setscrews. and reviews occupational qualifications for char Cleans parts with cloth and cleaning solvent; re acteristics convertible to other military or civilian moves rust and corrosion with fine abrasives. work. Takes into consideration handicaps or lim Checks condition of insulation of wiring and plugs. itations, and makes recommendations for assign Lubricates moving parts. Adjusts and focuses ment, reassignment, or employment, or for addi exciter lamps and lenses. tional training or education, and counsels soldiers Locates malfunctions, using portable testing on occupational opportunities in civilian life and equipment such as ohmmeter, voltmeter, ammeter, in the Army. and oscillograph. Checks condition of amplifier, Must be familiar with all regulations, manuals, noise reducer, and optical system. Tests for and and procedures pertaining to Army personnel clas corrects short circuits and other electrical faults, sification and with methods of maintaining quali using electrical testing devices and electricians' fication cards of officers and enlisted men. Must hand tools. Keplaces defective mechanical and have a wide knowledge of occupations, both mili electrical parts and wiring, resoldering electrical tary and civilian, essential worker characteristics, connections. the Army career system, and opportunities for Must have knowledge of principles of electricty civilian employment. and optics as they apply to transmission, record ing, and reproduction of sound. Must be able to ATHLETIC INSTKUCTOK (283) read electrical wiring diagrams and to use color codes to identify electrical circuits. Must have Conducts a comprehensive program of planned normal hearing in order to be able to monitor athletic activities for the physical conditioning sound recording. Must have normal color per and recreation of military personnel. ception. Conducts group calesthenics and .supervises a variety of gymnasium sports and periodic physical CLASSIFICATION SPECIALIST (275) fitness tests used to evaluate effectiveness of ath Interviews enlisted men to obtain educational letic program and check individual progress. and occupational history and other related infor Schedules competitive outdoor sports. Lays out mation for the purpose of classifying and assign and marks playing fields. Instructs in rules and ing military personnel or to aid soldiers who are playing methods of various sports and functions about to be discharged in finding proper employ as umpire or referee. Assists in coaching athletic ment or in obtaining additional education or teams. Stores and issues athletic equipment and training. supplies, and keeps supply records.

21 College training in physical education desirable. blank from metal block when polishing is com Experience as a physical instructor, athletic coach, pleted. or playground supervisor desirable. Cuts, edges, and mounts lenses. Examines work order indicating facial measurements of patient CEIMINAL INVESTIGATOE (CTD) (301) to determine over-all specifications of frames. De termines optical center of lens, using a lensometer. Criminal Investigations Agent Cuts ground and polishes eyeglass lenses to size Conducts investigations of crimes in which mili of frames, using automatic cutting machine to con tary personnel or property are involved. trol dimensions of cut and chips off excess with Collects and safeguards evidence, apprehends pliers. Grinds edge of lens blank by hand or ma and arrests military personnel and civilians sub chine to fit frames, and mounts lenses in frames. ject to the articles of war, questions witnesses and Checks position of lenses in frames and observes suspected or arrested military personnel, procures fit of bows and position' of bridge and its pads for and compiles criminal evidence against individu conformance to specifications. Bends frame with als, takes fingerprints from objects for use as evi pliers to make necessary adjustments. Checks lens dence, examines pertinent records, and prepares for conformance to specifications using lensometer. case reports and summary reports; cooperates with Makes minor repair to eyeglass frames, using a civilian police and other law enforcement agencies variety of small hand tools. Makes minor re in apprehending criminals and solving crimes pairs and hones or sharpens lens cutting, grinding, against the Government; investigates fires, explo and polishing tools. sions, accidents and other events to determine Must know how to read eyeglass prescriptions. criminal liability; distributes information to ap Must know how to determine lens specifications, propriate commanding officers concerning crimes using broken lenses as guide. Must know how to committed by personnel or their command. operate a variety of machines used for making and May take photographs of objects, places, and fitting eyeglass lenses. Must know how to use individuals and recover lost, stolen, or abandoned calipers and read micrometers to determine con property. formance of lenses to specifications during grind May investigate crimes involving civilians in ing and polishing operations. combat zones, occupied countries, or other areas under martial law. SUPPLY NONCOMMISSIONED OFFICEK (821) OPTICIAN (365) Makes eyeglass lenses to individual prescrip Supply Technician tion and assembles lenses in frames. Supervises and assists subordinates in all activi Grinds and polishes lenses. Examines prescrip ties connected with the requisition, receipt, trans tion or determines lens specifications with special portation, storage, and issue of individual and or optical instruments. Selects standard strength ganizational supplies and equipment. lens blanks with focus nearest to that of prescrip Estimates stock requirements and prepares and. tion. Lays out blank to mark correction desired, edits requisitions and purchase orders. Supervises using opticians protractor. Affixes lens blank on loading, unloading, and storage of organizational metal block, using pitch for holding lens during supplies and equipment. Checks supplies re grinding and polishing operations. Selects lap to ceived, issued, or shipped and is responsible for the conform to curve of lens desired, and grinds sur preparation of over, short, and damaged reports. faces of blank to specified ciirvature and thickness, Issues clothing, arms, ammunition, fuel, personal using a hand or machine operated bench grinding equipment, and general unit supplies. Prepares machine. Selects lens polishing tool whose diop shipping tickets, memorandum receipts, statement tric scale corresponds to prescription and mounts of charges, receiving reports, exchange orders, and it in machine. Positions block on which lens is reports of survey. Maintains record of all supplies mounted against polishing tool, and starts ma and equipment held in stock and by unit personnel. chine to polish lens to prescription. Removes Takes inventories and makes physical inspections.

22 Supervises maintenance and repair of unit prop tube collar sleeves and automatic feed plungers. erty and keeps equipment in readiness for field Adjusts vital parts of carriage, such as equilibra- service. Supervises the collection and distribution tor, axle balancing mechanism, and electric brakes. of laundry. Cleans and lubricates or packs bearing surfaces Takes measurements of individuals to ascertain and revolving parts, including hubs, wheel bear proper size, and fits garments, shoes, and other ings, jack handles, ball bearings, trunnion bear items of indivdual clothing. Determines modifi ings, and elevating and traversing gears. Adds cations from standard patterns, and alterations recoil fluid and gas as needed. Performs other necessary to obtain correct fit. Evaluates cost of organizational and authorized field repair and necessary alterations as compared to orignal cost maintenance. of garment to aid in determining need for special Supervises and instructs operating crews in care measurement clothing. Advises and instructs and maintenance of weapons. troops on use, application, and care of general Must have thorough knowledge of mechanical purpose, functional, and special purpose clothing. functioning of antiaircraft automatic weapons and May supervise personnel in connection with re be capable of rapidly servicing weapons under field ceipt, storage, and issue of supplies at a supply conditions. dump. May inspect items turned in for replace ment and salvage or repair. May procure sub ARTILLERY MECHANIC, ANTIAIRCRAFT sistence items from the quartermaster or from (GUN) (834) local sources. Performs organizational and authorized field Must be familiar with Army Regulations gov maintenance and repair of 90-mm and 120-mm erning accountabilty, responsibilty, and supply antiaircraft guns, carriages, and auxiliary equip procedure, including action to be taken in the ment, and single or multiple .50-caliber machine event of loss or damage to Government property. guns. Must be familiar with tables of organization and Inspects, cleans, and makes field repairs on weap equipment, tables of basic allowances, and stand ons. Disassembles, inspects, and cleans major ard nomenclature lists applicable to his unit. parts of gun such as breech mechanism, firing For assignment to quartermaster supply depot mechanism, firing pin assembly, and fuze setter, of similar unit, must have a working knowledge of using a wide variety of tools such as monkey and be able to supervise procurement, receipt, wrenches, screw drivers, pliers, socket wrenches, warehousing, issue, and salvage of quartermaster and wrenches, punches, mechanic's and bronze supplies. Must be familiar with nomenclature hammers, and chisels. Drains and refills recoil and classification of quartermaster supplies. cylinders as required. Replaces defective or worn- out parts such as extractors, set screws, and cotter ARTILLERY MECHANIC, ANTIAIRCRAFT keys. Cleans and lubricates bearing surfaces and (AUTOMATIC WEAPONS) (833) revolving parts, including hubs, wheel bearings, Performs organizational and authorized field jack handles, ball bearings, trunnion bearings, and maintenance and repair of 37-mm or 40-mm anti elevating and traversing gears. Performs other aircraft guns, carriages, and auxiliary equipment, organizational and authorized field repair or and single or multiple .50 caliber machine guns. maintenance. Inspects, cleans, and makes field repairs on weap Supervises and instructs operating crews in ons. Disassembles major parts of weapon such proper care and maintenance of guns. Must have as recoil assembly, breech block mechanism, bar thorough knowledge of mechanical functioning of rel assembly, and automatic loader, using a wide antiaircraft guns and be capable of rapidly serv variety of tools such as monkey wrenches, screw icing guns under field conditions. drivers, pliers, socket wrenches, and wrenches, RADAR MECHANIC, IFF (862) punches, mechanic's and bronze hammers, chisels, and automatic loader tools. Inspects and cleans Tests, adjusts, maintains and performs second working parts. Replaces defective or worn parts, echelon maintenance on all IFF radar equipment. such as set screws, bolts, cotter keys, flash hiders, Must be able to perform the duties described

23 above and possess the following special quali SOLDIER (521) fications : Must know circuits and construction of IFF This classification will be used to designate en radar equipment. Must know use of testing and listed men in the following categories: measuring apparatus associated with IFF radar (1) Personnel who have completed staff and equipment. Must have completed prescribed ra administrative basic military training dar mechanics course at an Army school or have but have not yet acquired an MOS. equivalent experience. (2) Personnel who have proved unqualified G. Specifications and titles for the military occu in an MOS previously held and are in the pational specialties listed below are changed in process of acquiring another specialty section IV as follows: (see par. 56, sec. I, as changed by C 1).

MEDICAL EQUIPMENT MECHANIC (229) MESS STEWARD (824) Performs minor organizational maintenance on Grades 3, 2, and 1 medical department equipment in medical installa tions and units. Supervises or assists in supervision of a consoli Uses electricians' and mechanics' hand tools to dated or unit mess. repair technical equipment such as X-ray units, Authenticates and receipts for daily issue of ra physiotherapy machines, basal metabolism appa tions to mess. Inspects rations for adequate qual ratus and centrifuges, and such nontechnical appa ity and correct quantity. Supervises temporary ratus as toasters, fruit juice extractors, and refrig storage and utilization of rations by cooks. erators. Examines and tests equipment to locate Supervises preparation and serving of food. Establishes operating and work procedures for minor electrical or mechanical defects. Localizes ' cooks, food service apprentices, and other kitchen and corrects operational breakdowns arising from personnel. Adapts daily menu to minor local vari every day usage by substituting operable parts or ations in accordance with daily situation. Pre units for malfunctioning ones. Replaces frayed pares cook's work sheet. Supervises and inspects wiring, burned-out fuses, and worn or damaged food in preparation in accordance with sanitary plugs or switches on electrical apparatus Tightens and dietetic principles and established army reci and adjusts nuts, bolts, and screws on sterilizers, pes. Instructs cooks in kinds and amounts of food lamps, fans, instrument cabinets, and similar appa to prepare for standard and nonroutine occasions. ratus. Lubricates motors, bearings, and other Demonstrates use of field and garrison equipment moving parts. Eeplaces defective heating ele for kitchen utilization. Establishes a system of ments in sterilizers, bacteriological incubators, serving soups,, meats, vegetables, salads, desserts, toasters, and other related types of equipment. beverages, and other food items in accordance Repairs damaged or worn drainage lines on dental with principles of sanitation, palatability, appear equipment. Adds fluid to hydraulic lifts as neces ance, and correct temperature. Establishes, and sary. Assembles and installs medical equipment posts to keep current, mess accounts and records. when simple or nontechnical methods will suffice. Gathers information for and completes special reports and surveys. Supervises serving of food Maintains adequate supply of standard parts for to authorized personnel, and collects a stated equipment worked upon. May refinish surfaces amount of money from personnel not regularly and perform general carpentry repairs on hospital authorized to eat in a mess. Studies bulletins, furniture. technical manuals, and other printed material in Must be graduate of a course for medical equip volving new and changed procedures for mess ment maintenance personnel prescribed by the operation. Discusses and advises mess officer or Surgeon General or have had equivalent training food service supervisor on unit's food service or experience. problems. (See Medical Equipment Repairman (1229) for Inspects kitchen, dining hall, mess personnel, major repair.) and other mess facilities. Inspects storage for

24 excess quantity and poor quality. Inspects quan EADIO-CONTKOLLED TARGET AIR tity and system of disposal of waste. Inspects PLANE MECHANIC (994) serving line to determine value, local preferences in food items, adequacy of quantity, and quality Installs equipment and performs operational of food as it is received. Inspects food as it is pre maintenance, exclusive of radio, on radio-con pared and cooked for conformity with established trolled target airplanes. standards and inspection sheets. Inspects cooks Assembles target airplane and installs engine and other mess personnel for sanitary precautions, and related components such as fuel system, pres general efficiency, and work techniques. Varies sure tube, wiring, and propellers. Balances target work procedures and takes remedial action to cor airplane to provide for use of fuel load in flight. rect deficiencies noted. Makes preoperational inspection by checking en Plans food service part of special unit events gine accessories, landing gear, wings and struts, and festivities. Secures and assigns additional fuselage, parachute hatch and release mechanism, personnel to accomplish special functions. Super radio receiver and servo unit for proper installa vises preparation and serving of food for special tion, safety precautions and general condition. events. Sets up and assembles launching catapult. As assistant mess steward controls and manages Services and repairs target airplane and cata a shift of mess operating personnel. pult. Replaces torn fabric, using canvas and dope, Must be fully acquainted with the duties of sewing large, irregular tears when required. Cook, Grade 4, MOS 060, be able to perform the Smooths nicks and chips in propeller to prevent duties described above, and possess the following cracking. Straightens and replaces bent tubing. special qualifications: Prepares damaged fuselage, catapult, and other Must be able to instruct in methods of prepar metal parts for welding. Performs maintenance ing and cooking food in quantity. Must be of power plant to correct malfunctions such as familiar with dietetic principles of nutritional defective ignition and weak batteries or coils. Re adequacy, dietary balance, and attractiveness. moves and replaces defective parts and such assem Must know procedures of ration, requisitioning, blies as hubs, gear case, cylinder, timer, check, and and storage. Must be able to set up and operate relief valves, carbureter, crankshaft, and crank- field kitchens and field kitchen equipment. case. Maintains servo unit in good running order Must possess either of the following minimum by cleaning dust from limit switches and gear physical profiles for assignment to this military occupational specialty under conditions indicated: trains and by oiling pivots and bearings. Returns servo unit to higher echelon when major malfunc Base 333221 Field 333221 tion develops. Relieves tension of power shock Examples of duty positions for which, qualified— and snubber shock cords when catapult is not in Grade depends upon number of persons super use. Lubricates equipment according to applica vised, degree of skill and technical proficiency re ble lubrication orders. Dismantles target airplane quired, degree of responsibility, and other factors for extended periods of storage or for shipment. such as echelon at which position occurs. Shelters airplane when not in use to prevent Mess steward, grades 2 and 1. deterioration. Assistant mess steward, grade 3. Assists in recovery of crashed target airplanes and in storage of technical equipment and sup INTERCEPT EQUIPMENT REPAIRMAN plies. Inspects parachutes for damage such as (868) frayed lines, rips, oil, and dampness. Performs field echelon maintenance on inter In grades 6 and 5, makes dope and fabric re cept equipment including electromechanical and pairs and performs other work as directed by more electronic cryptographic devices. experienced specialists. Must be cleared for cryptographic duties in In grades 4 and 3, performs maintenance on accordance with current Department of the Army servo units and engines. directives. In grade 2, serves as launcher chief and super-

25 vises recovery of target airplanes and maintenance technical manuals and other instructions concern of airplanes and all equipment. Supervises work ing maintenance of target airplanes. of target airplane radio mechanics, welders, and d. The titles for the following specification parachute packers. serial numbers are changed in sections III and V Must know technical orders, lubrication orders, as indicated: 8SN From To 229 MEDICAL EQUIPMENT MAINTENANCE MEDICAL EQUIPMENT MECHANIC TECHNICIAN. 521 BASIC—______-______SOLDIER 824 MESS SERGEANT ______MESS STEWARD 868 RADIO-TELETYPE MECHANIC______INTERCEPT EQUIPMENT REPAIR- - • MAN 994 SERVO MECHANIC, PQ TARGET AIRPLANE- RADIO-CONTROLLED TARGET AIRPLANE MECHANIC

e. Alternate titles in the specifications for the SSN military occupational specialties listed below are 738 INTERCEPT OPERATOR-G changed in section IV as follows: 739 INTERCEPT OPERATOR-J 84i ARTILLERY MECHANIC, ANTIAIR (1) PLUMBER (164). Delete alternate CRAFT (SELF-PROPELLED) titles "Pipe Fitter, Railway" and "Steam- MINOR MAINTENANCE fitter". Add the words "Construction 921 HEIGHT FINDER REPAIRMAN and Utilities" after alternate title "Pipe 993 RADIO MECHANIC, PQ, TARGET Fitter". AIRPLANE (2) SHEET METAL WORKER (201). 1383 AIRCRAFT CRASH RESCUEMAN Delete alternate titles "Automobile Body 6709 TRAFFIC ANALYST-G Repairman" and "Automobile Radiator 8709 TRAFFIC ANALYST-J Repairman". &. Deletions are made in specifications in sec 3. Deletions tion IV as follows: (1) PHYSICS LABORATORY ASSIST a. The following specification serial numbers ANT (160). Delete "Soils Technician" and titles are deleted from sections III and IV, from alternate titles. Delete "soils" from and the specifications for military occupational last line of 2d paragraph. Delete 6th specialties for these specification serial numbers paragraph in its entirety. are deleted from section IV: (2) LITHOGRAPHIC PRESSMAN (167). SSN Delete the alternate title and the last two 113 WOODWORKING MACHINE OPERA paragraphs. TOR G. The following titles and specification serial 149 PHARMACIST numbers are deleted from section V: 207 SOUND RECORDING EQUIPMENT MAINTENANCE MAN SSN 262 OCCUPATIONAL COUNSELOR AIRCRAFT CRASH RESCUEMAN__ 1383 452 OPTOMETRIST ARTILLERY MECHANIC, ANTIAIR 563 HORSE ARTILLERY DRIVER CRAFT (SELF-PROPELLED) MI 599 RADIOTELEPHONE OPERATOR, NOR MAINTENANCE______841 FIRE CONTROL HEIGHT FINDER REPAIRMAN___ 921 637 INFORMATION CENTER EQUIP HORSE ARTILLERY DRIVER____ 563 MENT TECHNICIAN INFORMATION CENTER EQUIP 700 VETERINARY AMBULANCE OR MENT TECHNICIAN______637 DERLY INTERCEPT OPERATOR-G______738

26 SSN SSN INTERCEPT OPERATOR-J______739 SOUND RECORDING EQUIPMENT OCCUPATIONAL COUNSELOR____ 262 MAINTENANCE MAN______207 OPTOMETRIST______452 TRAFFIC ANALYST-G______6709 PHARMACIST______149 TRAFFIC ANALYST-J______8709 RADIO MECHANIC, PQ, TARGET VETERINARY AMBULANCE OR- AIRPLANE ______993 DERLY ______700 RADIOTELEPHONE OPERATOR, WOODWORKING MACHINE OPER- FIRE CONTROL______599 ATOR______113 [AG 300.7 (22Sep48)] BT ORDER OF THE ACTING SECRETARY OF THE ARMY .'

OFFICIAL: OMAR N. BRADLEY EDWARD F. WTTSELL Chief of Staff, United States Army Major General The Adjutant General

DISTRIBUTION : Army: Tech Sv (2) : Arm & Sv Bd (1) ; AFF (10); OS Maj Comd (10); Base Comd (5); MDW (2) ; A (ZI) (18), (Overseas) (3) ; CHQ (2) ; D (25); B (3) ; R (4); SBn (3) ; Bn (1); C (1) ; FC (1); USMA (2) ; Sch (10); PMS & T (1); GH (25); SPECIAL DISTRIBUTION. Air Force: USAF (10) ; USAF Maj Comd (25); USAF Sub Comd (25); Class HI Instls (1). For explanation of distribution formula, see SR 310-90-1.

27 TM 12-427 C5 TECHNICAL MANUAL MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL CHANGES DEPARTMENT OF THE ARMY No. 5 WASHINGTON 25, D. C., £6 July 1949 TM 12-427,12 July 1944, is changed as follows: in the classification of positions in tables of organ 1. Additions ization and equipment and tables of distribution are contained in other appropriate Department'of a. The following is added to paragraph 2c, the Army publications. Prefix digits to designate section I: additional qualifications or status are authorized The basic specification serial number always will as follows: consist of four digits. Conversion to the new four- digit system in this technical manual will be ac (1) Instructor qualifications will be identi complished by prefacing all currently authorized fied by the prefix digit "8." three-digit SSN's with the digit "0." A currently (2) Parachutist qualifications will be identi authorized four-digit SSN will remain unchanged. fied by the prefix digit "7." Examples: Clerk - Typist, SSN 405, will be (3) Duty with civilian components will be changed to Clerk-Typist, SSN 0405; Cook, SSN identified by the prefix digit "6." 060, will be changed to Cook, SSN 0060; and Food (4) Duty with the recruiting service will1 be Service Technician, SSN 1824, will remain un identified by the prefix digit "5." changed. 2. Changes 5. Paragraph 2<2, section I, is added as follows: d. The prefix digit is a number prefaced to the The specification serial number for the follow specification serial number which serves to iden ing military occupational specialty is changed in tify positions in tables of organization and equip sections III, IV, and V, as indicated: ment and in tables of distribution which call for From To the services of enlisted individuals who possess SSN SSN certain abilities in addition to being fully qualified in a military occupational specialty, and also 3167 REPRODUCTION EQUIPMENT serves to identify the personnel who are qualified REPAIRMAN 0101 to occupy these positions. Instructions concerning 3. Deletions the use of prefix digits in individual classifica Delete entire paragraph 16 from section I. (Re tion and in reporting primary or potential pri fer to par. 31, SR 615-25-1, as changed, for in mary military occupational specialty are con structions concerning the classification of in tained in paragraph 31, SR 615-25-1, as changed, structors, parachutists, and personnel on duty with and instructions concerning the use of prefix digits certain exempted activities.) [AG 300.7 (16 Dec 48)]

BY OEDEK OF THE SECRETARY OF THE ARMY I

OFFICIAL : OMAR N. BRADLEY EDWARD F. WITSELL Chief of Staff, United States Army Major General The Adjutant General

DISTRIBUTION : Tech Sv (2); Arm & Sv Bd (1) ; AFF (10); OS Maj Comd (10) ; Base Comd (5); MDW (2) • A (ZI) (18), Oversaw (3); CHQ (2); D (25); B (3); R (4) ; SBn (3); Bn (1); C'(l) 5 FC (1) ; Sch (10); PMS & T (1); GH (25); SPECIAL DISTRIBUTION. For explanation of. distribution formula, see SR 310-90-1. AGO 179A—July 851701°—19 ». ,. QOVERHMEM PH.NT.KG OFF.CJ. !»• Contents

Tapn. Fort-word...... IV SECTION 1. introduction to Military Occupational Classification of Enlisted Personnel...... 1 II. Functional Grouping of Military Occupational Specialties...... 9 III. Numerical List of Military Occupational Specialties...... 16 IV. Specifications for Military Occupational Specialties ...... 21 V. Alphabetical Index of Military Occupational Speciall ies ...... 129 APPEADIN I. Conversion of Deleted Specification Serial Numbers...... 145 II. Army Specialized Training Codes...... '...... 163

This manual together n-illi TM 72-426 (inhrn published) tupersede.t AK 615-26, 15 September 1942, including C I, 30 January 1943 and C 2, 32 April 1943; Memorandum WG15-2H-63, 11 March IBM; Memorandum W615-W-43, 11 April 19li3; Memorandum U©ul5-ft5-©i3, 13 May 1Sti3; Memorandum W615-60-43, 17 July 1943; Memorandum IV6/5-S3-43, 2/i August 1U3; Memorandum tt©KI5-6!>-n3, 26 August 1943; WSt5-M, 2-2 March 19M; AG teller ?0/.6'(/S Oct ti3)OC-A-K7.-Mtt-A. 1 November 1943; section I. Circiilur No. 43. War Department, I9©i3; and paragraph 3, Circular No. 141, \\ar Department, 1944.

HI FOREWORD

This manual contains specification serial num bers, titles, and specifications for all enlisted per sonnel military occupational specialties currently classified.

IV Section I Introduction to Military Occupational Classification of Enlisted Personnel

Paragraph Pag« Purpose ...... "...... ;. 1 1 Definition of a Military Occupational Specialty (MOS)...... 2 1 Relationship of an MOS to Tables of Organization...... 3 .2 Relationship of an MOS to tlie Arms and Services...... 4 2 Determination of Soldier's Military Occupational Specialty (MOS) ...... 5 2 Recording MOS on Soldier's Qualification Card, WD., A.G.O. Form 20...... 6 2 Qualification in an MOS...... 7 3 Selection of Main and Secondary MOS...... 8 3 Organization and Interpretation of Jo!> Speciticaticms...... 9 3 Use of Alternate or Common Job Titles...... 10 4 Specification Serial Number (SSN), Deletions and C.lumjifs. • ...... 11 5 Use of Alphabetical Index...... 12 5 Development of Functional Fields...... 13 5 Use of this Technical Manual...... 14 5 Suggested Changes, Corrections, Revisions, and Deletions ot Military Occupational Specialties...... 15 7 Coding of Parachutists, Horsemen, and Instructors...... 16 8 Abbreviations used in this Manual...... 17 8

1. PURPOSE. 2. DEFINITION OF A MILITARY OCCUPA This manual provides a means of classifying en TIONAL SPECIALTY (MOS). listed military occupational specialists. In addition a. In determining an MOS the general principle to this manual, classification and assignment mate followed throughout is that duty assignments which rial appearing herein and affecting the AAF has basically involve the same kind of training, expe been extracted and published in AAF Manual 35—1, rience, techniques, abilities, and the same relative Military Personnel Classification and Duty Assign degree of physical capacity on the part of a soldier ment. Reference to that manual should be made are classified together under a broad MOS. A duty in connection with Army Air Forces classification assignment which is so specialized as to prevent and assignment procedures. Proper classification of grouping is recognized as an individual MOS. Ex enlisted men will facilitate the— amples, the job description of a Clerk-Typist (SSN a. Conservation of available skills through maxi 405) represents a broad classification and such mum utilization of physical capacity, leadership duty assignments as Company Clerk, Typist, and qualities, experience, education, training, skills, and Chaplain's Assistant fall within the area of skills aptitudes. which the MOS of Clerk-Typist represents. How h. Construction and development of Tables of ever, the job description of-an Orthopedic Mechanic Organization and other personnel manning tables (SSN 366) represents a specialized duty assign with respect to the kinds of military occupational ment not susceptible to grouping and is an MOS specialists needed by a unit to perform its mission. in itself. c. Requisition and assignment of enlisted men b. An MOS, therefore, is the term used to iden qualified to meet the requirements of a military tify an Army job which comprises one or more assignment. related duties and responsibilities normally requir d. Selection of enlisted personnel for retraining ing special knowledge and skills acquired through or vocational rehabilitation in preparation for con tinuation of service in the Army or for return to civilian training and experience supplemented by gainful civilian employment. military training and experience, or military train e. Separation of individuals from military serv ing and experience only. ice and rational demobilization to achieve fullest c. The specification serial number (SSN) is a utilization of military occupational training and numerical code assigned to an MOS for control, experience upon return to civilian life. reporting, and requisitioning purposes. MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

3. RELATIONSHIP OF AN MOS TO TA in connection with further determinations of this BLES OF ORGANIZATION. nature. Tables of Organization and Equipment and other 5. DETERMINATION OF SOLDIER'S MILI Tables of Distribution may list any of the duty titles TARY OCCUPATIONAL SPECIALTY common to an MOS. Example, such duty assign (MOS). ments as Company Clerk, Typist, and Chaplain's a. An MOS will be assigned an enlisted man only Assistant can be performed by one qualified in the as follows: MOS of Clerk-Typist (SSN 405). Any or all of the. above titles may appear in Tables of Organization. (1) Through the successful completion of a course In each case, however, the SSN listed would be 405 of training at a training center or service since this is the numerical code which controls the school, if it has been determined by proper authorized duty titles representing assignments authority that the course qualifies a graduate which fall within the area of skills represented by in a specialty. Determination by proper au the MOS of Clerk-Typist. thority shall include clearance of military training programs with The Adjutant Gen 4. RELATIONSHIP OF A MILITARY OCCU- eral's office (Classification and Replacement PATIONAL SPECIALTY TO THE ARMS Branch) for determination of the appropriate AND .SERVICES. MOS to be assigned to graduates of various courses. a. In many cases the same MOS is required by more than one arm or service and it is customary (2) Through satisfactory performance of the duties for the arms and services involved to train and de and responsibilities of a military occupational velop the required specialist, through school or unit specialty in a unit or installation for a period training or both, usually for assignment within their of 60 days. respective organizations. The same training, tech (3) Through civilian experience, when of such na niques, and abilities and the same kind of work are ture as to be a practical counterpart of an MOS required of the specialist, basically, regardless of and when proficiency has been demonstrated the arm or service in which he is developed. How to the satisfaction of his commanding officer. ever, because of differences in equipment, tactics, b. Any soldier not qualifying in an MOS in ac -operations, physical capacities, etc., which exist in cordance with the above shall be classified as Basic the various arms and services, it is indicated that an (SSN 521) until such time as he qualifies for an MOS should always be associated with the arm or appropriate MOS. service which developed it. In other words, the iden tity of the arm or service which develops an MOS 6. RECORDING MOS ON SOLDIER'S QUAL is an integral part of that MOS and should be rec IFICATION CARD, W.D., A.G.O. FORM ognized as such. NO. 20. b. The above factors should be considered in all The MOS and SSN of the soldier will be recorded placement and replacement matters. For example, under the item "Classification in Military Special a Field Artillery trained Tank Mechanic, Minor ties," on the Soldier's Qualification Card, W.D., Maintenance (SSN 660) should be assigned to a A.G.O. Form No. 20. The item, "Record of Current Field Artillery unit whereas an Armored Command Service," in the column marked "Principal Duty" trained Tank Mechanic, JMinor Maintenance should will always show the authorized duty title and SSN be assigned to an Armored unit. However, where which represents the current duty assignment of exigencies of the situation make this impracticable the soldier. Entries in the "Principal Duty" column every attempt will be made to assign specialists to are subject to change as the soldier is given different closely allied assignments in the order of their duty assignments which fall within the area of skills relationship to one another. Example, where a Field represented by his MOS. Artillery trained Tank Mechanic, Minor Mainte Example: In the case of the MOS of Clerk-Typist (SSN 405), the item "Classification in Military nance (SSN 660) is required and is not available, Specialties" will list Clerk-Typist—405. If the sol the same kind of specialist who is either Tank De dier's principal duty assignment is Clerk-Typist the stroyer or Armored Command trained should be same entry will be recorded in the "Principal Duty" assigned because the same kind of work is required column, thus, Clerk-Typist—405. In the event the of these specialists, basically. The differences which soldier is subsequently assigned the duty of Chap exist as to type of equipment, tactics, etc., of an lain's Assistant, such additional entry will be re organization can be absorbed by the specialist. Sec corded in the "Principal Duty" column, thus, Chap tions II and IV of this manual should be studied lain's Assistant—405. In this case, the item "Classi- 12 Apr 45 TM 12-427 C 1

5. DETERMINATION OF SOLDIER'S No other titles are authorized for this entry. (See MILITARY OCCUPATIONAL SPECIALTY par. 55, TM 12-425.) (MOS). b. Under the item, "Record of Current Service," in the column marked "Principal Duty" record the a. An MOS will be assigned enlisted personnel duty title and SSN which represents the current only as follows: duty assignment of the soldier. For this entry, it (1) Through the successful completion of a is permissible to use, in abbreviated form, any of course of training at a training center or service the alternate titles appearing at the head of the school, if it has been determined by proper authority specification in this manual or other titles in com that die course qualifies a graduate in a specialty. mon usage (par. 10). Entries in the "Principal Whenever it is determined that a training course Duty" column are subject to change as the soldier is qualifies an individual for a military occupational given different duty assignments which fall within specialty The Adjutant General (Classification and the area of skills represented by his MOS. (See Replacement Branch) will be furnished information par. 57, TM 12-425.) as to the nature of the course and the MOS code c. When an enlisted man performs a duty assign designated. ment not within the area of skills represented by his (2) Through demonstrated ability to perform previously acquired specialties the appropriate SSN satisfactorily duties and responsibilities of an MOS and duty title will be entered in the "Principal in a unit or installation. Normally, a period of not Duty" column as indicated above but this SSN will less than 30 days shall be considered a minimum not be entered under item "Classification in Mili requirement. tary Specialties" until the enlisted man has demon (3) Through civilian experience, when of such strated his qualifications in accordance with para graph 5. nature as to be a practical counterpart of an MOS d. Example of the use of title and SSN for re and when proficiency has been demonstrated to the cording MOS and principal duty: In the case of the satisfaction of his commanding officer. MOS of Clerk-Typist (SSN 405), the item "Classi b. Enlisted personnel not qualifying in an MOS fication in Military Specialties" will list Clerk- in accordance with a above will be classified as Typist as 405. If the soldier's principal duty as follows: signment is Clerk-Typist the same entry will be re (1) Enlisted personnel not previously qualified in corded in the "Principal Duty" column, thus, Clerk- an MOS, or determined to be disqualified in a pre Typist 405. In the event the soldier is subsequently viously acquired MOS, will be classified as Basic assigned the duty of Chaplain's Assistant, entry will (SSN 521) until qualified in accordance with a be made in the "Principal Duty" column, thus, above. Chaplain's Assistant 405. In this case, the item (2) Enlisted personnel not qualified for training "Classification in Military Specialties" will remain in an MOS and others who fail to absorb specialist posted as Clerk-Typist (SSN 405) since the duty or tactical training will be classified as Duty Soldier assignment of Chaplain's Assistant falls within the II (SSN 188) or Duty Soldier III (SSN 590) de area of skills represented by the MOS of Clerk- pending on mental and physical capacity to per Typist. form the non-specialized duties indicated in the e. Wherever a military occupational specialty job specifications contained in section IV. title is followed by "designated type" or "designated equipment" or other similar phrase in parentheses, 6. RECORDING MOS AND PRINCIPAL an appropriate descriptive phrase indicating the DUTY ON SOLDIER'S QUALIFICATION distinguishing characteristics of the job will be CARD, WD AGO FORM 20. substituted therefor and shown in parentheses, for example, "302 Machine Operator (Engine Lathe)" a. The main title and SSN of the MOS acquired or "302 Machine Operator (Drill Press)" and "659 by a soldier in accordance with paragraph 5 will be Instructor (Mathematics) " or "659 Instructor (Jap entered, chronologically as acquired, under the anese) ." In each instance where such a paren item ''Classification in Military Specialties." Under thetical statement appears after tha MOS title, the this item only the main title of the MOS, as it ap words "designated type" or similar phrase will not pears in section II of this manual, will be entered. be recorded as part of the title.

AGO 174 A 2A INTRODUCTION

fication in Military Specialties" will remain posted analysis of military duties performed by enlisted as Clerk-Typist (SSN 405) since the duty'assign personnel, male and female. Material used in their ment of Chaplain's Assistant falls within the area preparation was obtained from tables of organiza of skills represented by the MOS of Clerk-Typist. tion and current Army publications supplemented by field investigations o\ Army units in which the 7. QUALIFICATION IN AN MOS. specialties were found. Accurate classification of each soldier in an appro b. Organization of a Job Specification. Each priate MOS is of utmost importance. No soldier job specification contained in this manual is com should be classified in an MOS unless he is able posed of several or all of the following elements: to perform satisfactorily the duties and responsibili (1) A descriptive title consistent with other titles ties required by the job in accordance with the and a specification serial number. standards set out below and qualification in an (2) Alternate titles. Where a military occupational MOS will be accomplished as follows: specialty is known by another title established a. "Skilled" if the enlisted man has demonstrated by common practice or usage, and where the that, given the tools and equipment of his occupa tion he can perform all of his duties under sus type of training and experience available to an enlisted man qualifies him to perform more tained field, combat, or operating conditions with than one set of duties included under the MOS, out supervision beyond that inherent in the job titles alternate to the main titles are indicated, itself. and the same SSN assigned. b. "Semiskilled," if he can perform his duties (3) A statement of predominant duties and respon under similar conditions but requires supervision. sibilities including typical tasks falling within c. "Potential" if he has sufficient familiarity with the occupational specialty. The general prin his tools and equipment and has such aptitudes and ciple followed throughout is that jobs which physical qualities as clearly warrants the assump require the same kind of training and experi tion that he will become qualified as semiskilled ence usually available" to enlisted men have or skilled with additional training and experience. been classified together under the one military Such men should be able to perform the various occupational specialty. elements of the job under close supervision. (4) A statement of special qualifications indicat 8. SELECTION OF MAIN AND SECONDARY ing knowledge and skills required for adequate MOS. performance of the specialty. a. Enlisted men may acquire sufficient knowledge' (5) Suggested substitutes indicative of related and skills to warrant classification in more than military occupational specialties from which one military occupational specialty. In order to personnel may be drawn in emergencies which provide for the maximum utilization of a soldier's will permit assignment with the least training qualifications the following factors should be con and preparation. sidered in the selection of the main and secon (6) It will be noted that the job specifications ordi dary specialty, when it is desired to make a dif narily make no mention of the education and ferentiation : experience, military or civilian, required. How (1) Quality of performance. ever, it should be understood that all military (2) Length of experience or training. occupational specialties are acquired through (3) Recency of experience or training. some form of Army service school training (4) Needs of the service, especially in scarce cate supplemented by on the job training or through gories of required skills. on the job training only. b. An enlisted man may acquire a new MOS in c. Interpretation of Job Specifications. accordance with paragraph 5a (1), (2) or (3). (1) The job specifications are intended as an aid Until a new MOS is determined he shall be classi and guide in assisting classification officers in fied under his present Military Occupational Spe the determination of an appropriate code des cialty, except in cases where he is not qualified to ignation for a given set of duties and respon perform the duties and responsibilities thereof. In sibilities, and uniformly to interpret and im such cases he will be classified in accordance with plement the regulations pertaining to person paragraph 5b. nel classification and reporting. They do not restrict authority of commanding officers to 9. ORGANIZATION AND INTERPRETA change or prescribe additional duties and re TION OF JOB SPECIFICATIONS. sponsibilities of subordinates. The objective a. Basis for job specification. The specifica has been to develop clear, usable, and man tions contained in this manual are based upon an ageable specifications rather than make each MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

one an indivisible unit. Differences in duties established by the enlisted grade to which he is which do not affect seriously their treatment promoted. His MOS remains the same. as a unit in classification and assignment work Example: An Antitank Gun Crewman (SSN have been disregarded. The specifications are 610) who, because of evidenced leadership not detailed arid complete statements of the and other personal supervisory qualifications, duties and responsibilities of a specific duty is promoted to the position of Antitank Non assignment but describe typical tasks normally commissioned Officer. In this case, the MOS associated with the functional specialty. Antitank Gun Crewman (SSN 610) is not (2) The classification of occupational specialties changed excepting that the alternate title of does not produce a system whereby every duty Antitank NCO (SSN 610) should be used and assignment can be found through a routine accordingly posted in the item, ''Record of process of following an index. Sound judg Current Service" in the "Principal Duty" col ment is required in applying the mechanical umn of the Soldier's Qualification Card, W.D., details of this classification structure. Consid A.G.O. Form No. 20. The enlisted grade to eration is not to be given to isolated phrases which the soldier is promoted in this case es or sentences apart from their context. tablishes the supervisory nature of his as signment. (3) Authorized alternate titles as indicated in the job specification may be used on T/0's and (2) In those cases where a soldier on a supervisory manning tables to designate type of duty per level is responsible for supervising a com formed. posite group of specialties on the operational level and who, in order properly to supervise 10. USE OF ALTERNATE OR COMMON the group, must have a thorough knowledge JOB TITLES. of the varicXus kinds of military occupational specialists ov.^r which he has supervision, the The proper construction and development of Ta enlisted grade to which he is promoted is not bles of Organization, common usage in the field, considered an adequate classification. By virtue the type of training and experience available to of the knowledge the soldier develops of more the soldier in the field, and tradition of an arm than one MOS he automatically acquires a new or service may indicate a title other than the official MOS in this type of case. Example, the MOS or main title of an MOS. Provision for such varia tion in title is arranged for as follows: of Administrative NCO (SSN 502) represents the kind of supervisory specialist who must be a. Wherever an MOS represents that type of spe thoroughly familiar with more than one MOS cialty which qualifies a specialist to perform one on the operational level and such a specialist or more duties and responsibilities falling within does not logically develop from only one MOS the area of skills represented by the MOS, job as in the case of the Antitank NCO. titles alternate to the main title are shown to indicate c. Other common title's which are used through the most probable duties to which a specialist may out the Army to indicate the supervisory nature of be assigned. Examples-of this are the use of such the duty assignment may also be used as alternate titles as Company Clerk, Battery Clerk, Headquar titles. Examples of this are Sergeant Major, First ters Clerk, Chaplain's Assistant, or Typist with the Sergeant, Platoon Sergeant, Chief of Section, Sec- MOS of Clerk-Typist (SSN 405), and, in an Anti lion Leader, and Squad Leader. However, the SSN tank unit, Cannoneer, Gunner, Driver, Radio used in each case will be that SSN which repre Tender, or Antitank NCO with the MOS of Anti sents the MOS of the Sergeant Major, First Ser tank Gun Crewman (SSN 610). geant, Platoon Sergeant, etc. b. The general principle followed in consider Examples: A Platoon Sergeant of a Rifle Com ing common titles which are used throughout the pany should be shown, as Platoon Sergeant, SSN Army to indicate the supervisory nature of the duty 745, if he is assigned to a Rifle Platoon or 1812 if as assignment has been to determine whether or not signed to an Infantry Platoon employing 60-mm a soldier on a supervisory level is responsible for mortars and light machine guns; a Platoon Sergeant the supervision of a composite group of specialists of an Antitank Company should be shown as on the operational level. Platoon Sergeant SSN 610; a First Sergeant whose (1) In those cases where a soldier on a supervisory duties require that he be an administrative special- level requires no more basic knowledge than .ist should be shown as First Sergeant, SSN 502; tb-'.t of his military occupational specialty, and a First Sergeant whose duties require a tactical plus his established leadership and other per specialist should be shown with the SSN covering sonal qualifications, his supervisory status is his tactical specialty. For example, the First Ser- INTRODUCTION geant of .an Infantry Rifle Company should be They are the only titles which will be used in shown as First Sergeant, SSN 1812. The First completing the item "Classification in Mili Sergeant of a Tank Destroyer Company (Firing) tary Specialties" on the Soldier's Qualifica should be shown as First Sergeant, SSN 610. tion Card, W.D., A.G.O. Form No. 20, and other allied reports and forms, such as requi 11. SPECIFICATION SERIAL NUMBER sitions, service records, and orders. (SSN) DELETIONS AND CHANGES. (2) Alternate Titles. These are descriptive titles a. General. Appendix I contains a listing of listed in lower case letters with initial capitals. specification serial numbers (SSN) appearing in These titles are authorized duty titles which AR 615—26 and its supplements which— represent duty assignments which fall within (1) Have been deleted from this manual or the area of skills represented by the military (2) Have been retained in this manual because occupational specialties (principal titles) to they are required in certain Tables of Organ which they refer. Their formal use is author ization but are convertible to more appropri ized only in Tables of Organization and in ate SSN's in other Tables of Organization. completion of the item "Record of Current b. ' Appendix I, Table I. This table numer Service" on the Soldier's Qualification Card, ically lists all specification serial numbers (SSN) W.D., A.G.O. Form No. 20. falling within the scope outlined in a(l) and (2) (3) Cross-index Titles. The cross-index titles, above, as follows: also listed in lower case letters with initial (1) Where a deleted SSN is convertible to only capitals, are rearrangements of principal and one SSN, the SSN to which it is convertible alternate titles and provide for easy location is included in this table. of military occupational specialties when the (2) Where an SSN has been deleted and is con exact principal or alternate titles are not vertible to more than one SSN or has been known. retained but falls within the scope outlined b. A title cannot be completely descriptive of in a (2) above, reference is made to and con a specialty. It is important, therefore, that refer version is listed in appendix I, table II, except ence be made to the content of the specification be ing where otherwise indicated. fore a specification serial number and title are se c. Appendix I, Table II. This table 'contains a lected. list of Tables of Organization by Arm and Service, by T/0 number, showing the SSN's deleted or 13. DEVELOPMENT OF FUNCTIONAL changed, together with the appropriate SSN's to FIELDS. be used in the respective T/0's. Section II gives a grouping of military special Example: Platoon Sergeant (SSN 651) has been ists within ten broad functional fields. The pur deleted by SSN only._ Where this SSN (651) ap pose of this section is to indicate the, functional pears in appendix I, table I, there is included a fields and the appropriate specialists therein in reference as follows: "See Appendix I, Table II." order to assure using, requisitioning, or assigning Before reference is made to table II first determine occupational specialists for purposes in agreement the particular T/0 involved, then turn to the ap with the skills and knowledges of a particular MOS. propriate arm or service in table II and locate the appropriate T/0 number listed therein. The proper 14. USE OF THIS TECHNICAL MANUAL. SSN to be used will be listed by T/0 line and column number. If the pertinent T/0 is not listed a. General. The use of this Technical Manual in table II, no correction is necessary as the T/0 by the Army will .be, in general, to accomplish the is correct. Table II does not include classified purpose stated in paragraph 1. Specific applica T/0's. Corrections involving classified T/0's will tions will vary in accordance with the missions of be processed by other methods as will be prescribed the using units or organizations, and such War De from time to time. partment publications as may direct changes or modifications. 12. USE OF ALPHABETICAL INDEX. b. Reception Centers. The civilian occupa a. The index (section V) contains a complete tions of enlisted men will be classified in accordance cross-index of the military occupational specialties with TM 12-^26. The recommended military assign included in this manual. It contains— ment made on the W.D., A.G.O. Form No. 20 Card (1) Principal Titles. These are descriptive by reception centers will be based on— titles listed in capital letters and are the exact (1) A sound evaluation of such factors as physical designations found in sections III and IV. capacity, leadership, experience, education, MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

skills (hobby or occupational), test scores, tial," "semiskilled" or "skilled" will be shown and aptitudes which indicate probable suc by the initials "RTC" for replacement train cessful performance of a military occupational ing center and "SS" for service school in the specialty. appropriate space. (2) The needs of the Army for certain military d. Field Units. Divisions and separate units occupational specialists as shown by such War will make use of this manual properly to assign Department publications as Requirement and replacements to duties commensurate with their Replacement Rates, lists of critical shortages, qualifications as indicated either by the recom and other similar publications. mended military assignment by reception centers (3) The types and kinds of training programs or the designated MOS of men received from re available to enlisted men within replacement placement training centers, service schools or other training centers, service schools or units. units. Men received from reception centers will ac (4) Reception centers will not recommend a mili quire an MOS in a unit in accordance with para tary occupational specialty on a supervisory graph 5a(2) or (3). Enlisted men given a quali level. If a soldier possesses the potentialities fied MOS from a replacement training center or of a military occupational specialty on the service school as indicated by the initials RTC or supervisory level he should be recommended SS under the item "Classification in Military Spe for a military occupational specialty on the cialties" will be given an MOS as soon as they dem operational level. In filling blanket requisi onstrate satisfactory performance of the duties and tions for units, the rate for military occupa responsibilities of such MOS. Such notation will tional specialties on the supervisory level be made in the item "Classification in Military (when shown) should be added to that of the Specialties" of the card by crossing out the initials military occupational specialties on the ap RTC or SS and adding the new date. These nota propriate operational level. tions will be initialled by the responsible officer. c. Training Centers and Service Schools. Classification officers and unit personnel officers in The use of this Technical Manual by Training Cen divisions and separate units will assign military ters and Service Schools will include: occupational specialties to enlisted men only in (1) Re-evaluation of the qualifications of enlisted accordance with paragraphs 2 and 5. men for the purpose of assigning each soldier e. Replacement Depots and Personnel Re to that type of training which he can most placement and Reassignment Centers. Replace readily absorb and thereby be of the greatest ment depots and personnel replacement and reas value to the service. Consideration should be signment centers will make full use of this man given to the physical capacity, leadership ual— qualities, and intelligence incident to the MOS (1) To determine that the enlisted man has been for which the particular course is intended to properly classified in an MOS in accordance train and the SSN under which the enlisted with paragraphs 2 and 5. man will be reported as available for assign (2) To assign such men out as replacements only ment. (See par. 5a(l).) on requisitions for such specialists. (2) Enlisted men upon successful completion of a (3) Where exigencies of the situation make it im course will be properly classified with an, practicable to assign men in accordance with MOS in accordance with paragraph 5a(l) their specialties, every attempt will be made and such War Department publications as Cir to assign specialists'to closely allied assign cular No. 233, War Department, 1943, "En ments which can be determined by a study of listed Men—Requisitions for Replacements sections II and IV of this manual. Most de Trained by Army Ground- Forces," as amended scriptions list appropriate substitute military by section III, Circular No. 331, War Depart occupational specialties, and substitute assign ment, 1943, and Circular No. 189, War De ments should be based on these suggestions partment, 1944, "Requisitions for Replace wherever possible. ments of Enlisted Men Trained by Army f. Tables of Organization and Tables of Service Forces," or similar publications. This Organization and Equipment. Tables of Organ entry shall be made on the Form No. 20 Card ization and other personnel manning tables should under the item "Classification in Military Spe indicate the kinds of military occupational special cialties" by showing the official title of the MOS ists needed by the T/0 unit to perform its mission. under the heading "Designation" and the SSN Appropriate use of alternate titles will indicate the under the heading "Specification Serial Num probable use or duty assignment of such specialists ber." The degree of proficiency under "poten within T/0's. Section II has been constructed to INTRODUCTION clarify the types and kinds of military occupational Subject: Suggested Changes in Military Occupa specialists in accordance with the mission they will tional Specialties (TM 12-427). Be required to perform. Enlisted Man's Military Occupational Specialty 15. SUGGESTED CHANGES, CORREC 1. Title. TIONS, REVISIONS, AND DELETIONS 2. Arm or service.' OF MILITARY OCCUPATIONAL SPE 3. Indicate T/0 number and title or manning table, CIALTIES. and state briefly mission of unit. a. In order to maintain this manual, additions, 4. Type of supervision governing specialty: changes, corrections, revisions, and deletions will a. Commissioned Officer (Title and Code Num be required from time to time. The cooperation ber in accordance with TM 12^106 or 407). of classification, requirement, and training officers b. Noncommissioned Officer (Title and SSN in is essential in keeping subject matter in this manual accordance with this manual). current with new developments. In order to insure 5. Supervisory responsibilities of specialty: careful consideration of changes, the following a. Over other noncommissioned officers (give procedure will be followed: Title and SSN). (1) Before formally requesting the inclusion of a b. Over nongraded enlisted men (give Title and new military occupational specialty in this SSN). manual, the principle outlined in paragraphs 6. Job Analysis of Military Occupational Specialty 2a ajid b will be carefully studied. showing— (2) After such study, a review of the military oc a. Duties performed (state in detail, explaining cupational specialties in this manual will, in specifically what, how, when, and why, and many instances, indicate one or more special the tactics, weapons, tools, equipment, and ties which adequately represent the kind of materiel involved). ' specialist required. Where this is the case a b. Job knowledge and skill required (state in de new MOS should not be requested. Rather, tail the techniques, abilities, dexterity, ac the MOS most closely representing the kind of curacy, (speed, tolerances) special training, specialist required should be selected and a and other characteristics required). review made of the main and alternate titles, c.'Training.required. Indicate whether obtained if any, of the MOS. If an appropriate title is by RTC or school training, unit training or indicated no further action on request is nec both. Indicate whether this specialist is essary and the MOS should be used by selected trained specifically as an individual military title and the SSN governing the MOS. specialty. (3) However, where the MOS adequately repre d. Responsibility involved, supervisory and non- sents the kind of specialist required, but no supervisory: appropriate title is indicated, a request to The (1) Indicate number of workers and type of Adjutant General, Classification and Replace work supervised together with the na ment Branch, Washington 25, D. C., through ture and extent of supervision given. channels, should be made stating the sug (2) Under nonsupervisory responsibilities gested alternate title required and the MOS show the nature and extent of coopera and SSN to which it is considered alternate. tion required and indicate possible (4) From time to time military occupational spe damage or loss either to enlisted men cialties become obsolete for various reasons or of materiel. and, therefore, should Ke deleted from the man e. Relations to other military occupational spe ual. Once it has been determined that an MOS cialties : is no longer necessary notification through the (1) List other military occupational special channels outlined in part 3 of this paragraph ists with whom this specialist works in a should be accomplished. section or unit in order to perform the (5) In those cases where the procedure outlined mission of the organizational unit. in (1) and (2) above does not provide a solu (2) Indicate the military occupational special tion to the situation a request for change ties from which this specialty is usually should be prepared in the following manner: developed and into which specialties To: The Adjutant General, Classification and one may be promoted, and state sub Replacement Branch, Washington 25, stantial differences in skills, experience, D. C. (Through Channels) training, etc. MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

7. Physical Requirements (indicate physical charac entered in parenthesis in the items "Classification teristics necessary to successful performance in Military Specialties'' and "Present Duty" to of this MOS. State in detail unusual physical gether with the military occupational specialty title. requirements or to what extent less physically However, in the rare cases where personnel are per qualified personnel could perform duties in manently assigned to instructional duty, and are not qualified in a military occupational specialty volved ). related to the course of instruction, the use of 16. CODING OF PARACHUTISTS, HORSE- Technical Instructor (SSN 659) is authorized if MEN, AND INSTRUCTORS. the instructor is highly skilled or Basic (SSN 521) a. Parachutists and Horsemen. The terms if the instructor has no military occupational spe "Parachutist" and "Horseman" do not represent cialty. military occupational specialties. Rather, they rep 17. ABBREVIATIONS USED IN THIS MAN resent additional qualifications required of para UAL. troopers and horsemen whose military occupational AA...... Antiaircraft specialties vary in accordance with the kinds of MOS's required to man Tables of Organization ca.ll- AAA...... Antiaircraft Artillery AACS...... ing for the additional qualifications of parachut . .Army Airways Communications System ing and horsemanship. However, in order ade AAF...... r. .. Army Air Forces quately to control the requisitioning of and other AGD...... Adjutant General's Department wise to indicate the parachute or horseman qualifi Armd Cmd...... Armored Command cations the digit 7 will prefix the basic specifica tion serial number of Paratroopers in all cases and CAC...... Coast Artillery Corps Cav...... Cavalry the digit 9 will prefix the basic specification serial number of Horsemen. CE...... Corps of Engineers CMP...... Corps of Military Police Examples: To identify a Rifleman (SSN 745) CNS...... Control Net System who is additionally qualified as a Paratrooper the COS... v ... Civilian Occupational Specialist basic SSN will be prefixed thus, 7745. To identify DO...... Depot Overhaul a Rifleman (SSN 745) who is additionally qualified FA...... Field Artillery as a Horseman the basic SSN will be prefixed thus, FD....:...... Finance Department 9745. Inf...... Infantry b. Instructors. It is not feasible to develop MCO...... Main Civilian Occupation job specifications for the many instructional duties MD...... Medical Department performed by enlisted personnel. A careful analy MOS...... Military Occupational Specialty sis of instructor specialties has shown that the field NCO.-...... Noncommissioned Officer of instruction, both in kind and scope, usually Ord Dept...... Ordnance Department parallels the functional performance of a military PMG...... Provost Marshal General occupational specialty and, hence, can be repre QMC...... Quartermaster Corps sented by the same SSN. Sig C...... Signal Corps Example: The skills and knowledge represented SP...... Self-propelled by a Rifleman (SSN 745) and ah instructor in the SSN...... Specification Serial Number same field are sufficiently alike, except for person TC...... Transportation Corps ality and other factors not classifiable herein, to TD. ^...... Tank Destroyer permit classification by the same SSN. For re VHF...... Very High Frequency cording purposes the word "Instructor" will be VLA...... Very Low Altitude 30 Jun 45 TM 12-427 C 2 Section II Functional Grouping of Military Occupational Specialties To facilitate the allocation and location of ap 724 Range Section Operator, Coast Ar propriate MOS's in this manual, the military occu tillery. pational specialties have been grouped under ten 802 Artillery Mechanic, Minor Mainte broad functional fields which, in turn, have been nance. subdivided into subgroups of related occupations. 836 Sound Recorder, Field Artillery. No single criterion has been followed in assigning a 844. Gun Crewman, Light Artillery. job to a particular grouping. Generally, the func 845 Gun Crewman, Heavy Artillery (Mul tional relationship among the specialties has been tiple Load). the determining factor in their grouping. In some 864 Gun Crewman, Medium Artillery. cases, consideration has been given to other factors, 873 Gun Crewmanj Heavy Artillery (Single such as the qualification requirements, T/0 needs, Load). and the mission to be performed, necessitating a de 1531 Gun Crewman, Pack Artillery. parture, in such instances, from the functional ar c. Antiaircraft Artillery (including organiza rangement. Where this has been necessary, how tional maintenance). ever, such grouping should prove of greater benefit 527 Antiaircraft Range Section NCO. to the user. The ten groupings are as follows: 597 Antiaircraft Artillery Machine Gun Crewman, SP. 598 Antiaircraft Artillery NCO, SP Weap 1. Gunnery and Gunnery Control. ons. a. Light and Heavy Weapons (including or 601 Antiaircraft Artillery Automatic Weap ganizational maintenance), ons Crewman. 511 Armorer. 633 Fire Control Electrician, Antiaircraft 604 Light Machine Gunner. (Automatic Weapons). 605 Heavy Machine Gunner. 634 Fire Control Electrician, Antiaircraft 607 Light Mortar Crewman. (Gun). ' 745 Rifleman. 635 Searchlight Electrician. 746 Auton:,jtic Rifleman. 692 Height Finder Observer. 812 Heavy Weapons Crewman. 763 Searchlight Crewman. 1607 Heavy Mortar Crewman. 833 Artillery Mechanic, Antiaircraft (Au 1812 Light Weapons NCO. tomatic Weapons) Minor Mainten 9745 Cavalry Trooper. ance. b. Field and Coast Artillery (including organ 834 Artillery Mechanic, Antiaircraft (Gun) izational maintenance). Minor Maintenance. 571 Electrician, Harbor Defense. 841 Artillery Mechanic, Antiaircraft (Self- 572 Seacoast Gun Data Computer. (Des propelled) Minor Maintenance. ignated Type). 946 Searchlight NCO. 576 Flash Ranging Observer. 1645 Range Section Operator, Antiaircraft. 578 Observation Station Operator, Coast 2601 Antiaircraft Artillery Gun Crewman. Artillery. 3601 Antiaircraft Artillery Automatic Weap 586 Sound Ranging Observer. ons Crewman, SP. 596 Rocket Crewman. d. Tank and Antitank (including organiza 599 Operator Radiotelephone, Fire Control. tional maintenance). 608 Gun Crewman, Coast Artillery. 610 Antitank Gun Crewman. 645 Fire Direction Center Operator. 660 Tank Mechanic, Minor Maintenance.

AGO 283 A TM 12-4-27 30 Jan 45 C 2

1736 Light Tank Crewman. 669 Military Policeman, Occupied Terri 2736 Medium Tank Crewman. tory. 3736 Amphibian Tank Crewman. 677 Military Policeman. e. Air Crew. 968 Mine Detector Operator. 509 Bombardier.' €. Gas and Chemical. 731 Smoke Generator Operator. 580 Remote Control Turret Mechanic-Gun 786 Toxic Gas Handler. ner. 809 Decontaminating Equipment Operator. 611 Aerial Gunner. 870 Chemical NCO. 612 Airplane Armorer-Gunner. 979 Chemical Warfare Man, General. 737 Flight Engineer. 8. Communications. 748 Flight Maintenance Gunner. a. Message Center. 757 Radio Operator-Mechanic-Gunner, 542 Communications Chief. AAF. 560 Pigeoneer. 770 Airplane Pilot. 667 Message Center Clerk. 772 Liaison Pilot. 674 Message Center Chief. 773 Service Pilot. 765 Visual Signalman. 939 Aerial Photographer-Gunner. 805 Cryptographic Technician. 940 Aerial Photographer. 807 Crytographic Code Compiler. 1684 Airplane Power Plant Mechanic-Gun 808 Cryptanalysis Technician. ner. b. Telephone and Telegraph. 1685 Airplane Electrical Mechanic-Gunner. 039 Cable Splicer, Telephone and Tele 2750 Aerial Engineer. graph. 2756 Radio Operator and Mechanic, AAF. 095 Central Office, Technician. 2 Intelligence, Reconnaissance, and Security, 097 Installer-Repairman, Telephone and a. Reconnaissance. Telegraph. 733 Reconnaissance Car Crewman. 115 Automatic Telephone System Mainte 761 Scout. nance Man. b. Intelligence and Operations. 187 Repeaterman, Telephone. 552 Control Tower Operator. 197 Submarine Cable Station Technician. 561 Aircraft Approach Controller, GCA, 209 Submarine Cable Station Operator. 631 Intelligence NCO. 236 Telegraph Operator. 670 Master Gunner, Coast Artillery. 237 Teletype Operator. 671 Master Gunner, Antiaircraft (Gun). 238 Lineman, Telephone and Telegraph. 768 Intercept Control Technician. 239 Teletype Mechanic. 791 Air Operations Specialist. 261 Wire Chief, Telephone and Telegraph. 814 Operations NCO. 309 Telephone Operator. 832 Master Gunner, Antiaircraft. 384 Installer, Toll Telephone and Tele 890 Photo Interpreter. graph. c. Radio Intelligence. 637 Information Center Equipment Tech 538 Voice Interceptor (Designated Lan nician. guage). 641 Field Lineman. 543 Radio Intelligence Control Chief. 646 Telephone and Telegraph Equipment 709 Traffic Analyst (Radio). Repairman. 738 Intercept Operator, G. 650 Telephone Switchboard Operator. 739 Intercept Operator, J. 801 Cryptographic Repairman (Desig 6709 Traffic Analyst, G. nated Equipment). 8709 Traffic Analyst, J. 893 Facsimile Operator. d. Security. 894 Facsimile Technician. 301 Investigator. 950 Wire Repairman, VHF. 510 Information Center Operator. c. Radio and Radar Operation. 518 Ground Aircraft Observer. 514 Radar Crewman (Designated Set). 526 Balloon Crewman. 740 Radio Operator, Intermediate Speed.

10 AGO 2S3A 30 Jun 45 TM 12-427 C 2

756 Radio Operator, AAF. 866 Radar Observer, Sea Search. 759 Radio Operator, CNS. 869 DF Evaluator. 760 Radio Operator, AACS. 1766 Radio Operator, AN/MRQ (Desig 766 Radio Operator, High Speed, Manual. nated Model). 776 Radio Operator, Low Speed. 3766 Radio Operator, Marine. 777 Radio Operator, High Speed, Auto 4. Transportation. matic. a. Motor Transportation (including organiza 798 Transmitter Attendant, Fixed Station. tional maintenance). 799 Intercept Operator, Fixed Station. 014 Automotive Mechanic (Second Eche 842 Radar Operator, AN/TPQ (Designated lon). Model). 316 Automobile Serviceman. 843 Radar Operator, AN/TPT (Designated 345 Truck Driver, Light. Model).

AGO 283A 10A FUNCTIONAL GROUPING OF MILITARY OCCUPATIONAL SPECIALTIES

378 Motorcyclist. 825 Medical Supply NCO. 735 Full-Track Driver. 826 AAF Supply Technician. 931 Truck Driver, Heavy. 835 Supply Clerk. 932 Special Vehicle Operator. 847 Prosthetic Dental Supply Clerk. 6. Animal Transportation (including organiza 848 Parts Clerk, Armament. tional care}. 901 Munitions Worker. 093 Horsebreaker. 949 Ammunition Renovator. 094 Horseshoer. b. Food-Service, Pure/losing and Supply. 235 Teamster. 017 Baker. 563 Horse Artillery Driver. 037 Meat Cutter. 565 Pack Driver. 060 Cook. 710 Stable Sergeant. 371 Purchasing Agent. 712 Packer, Animal. 819 Commissary Steward. 713 Packmaster. 820 Subsistence NCO. c. Railway Transportation. 824 Mess Sergeant. 033 Brakeman, Railway. c. Cargo Handling (including organizational 047 Traffic Man, Railway. maintenance). 058 Conductor. Railway. 246 Cargo Gear Mechanic. 069 Dispatcher, Railway. 271 Longshoreman. 110 Locomotive Engineer. 470 Cargo Checker. 111 Locomotive Fireman. 473 Winch Operator. 185 Railway Signal Operator. 6. Maintenance. 265 Yardrnaster. a. Armament Repair. d. Water Transportation (including organiza 903 Small Arms Weapons Mechanic. tional maintenance). 907 Mechanic, Turret. 065 Seaman. • 913 Artillery Mechanic. Light. 080 Marine Engineer. 914 Artillery Mechanic, Heavy. 117 Marine Fireman. 915 Artillery Mechanic. Heavy.Antiaircraft. 118 Small Boat Operator. • 923 Welder,' Armor Plate. 141 Marine Oiler. 973 Chief Artil.iery Mechanic. 546 Coxswain, Mine Yawl. 978 Artillery Mechanic, Lighl Antiaircraft. 547 Master, L Boat. 1907 Gyrostabilizer Mechanic. 732 Amphibian Tractor Driver. b. Aircraft •Armament Maintenance. 797 Amphibian Truck Mechanic (DUKW). 575 Remote Control Turret 'Repairman. 837 Amphibian Track Vehicle Mechanic. 662 Aerial Torpedo Mechanic. 838 Seaman, Landing Craft. 678 Power Turret and Gunsight Mechanic. 839 Marine Engineman. 681 Power Turret and Gunsighi Repairman. 927 Amphibian Transportation NCO. 960 Remote Control Turret Mechanic. 934 Amphibian Truck Driver. c. Airplane Maintenance ami Repair. e. Air Transportation. 528 Airplane Hydraulic Mechanic. 967 Air Transportation Technician. 548 Fabric and Dope Mechanic. 2967 Flight Traffic Clerk. 550 Airplane Woodworker. 555 Airplane Sheet Metal Worker. 5. Supply. 559 Glider Mechanic. a. General. 573 Welder, Aircraft. 252 Foreman, Warehouse. 665 Fuel Cell Repairman. 348 Parts Clerk, Automotive. 684 Airplane Power Plant Mechanic. 505 Ammunition NCO. 685 Airplane Electrical Mechanic. 581 Signal Supply Technician. 687 Airplane Propeller Mechanic. 582 Aerial Mine Technician. 689 Airplane .Cable Mechanic. 583 Engineer Supply Technician. 747 Airplane and Engine Mechanic. 656 Submarine Mine Loader. 750 Airplane Maintenance Technician. 714 Mine Supply Maintenance Technician. 762 Airplane Engine Repairman. 769 Chief Storekeeper, Railway. 911 Airplane.Ar'morer. 815 Ordnance Supply NCO. 925 Aircraft Engineering Technician. 821 Quartermaster Supply Technician. 956 Airplane Carburetor Repairman. 11 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

958 Airplane and Engine Electrical Acces 952 Radar Repairman, Gun-Laying Equip sories Repairman. ment (Designated Set). 964 Airplane Supercharger Repairman, 953 Radar Repairman, Reporting Equip d. Instrument Repair. ment (Designated Set). 098 Instrument Repairman. Nonelectrical. 955 Radar Repairman, Airborne Equip 338 Instrument Repairman, Electrical. ment (Designated Set). 381 Watch Repairman. 974 Radar Repairman, AN/TPT (Desig 574 Bombsight and Automatic Pilot Repair nated Model). man. 993 Radio Mechanic, PQ Target Airplane. 579 Casemate Electrician. 1645. Radio Repairman, AN/MRQ (Desig 683 Bombsight Mechanic. nated Model). 686 Airplane Instrument Mechanic. /. Photography Equipment Repair. o99 Director Repairman, Electrical. Heavy 042 Camera Repairman. Antiaircraft Artillery. 158 Microfilm Equipment Repairman. 917 Director Repairman, Meclianica.1, Heavy 206 Sound Projector Repairman. Antiaircraft Artillery. 207 Sound Recording Equipment Mainte 918 Fire Control Repairman, Light Antiair nance Man. craft Artillery. 941 Camera Technician. 919 Control System Repairman. Heavy An g. Special Equipment Repair. tiaircraft Artillery. 229 Medical Equipment Maintenance Tech 921 Height Finder Repairman. nician. 922 Instrument Repairman, Fire Control. 282 Office Machine Serviceman. 957 Airplane Electrical Instrument Me 366 Orthopedic Mechanic. chanic. 593 Link Trainer Mechanic. 959 Airplane Mechanical Instrument Re 969 Link Celestial Navigation Trainer Me pairman. chanic. 961 Airplane Gyro Instrument Repairman. h. Automotive Equipment Repair. 962 Optical Instrument Repairman. 138 Motorcycle Mechanic. 994 Servo Mechanic, PQ Target Airplane. 240 Tire Rebuilder. e. Radio and Radar Repair. 319 Construction Equipment Mechanic. 150 Crystal Grinder. 337 Foreman, Automotive Repair Shop. 647 Radio Repairman, Aircraft Equipment. 413 .Motor Inspector. 648 Radio Repairman. 529 Wrecker Crewman. 649 Radio Repairman,'Fixed Station. 905 Mechanic, Engine, Wheel Vehicle (Gas 754 Radio Mechanic, AAF. oline) . 775 Radar Mechanic, Ground Equipment 906 Mechanic, Chassis, Wheel Vehicle. (Designated Set). 908 Mechanic, Chassis, Track Vehicle. 778 Radio Mechanic, AACS. 909 Mechanic, Engine, Track Vehicle. 792 Radio Repairman, Single Channel Tele 912 Electrician, Automotive. type. 926 Mechanic, Fuel Induction. 849 Radar Mechanic, Troop Carrier. 965 Mechanic, Automotive, Wheel Vehicle 850 Radar Mechanic, Night Fighter. (Third Echelon). 851 Radar Mechanic, Beacon. 966 Mechanic, Automotive, Track Vehicle 852 Radar Mechanic, RCM (Third Echelon). 853 Radar Mechanic, Navigation. i. Railway Maintenance. 854 Radar Mechanic, Sea Search. 181 Signal Mechanic, Railway. 856 Radar Mechanic, Sea Search (LAB). 182 High Voltage Lineman. 860 Radar Mechanic (GEE). 184 Substation Operator. 862 Radar Mechanic (IFF). 199 Section Hand, Railway. 863 Radar Mechanic (GCA). 258 Substation Electrician. 867 Radar Mechanic, Bombardment. 281 Third Rail Repairman. 868 Radio-Teletype Mechanic. 401 High Voltage Cable Splicer. 933 Instrument Landing Equipment Me /. Railway Equipment Maintenance. chanic. 046 Car Carpenter, Railway. 948 Radar Mechanic, Ground Loran. 048 Car Mechanic, Railway. 951 Radio Repairman, VHF. 112 Locomotive Mechanic. 12 FUNCTIONAL GROUPING OF MILITARY OCCUPATIONAL SPECIALTIES

135 Electric Locomotive Repairman. 204 Shoe Repairman. 205 Shop Engineer, Railway. 234 Tailor. *k. Boat Maintenance. 530 Salvage Repair NCO. 202 Carpenter, Ship. 609 Leather and Canvas Worker. 456 Calker. 620 Parachute Rigger and Repairman. 477 Mechanic, Marine Engine. 924 Bomb Salvage Technician. 478 Ship Fitter. p. Laundry Operation and Maintenance. I. Balloon Maintenance. 102 Foreman, Laundry. 535 Balloon Gas Handler. 103 Laundry Machine Operator. 615 Chief Balloon Rigger. 104 Laundry Maintenance Mechanic. 619 Balloon Rigger. q. Fumigation and Bath. 639 Balloon Armorer. 591 Foreman, Fumigation and Bath. 77i. Shop Maintenance. 706 Fumigation and Bath Man. 024 Blacksmith. 7. Medical. 114 Machinist. a. Medical Care. 129 Foundryman. 067 Dental Laboratory Technician. 148 Pattern Maker, Wood. 072 Physical Therapy Technician. 242 Toolroom Keeper. 264 X-ray Technician. 256 Welder, Combination. 365 Optician. 302 Machine Operator (Designated Ma 409 Medical Technician. chine). 422 Podiatrist. 341 Shop Maintenance Mechanic. 452 Optometrist. 342 Master Mechanic. 657 Medical Aidman. 431 Machinist's Helper. 673 Medical NCO. 457 Shop Clerk. 855 Dental Technician. n. Maintenance, General. 861 Surgical Technician. 013 Diesel Mechanic. b. Pharmacy and Laboratory. 030 Boilermaker. 149 Pharmacist. 050 Carpenter, General. 484 Entomology Technician. 061 Coppersmith. 858 Medical Laboratory Technician. 077 Powerhouse Engineer. 859 Pharmacy Technician. 078 Electrician. c. Veterinary. 081 Engineman, Operating. 120 Meat or Dairy Inspector. €82 Stationary Engineer. 250 Veterinary Technician. 084 Stationary Fireman. 700 Veterinary Ambulance Orderly. 092 Generator Switchboard Operator. d. Sanitation. 113 Woodworking Machine Operator. 196 Sanitary Technician. 121 Utility Repairman. 8. Construction and Engineering, 144 Painter, General. a. Construction, General. 145 Painter, Sign. 034 Bricklayer. 164 Plumber. 035 Carpenter, Heavy Construction. 165 Lineman, Power. 059 Foreman, Construction. 166 Powerman. 063 Crane Operator. 189 Rigger. 064 Power Shovel Operator. 201 Sheet Metal Worker. 100 Structural Steel Worker. 270 Cooper. 116 Dredgeman. 304 Electric Motor Repairman. 214 Stonemason. 322 Refrigeration Mechanic. 259 Well Driller. 506 Portable Power Generator Repairman. 359 Construction Machine Operator. 822 Utilities NCO. 533 Demolition Specialist. 846 Portable Power Generator Operator. 729 Pioneer. o. Salvage and Repair. 804 Camouflage Technician. 044 Canvas Cover- Repairman. 817 Pontoneer. 192 Saddle and Harness Maker. b. Diving Operations. 194 Salvage Technician. 454 Diver. 200 Sewing Machine Operator. 455 Diver's Helper, ti'MO'JS

c. Logging and Sawmill. 107 Photolithographer. 329 Lumberjack. 134 Laboratory Technician, Motion Picture. 459 Sawmill Machine Operator. 945 Photographic Laboratory Technician-* 462 Forest Products Tallyman. e. Chemical and Physics Laborat-ory. 464 Millwright, Sawmill. 160 Physics Laboratory Assistant. 466 Foreman, Logging. 292 Chemist. d. Fire Fighting. 293 Chemical Engineer. 383 Fire Fighter. 358 Glassblower. e. Oil and Water Supply (including organiza 411 Chemical Laboratory Assistant. tional maintenance). /. Weather Observation (including mainte 220 Pump Operator. nance). 485 Petroleum Storage Technician. 782 Weather Equipment Technician. 487 Petroleum. Pumping Equipment Repair 784 Weather Observer. man. 787 Weather Forecaster. 727 Water Supply Technician. 790 Weather Observer-Teletype Technician 9. Technical. 942 Radiosonde Operator. a. Surveying and Drafting. g. Training (including maintenance). 004 Aerial Phototopographer. 283 Athletic Instructor. 070 Draftsman. 458 Dog Trainer. 071 Draftsman, Mechanical. 617 Altitude Chamber Technician. 074 Draftsman, Structural. 658 Link Trainer Instructor. 075 Draftsman, Electrical. 659 Instructor (Designated Subject). 076 Draftsman, Topographic. 688 Tow Target Reel Operator. 136 Model Maker. 691 Flexible Gunnery Trainer Operator-Mt- 191 Rodman and Chainman, Surveying. chanic. 227 Surveyor. 703 Coxswain, Radio Target Boat. 228 Survey and Instrument Man. 938 AAF Gunnery Instructor. 230 Surveyor, Topographic. 970 Link Celestial Navigation Trainer Op 243 Geodetic Computer. erator. 387 Cartographer. h. Miscellaneous.. 577 Survey and Instrument NCO, Field Ar 486 Safety Inspector. tillery. 170 Engineering Aide (Designated Field). 1076 Observation Draftsman. 479 Still Operator. b. Photography. 719 Oxygen and Acetylene Plant Operator. 043 Cameraman, Motion Picture. 722 Submarine Mine Planter. 130 Animation Artist. 10. Administration. 131 Film Editor, Motion Picture. a. Clerical—A dministrative. 132 Electrician, Motion Picture. 055 Clerk, General. 137 Projectionist, Motion Picture. 056 Postal Clerk. 152 Photographer. 213 Stenographer. 208 Sound Recorder, Motion Picture. 267 Translator. 285 Cameraman, Animated Motion Picture. 279 Legal Clerk. 286 Motion Picture Production Technician. 320 Interpreter. 287 Sound Editor, Motion Picture. 373 Sales Clerk. 407 Sound Mixer, Motion Picture. 405 Clerk-Typist. 415 Electrician, Sound Transmission. 502 Administrative NCO. 449 Process Background Supervisor. 622 Finance Technical Clerk. c. Printing and Publishing. 623 Finance Typist Clerk. 128 Multilith or Multigraph Operator. 624 Finance Clerk. 167 Lithographic Pressman. b. Classification and Guidance. 168 Printer. 262 Occupational Counselor. 169 Job Pressman. 263 Psychiatric Social Worker. d. Photographic Laboratory. 275 'Classification Specialist. 016 Laboratory Technician, V-mail or Mi 289 Personnel Consultant Assistant. crofilm. 290 Personnel Technician. 028 Blueprinter or Photostat Operator. c. Machine Records.

14 30 Jun 45 TM 12-427 C 2

272 Key Punch Operator. 288 Playwright. 400 Tabulating Machine Operator. 296 Artist. 425 Tabulating Machine Repairman. 442 Entertainment Specialist. d. Military Band. 1274 Personal Affairs Consultant. 020 Band Leader. 2274 Information and Education Specialist. 175 Bandsman, Oboe. /. Miscellaneous. 176 Bandsman, Bassoon. 022 Barber. 432 LJandsman, Clarinet. 188 Duty Soldier II. 433 Bandsman, Cornet or Trumpet 356 Foreman, Labor. 434 Bandsman, Bass Drum. 521 Basic. 435 Bandsman, Snare Drum. 522 Duty Soldier I. 436 Bandsman, Euphonium or Baritone. 564 Special Assignment. 437 Bandsman, Flute or Piccolo. 566 Duty NCO. 438 Bandsman, French Horn. 590 Duty Soldier III. 439 Bandsman, Saxophone. 625 Officer Candidate. 440 Bandsman, Trombone. 629 Student. 441 Bandsman, Tuba. 803 Bugler. e. Special Services. 980 Graves Registration Technician. 274 Information Specialist (Designated Subject).

AGO S88A 15 TIM 12-427 30 Jun 45 C 2 Section II! Numerical List of Military Occupational Specialties

SSN Title Pag* SSN Title P« 004 AERIAL PHOTOTOPOGRAPHER (DESIG- 103 LAUNDRY MACHINE OPERATOR...... 32 NATED EQUIPMENT) ...... 21 104 LAUNDRY MAINTENANCE MECHANIC. 32 013 DIESEL MECHANIC...... 21 107 PHOTOLITHOGRAPHER...... 32 014 AUTOMOTIVE MECHANIC (SECOND 110 LOCOMOTIVE ENGINEER...... 33 ECHELON)...... 21 HI LOCOMOTIVE FIREMAN ...... 33 016 LABORATORY TECHNICIAN. V-MAIL OR 112 LOCOMOTIVE MECHANIC...... 33 MICROFILM...... 21 113 WOODWORKING MACHINE OPERATOR. 33 017 BAKER...... 22 114 MACHINIST...... 34 020 BAND LEADER...... 22 115 AUTOMATIC TELEPHONE SYSTEM 022 BARBER...... 22 MAINTENANCE MAN...... 34 024 BLACKSMITH...... 22 116 DREDGEMAN...... 34 028 BLUEPRINTEH OR PHOTOSTAT OPERA 117 MARINE FIREMAN...... 34 TOR...... 22 118 SMALL BOAT OPERATOR...... 35 030 BOILEHMAKER...... 23 120 MEAT OR DAIRY TECHNICIAN...... 35 033 BRAKEMAN, RAILWAY...... 23 121 UTILITY REPAIRMAN...... 35 034 BRICKLAYER...... 23 128 MULTILITH OR MULTIGRAPH OPERA 035 CARPENTER, HEAVY CONSTRUCTION.. 23 TOR ...... 35 037 MEAT CUTTER...... 23 129 FOUNDRYMAN...... 36 039 CABLE SPLICER. TELEPHONE AND 130 ANIMATION ARTIST...... 36 TELEGRAPH...... 24 131 FILM EDITOR, MOTION PICTURE...... 36 042 CAMERA REPAIRMAN...... 24 132 ELECTRICIAN, MOTION PICTURE...... 36 043 CAMERAMAN. MOTION PICTURE...... 24 134 LABORATORY TECHNICIAN. MOTION 044 (Use 609.) PICTURE...... 36 046 CAR CARPENTER, KAILWAY...... 24 135 ELECTRIC LOCOMOTIVE REPAIRMAN.. 37 047 TRAFFIC MAN, RAILWAY...... 25 136 MODEL MAKER...... 37 048 CAR MECHANIC, RAILWAY...... 25 137 PROJECTIONIST, MOTION PICTURE.... 37 050 CARPENTER, GENERAL...... 25 138 MOTORCYCLE MECHANIC...... 37 055 CLERK, GENERAL...... 25 141 MARINE OILER...... 37 056 POSTAL CLERK...... 26 144 PAINTER. GENERAL...... 38 058 CONDUCTOR, RAILWAY...... '...... 26 145 PAINTER, SIGN...... 38 059 FOREMAN. CONSTRUCTION...... 26 148 PATTERN MAKER. WOOD...... 38 060 COOK...... 26 149 PHARMACIST...... 38 061 COPPERSMITH...... 26 150 CRYSTAL GRINDER...... 38 063 CRANE OPERATOR...... 26 152 PHOTOGRAPHER...... 38 064 POWER SHOVEL OPERATOR...... 27 158 MICROFILM EQUIPMENT REPAIRMAN. 39 065 SEAMAN...... 27 160 PHYSICS LABORATORY ASSISTANT..... 39 067 DENTAL LABORATORY TECHNICIAN .. 27 164 PLUMBER...... 39 069 DISPATCHER. RAILWAY...... 27 165 LINEMAN, POWER...... 39 070 DRAFTSMAN...... 27 166 POWERMAN...... 40 071 DRAFTSMAN, MECHANICAL...... 28 167 LITHOGRAPHIC PRESSMAN...... 40 072 PHYSICAL THERAPY TECHNICIAN..... 28 168 PRINTER...... 40 074 DRAFTSMAN, STRUCTURAL...... 28 169 JOB PRESSMAN...... 40 075 DRAFTSMAN, ELECTRICAL...... 28 170 ENGINEERING AIDE (DESIGNATED 076 DRAFTSMAN, TOPOGRAPHIC...... 28 FIELD)...... 40 077 POWERHOUSE ENGINEER...... 29 175 BANDSMAN, OBOE...... 41 078 ELECTRICIAN...... 29 176 BANDSMAN, BASSOON...... 41 080 MARINE ENGINEER...... 29 181 SIGNAL MECHANIC, RAILWAY...... 41 081 ENGINEMAN, OPERATING...... 29 182 HIGH VOLTAGE LINEMAN...... 41 082 STATIONARY ENGINEER...... 29 184 SUBSTATION OPERATOR...... 41 084 STATIONARY FIREMAN...... 30 185 RAILWAY SIGNAL OPERATOR...... 41 092 GENERATOR SWITCHBOARD OPERA 187 REPEATERMAN, TELEPHONE...... 41 TOR...... 30 188 DUTY SOLDIER II...... 42 093 HORSEBREAKER...... 30 189 RIGGER...;...... 42 094 HORSESHOER...... 30 191 RODMAN AND CHAINMAN, SURVEYING. 42 095 CENTRAL OFFICE TECHNICIAN...... 31 192 SADDLE AND HARNESS MAKER...... 42 097 INSTALLER-REPAIRMAN. TELEPHONE 194 SALVAGE TECHNICIAN...... 4J AND TELEGRAPH...... 31 196 SANITARY TECHNICIAN...... 43 098 INSTRUMENT REPAIRMAN. NON 197 SUBMARINE CABLE STATION TECHNI ELECTRICAL...... 31 CIAN...... 41 100 STRUCTURAL STEEL WORKER...... 31 199 SECTION HAND, RAILWAY...... 4J 102 FOREMAN, LAUNDRY...... 32 200 SEWING MACHINE OPERATOR...... 44

16 AGO283A NUMERICAL LIST OF MILITARY OCCUPATIONAL SPECIALTIES

SSN Title ' Page SSN Title Page 201 SHEET METAL WORKER...... 44 322 REFRIGERATION MECHANIC ...... 56 202 CARPENTER, SHIP ...... 44 329 LUMBERJACK ...... 56 204 SHOE REPAIRMAN ...... 44 337 FOREMAN, AUTOMOTIVE REPAIR SHOP...... 56 205 SHOP ENGINEER, RAILWAY...... 44 338 INSTRUMENT REPAIRMAN, ELECTRICAL...... 57 206 SOUND PROJECTOR REPAIRMAN...... 44 341 SHOP MAINTENANCE MECHANIC...... 57 207 SOUND RECORDING EQUIPMENT MAINTE 342 MASTER MECHANIC ...... 57 NANCE MAN ...... 45 345 TRUCK DRIVER, LIGHT...... 57 208 SOUND RECORDER, MOTION PICTURE...... 45 348 PARTS CLERK, AUTOMOTIVE...... 58 209 SUBMARINE CABLE STATION OPERATOR...... 45 356 FOREMAN, LABOR ...... 58 213 STENOGRAPHER ...... 45 358 GLASSBLOWER ...... 58 214 STONEMASON ...... 45 359 CONSTRUCTION MACHINE OPERATOR ...... 58 220 PUMP OPERATOR ...... 46 365 OPTICIAN ...... 58 227 SURVEYOR ...... 46 366 ORTHOPEDIC MECHANIC ...... 58 228 SURVEY AND INSTRUMENT MAN...... 46 371 PURCHASING AGENT ...... 59 229 MEDICAL EQUIPMENT MAINTENANCE 373 SALES CLERK ...... 59 TECHNICIAN ...... 46 378 MOTORCYCLIST ...... 59 230 SURVEYOR, TOPOGRAPHIC ...... 47 381 WATCH REPAIRMAN ...... 59 232 SWITCHBOARD INSTALLER-REPAIRMAN, 383 FIRE FIGHTER ...... 59 MANUAL ...... 47 384 INSTALLER, TOLL TELEPHONE AND 234 TAILOR ...... i...... '...... - 47 TELEGRAPH ...... 59 235 TEAMSTER ...... 47 387 CARTOGRAPHER ...... 60 236 TELEGRAPH OPERATOR ...... 47 400 TABULATING MACHINE OPERATOR...... 60 237 TELETYPE OPERATOR ...... 47 401 HIGH VOLTAGE CABLE SPLICER...... 60 238 LINEMAN, TELEPHONE AND TELEGRAPH...... 48 405 CLERK-TYPIST ...... 60 239 TELETYPE MECHANIC ...... 48 407 SOUND MIXER, MOTION PICTURE...... 60 240 TIRE REBUILDER ...... 48 409 MEDICAL TECHNICIAN ...... 61 242 TOOLROOM KEEPER ...... 48 411 CHEMICAL LABORATORY ASSISTANT...... 61 243 GEODETIC COMPUTER ...... 48 413 MOTOR INSPECTOR ...... 61 246 CARGO GEAR MECHANIC ...... 49 415 ELECTRICIAN, SOUND TRANSMISSION...... 61 250 VETERINARY TECHNICIAN ...... 49 422 PODIATRIST ...... 61 252 FOREMAN, WAREHOUSE ...... 49 425 TABULATING MACHINE REPAIRMAN...... 62 256 WELDER, COMBINATION ...... 49 431 MACHINIST'S HELPER ...... 62 258 SUBSTATION ELECTRICIAN ...... 49 432 BANDSMAN, CLARINET ...... 62 259 WELL DRILLER ...... 50 433 BANDSMAN, CORNET OR TRUMPET...... 62 261 WIRE CHIEF, TELEPHONE AND 434 BANDSMAN, BASS DRUM...... 62 TELEGRAPH :...... 50 435 BANDSMAN, SNARE DRUM ...... 62 262 OCCUPATIONAL COUNSELOR ...... 50 436 BANDSMAN, EUPHONIUM OR BARITONE...... 62 263 PSYCHIATRIC SOCIAL WORKER...... 50 437 BANDSMAN, FLUTE OR PICCOLO...... 62 264 X-RAY TECHNICIAN ...... 51 438 BANDSMAN, FRENCH HORN ...... 62 265 YARDMASTER ...... 51 439 BANDSMAN, SAXOPHONE ...... 62 267 TRANSLATOR ...... 51 440 BANDSMAN, TROMBONE ...... 62 270 COOPER ...... si 441 BANDSMAN, TUBA ...... 62 271 LONGSHOREMAN ...... 51 442 ENTERTAINMENT SPECIALIST ...... 63, 272 KEY PUNCH MACHINE OPERATOR...... 51 449 PROCESS BACKGROUND SUPERVISOR...... 63 274 WRITER, MILITARY SUBJECTS...... 52 452 OPTOMETRIST ...... 63 275 CLASSIFICATION SPECIALIST ...... !...... 52 454 DIVER ...... 63 279 LEGAL CLERK ...... 52 455 DIVER'S HELPER ...... 63 281 THIRD RAIL REPAIRMAN...... 52 456 CALKER ...... 64 282 OFFICE MACHINE SERVICEMAN...... 52 457 SHOP CLERK ...... 64 283 ATHLETIC INSTRUCTOR ...... 53 458 DOG TRAINER ...... 64 285 CAMERMAN, ANIMATED MOTION PICTURE...'. 53 459 SAWMILL MACHINE OPERATOR ...... 64 286 MOTION PICTURE PRODUCTION 462 FOREST PRODUCTS TALLYMAN...... 64 TECHNICIAN ...... 53 464 MILLWRIGHT, SAWMILL ...... 64 287 SOUND EDITOR, MOTION PICTURE...... 53 466 FOREMAN, LOGGING ...... 65 288 PLAYWRIGHT ...... 53 470 CARGO CHECKER ...... 65 289 PERSONNEL CONSULTANT ASSISTANT...... 54 473 WINCH OPERATOR ...... 65 290 PERSONNEL TECHNICIAN ...... 54 477 MECHANIC, MARINE ENGINE...... 65 292 CHEMIST ...... :...... 54 478 SHIP FITTER ...... 65 293 CHEMICAL ENGINEER ...... 54 479 STILL OPERATOR ...... 66 296 ARTIST'...... 54 484 ENTOMOLOGY TECHNICIAN ...... 66 301 INVESTIGATOR ...... 55 485 PETROLEUM STORAGE TECHNICIAN...... 66 302 MACHINE OPERATOR (DESIGNATED 486 SAFETY INSPECTOR ...... 66 MACHINE) ...... 55 487 PETROLEUM PUMPING EQUIPMENT 304 ELECTRIC MOTOR REPAIRMAN...... 55 REPAIRMAN ...... 66 309 TELEPHONE OPERATOR ...... 55 502 ADMINISTRATIVE NCO ...... 67 316 AUTOMOBILE SERVICEMAN ...... 55 505 AMMUNITION NCO ...... 67 319 CONSTRUCTION EQUIPMENT MECHANIC...... 56 506 PORTABLE POWER GENERATOR 320 INTERPRETER ...... 56 REPAIRMAN ...... 67 17 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN Tiili- Pase SSN Tille 509 BOMBARDIER ...... 67 620 PARACHUTE RIGGER AND REPAIRMAN. ... 80 510 INFORMATION CENTER OPERATOR...... 67 622 FINANCE TECHNICAL CLERK...... 80 511 ARMORER ...... 68 623 FINANCE TYPIST CLERK ...... 80 514 RADAR CREWMAN (DESIGNATED SET)...... 68 624 FINANCE CLERK...... 80 518 GROUND AIRCRAFT OBSERV ER ...... 68 625 OFFICER CANDIDATE ...... 81 521 BASIC ...... 68 629 STUDENT ...... 81 522 DUTY SOLDIER I...... 69 631 INTELLIGENCE NCO ...... 81 526 BALLOON CREWMAN ...... 69 633 FIRE CONTROL ELECTRICIAN, ANTIAIR 527 ANTIAIRCRAFT RANGE SECTION NCO...... 69 CRAFT (AUTOMATIC WEAPONS) ...... 81 528 AIRPLANE HYDRAULIC MECHANIC...... 69 634 FIRE CONTROL ELECTRICIAN, ANTIAIR 529 WRECKER CREWMAN ...... 69 CRAFT (GUN)" ...... 81 530 SALVAGE REPAIR NCO...... 70 635 SEARCHLIGHT ELECTRICIAN ...... 82 533 DEMOLITION SPECIALIST ...... 70 639 BALLOON ARMORER ...... 82 535 BALLOON GAS HANDLER...... 70 641 FIELD LINEMAN ...... 82 538 VOICE INTERCEPTOR (DESIGNATED 645 FIRE CONTROL INSTRUMENT OPERATOR, LANGUAGE) ...... 70 FIELD ARTILLERY ...... 82 542 COMMUNICATIONS CHIEF ...... 71 647 RADIO REPAIRMAN, AIRCRAFT EQUIP 543 RADIO INTELLIGENCE CONTROL CHIEF...... 71 MENT ...... 82 546 COXSWAIN, MINE YAWL ...... 71 648 RADIO REPAIRMAN ...... 83 547 MASTER, L BOAT...... 71 649 RADIO REPAIRMAN, FIXED STATION ...... 83 548 FABRIC AND DOPE MECHANIC...... 72 650 TELEPHONE SWITCHBOARD OPERATOR...... 83 550 AIRPLANE WOODWORKER ...... 72 656 SUBMARINE MINE LOADER ...... 83 552 CONTROL TOWER OPERATOR...... 72 657 MEDICAL AIDMAN ...... 84 555 AIRPLANE SHEET METAL WORKER...... 72 6.58 LINK TRAINER INSTRUCTOR...... 84 559 GLIDER MECHANIC ...... 72 659 INSTRUCTOR (DESIGNATED SUBJECT) ...... 84 560 PIGEONEER ...... 73 660 TANK MECHANIC, MINOR MAINTENANCE..... 84 563 HORSE ARTILLERY DRIVER ...... 73 662 AERIAL TORPEDO MECHANIC ...... 84 564 SPECIAL ASSIGNMENT ...... 73 665 FUEL CELL REPAIRMAN...... 85 565 PACK DRIVER ...... 73 667 MESSAGE CENTER CLERK...... 85 566 DUTY NCO ...... 73 669 MILITARY POLICEMAN, OCCUPIED 571 ELECTRICIAN, HARBOR DEFENSE...... 73 TERRITORY ...... 85 572 SEACOAST GUN DATA COMPUTER...... 74 670 MASTER GUNNER, COAST ARTILLERY...... 85 573 WELDER, AIRCRAFT ...... 74 671 MASTER GUNNER, ANTIAIRCRAFT (GUN >..... 86 574 BOMBSIGHT AND AUTOMATIC PILOT 673 MEDICAL NCO ...... 86 REPAIRMAN ...... 74 674 MESSAGE CENTER CHIEF...... 86 575. REMOTE CONTROL TURRET REPAIRMAN...... 74 677 MILITARY POLICEMAN ...... 86 576 FLASH RANGING OBSERVER...... 74 678 POWER TURRET AND GUNSIGHT 577 SURVEY AND INSTRUMENT NCO, FIELD MECHANIC ...... 87 ARTILLERY ...... 74 681 POWER TURRET AND GUNSIGHT 578 OBSERVATION STATION OPERATOR, REPAIRMAN ...... 87 COAST ARTILLERY ...... 75 683 BOMBSIGHT MECHANIC ...... 87 579 CASEMATE ELECTRICIAN ...... 75 684 AIRPLANE POWER PLANT MECHANIC...... 87 580 REMOTE CONTROL TURRET MECHANIC 685 AIRPLANE ELECTRICAL MECHANIC...... 87 GUNNER ...... 75 686 AIRPLANE INSTRUMENT MECHANIC...... 88 581 SIGNAL SUPPLY TECHNICIAN ...... 75 687 AIRPLANE PROPELLER MECHANIC...... 88 582 AERIAL MINE TECHNICIAN...... 76 688 TOW TARGET REEL OPERATOR...... 88 583 ENGINEER SUPPLY TECHNICIAN...... 76 689 AIRPLANE CABLE MECHANIC...... 88 586 SOUND RANGING OBSERVER ...... 76 691 FLEXIBLE GUNNERY TRAINER OPERATOR- 590 DUTY SOLDIER III...... 76 MECHANIC ...... 88 591 FOREMAN, FUMIGATION AND BATH...... 76 692 HEIGHT FINDER OBSERVER...... 88 593 LINK TRAINER MECHANIC...... 77 700 VETERINARY AMBULANCE ORDERLY...... 88 597 ANTIAIRCRAFT ARTILLERY MACHINE 703 COXSWAIN, RADIO TARGET BOAT...... 89 GUN CREWMAN, SP...... 77 706 FUMIGATION AND BATH MAN...... 89 598 ANTIAIRCRAFT ARTILLERY NCO, SP 709 TRAFFIC ANALYST (RADIO)...... 89 WEAPONS ...... 77 710 STABLE SERGEANT ...... 89 601 ANTIAIRCRAFT ARTILLERY AUTOMATIC 712 PACKER, ANIMAL ...... 89 WEAPONS CREWMAN ...... :...... 77 713 PACKMASTER ...... 90 604 LIGHT MACHINE GUNNER ...... 78 714 MINE SUPPLY MAINTENANCE TECHNICIAN. ... 90 605 HEAVY MACHINE GUNNER...... 78 719 OXYGEN AND ACETYLENE PLANT 607 LIGHT MORTAR CREWMAN...... 78 OPERATOR ...... 90 608 GUN CREWMAN, COAST ARTILLERY...... 78 722 SUBMARINE MINE PLANTER...... 90 609 LEATHER AND CANVAS WORKER...... 79 .. 724 'RANGE SECTION OPERATOR, COAST 610 ANTITANK GUN CREWMAN...... 79 ARTILLERY ...... 91 611 AERIAL GUNNER ...... 79 727 WATER SUPPLY TECHNICIAN...... 91 612 AIRPLANE ARMORER-GUNNER ...... 79 729 PIONEER ...... 91 615 CHIEF BALLOON RIGGER ...... 79 731 SMOKE GENERATOR OPERATOR...... 91 617 ALTITUDE CHAMBER TECHNICIAN...... 80 732 AMPHIBIAN TRACTOR DRIVER...... 92 619 . BALLOON RIGGER ...... 80 733 RECONNAISSANCE CAR CREWMAN...... 92 18 NUMERICAL LIST OP MILITARY OCCUPATIONAL SPECIALTIES

SSN Title P.ig., SSN Title I*»6« 735 FULL-TRACK DRIVER...... 92 833 ARTILLERY MECHANIC, ANTIAIRCRAFT 737 FLIGHT ENGINEER ...... 92 (AUTOMATIC WEAPONS) MINOR MAIN 738 INTERCEPT OPERATOR, G...... : 93 TENANCE ...... 105 739 INTERCEPT OPERATOR. J...... 93 834 ARTILLERY MECHANIC, ANTIAIRCRAFT 740 RADIO OPERATOR, INTERMEDIATE SPEED..-.. 93 (GUN) MINOR MAINTENANCE...... 105 745 RIFLEMAN ...... 94 835 SUPPLY CLERK ...... 106 746 AUTOMATIC RIFLEMAN ...... 94 836 SOUND RECORDER, FIELD ARTILLERY...... 106 747 AIRPLANE AND ENGINE MECHANIC...... 94 837 AMPHIBIAN TRACK VEHICLE MECHANIC...... 106 748 AIRPLAJME M ECHANIC-GUNNER ...... 94 838 SEAMAN, LANDING CRAFT...... 106 750 AIRPLANE MAINTENANCE TECHNICIAN...... 95 839 MARINE ENGINEMAN ...... 107 754 RADIO MECHANIC. AAF ...... 95 841 ARTILLERY MECHANIC, ANTIAIRCRAFT 756 RADIO OPERATOR, AAF...... 95 (SELF-PROPELLED) MINOR MAINTE 757 RADIO OPERATOR-MECHANIC-GUNNER, NANCE ...... 107 AAJF ...... 95 842 RADAR OPERATOR, AN/TPQ (DESIGNATED 759 RADIO OPERATOR. CNS...... 96 MODEL) ...... 107 760 RADIO OPERATOR, AACS...... 96 843 RADAR OPERATOR, AN/TPT (DESIGNATED 761 SCOUT ...... 96 MODEL) ...... 107 762 AIRPLANE ENGINE REPAIRMAN...... 97 844 GUN CREWMAN, LIGHT ARTILLERY .\...... 108 763 SEARCHLIGHT CREWMAN ...... 97 845 GUN CREWMAN, HEAVY ARTILLERY...... 108 765 VISUAL SIGNALMAN ...... 97 846 PORTABLE POWER GENERATOR 766 RADIO OPERATOR, HIGH SPEED, MANUAL.... 97 OPERATOR ...... 108 768 CONTROL CENTER TECHNICIAN...... 98 847 PROSTHETIC DENTAL SUPPLY CLERK...... 109 769 CHIEF STOREKEEPER. RAILWAY...... 98 848 PARTS CLERK. ARMAMENT...... 109 770 AIRPLANE PILOT ...... 98 849 RADAR MECHANIC, TROOP CARRIER ...... 109 772 LIAISON PILOT ...... 98 850 RADAR MECHANIC, NIGHT FIGHTER...... 109 773 SERVICE PILOT ...... 98 851 RADAR MECHANIC, BEACON ...... 109 775 RADAR MECHANIC. GROUND EQUIPMENT 852 RADAR MECHANIC, RCM ...... 109 (DESIGNATED SET) ...... 98 853 RADAR MECHANIC, NAVIGATION ...... ".... 109 776 RADIO OPERATOR, LOW SPEF.D...... 98 854 .RADAR MECHANIC, SEA SEARCH ...... 109 777 RADIO OPERATOR, HIGH SPKED, AUTO 855 DENTAL TECHNICIAN ...... 109 MATIC ...... 99 856 RADAR MECHANIC, SEA SEARCH (LAB)...... 109 778 RADIO MECHANIC. AACS...... 99 858 MEDICAL LABORATORY TECHNICIAN ...... 110 782 WEATHER EQUIPMENT TECHNICIAN.:...... 99 859 PHARMACY TECHNICIAN ...... 110 784 WEATHER OBSERVER ...... 99 860 RADAR MECHANIC (GEE) ...... 110 786 TOXIC GAS HANDLER...... 99 861 SURGICAL TECHNICIAN ...... 110 787 WEATHER FORECASTER ...... 100 862 RADAR MECHANIC (IFF) ...... 110 790 WEATHER OBSERVER-TELETYPE 863 RADAR MECHANIC (GCA) ...... 110 TECHNICIAN ...... 100 864 GUN CREWMAN, MEDIUM ARTILLERY...... Ill 791 AIR OPERATIONS SPECIALIST...... 100 866 RADAR OBSERVER, SEA SEARCH...... Ill 792 RADIO REPAIRMAN, SINGLE CHANNEL 867 RADAR MECHANIC, BOMBARDMENT...... Ill TELETYPE ...... 100 868 RADIO-TELETYPE MECHANIC ...... Ill 797 AMPHIBIAN TRUCK MECHANIC (DUKW)...... 101 869 DF EVALUATOR ...... Ill 798 TRANSMITTER ATTENDANT, FIXED 870 CHEMICAL NCO ...... Ill . STATION ...... 101 893 FACSIMILE OPERATOR ...... 112 799 INTERCEPT OPERATOR, FIXED STATION...... 101 894 FACSIMILE TECHNICIAN ...... 112 801 CRYPTOGRAPHIC REPAIRMAN (DESIG 899 DIRECTOR REPAIRMAN, ELECTRICAL, NATED EQUIPMENT) ...... 101 HEAVY ANTIAIRCRAFT ARTILLERY...... 112 802 ARTILLERY MECHANIC, MINOR MAIN 901 MUNITIONS WORKER ...... 112 TENANCE ...... 101 903 SMALL ARMS WEAPONS MECHANIC...... 112 803 BUGLER ...... 102 905 MECHANIC, ENGINE, WHEEL VEHICLE 804 CAMOUFLAGE TECHNICIAN ...... 102 (GASOLINE) ...... H3 805 CRYPTOGRAPHIC TECHNICIAN ...... 102 906 MECHANIC, CHASSIS, WHEEL VEHICLE...... 113 807 CRYPTOGRAPHIC CODE COMPILER...... 102 907 MECHANIC, TURRET ...... 113 808 CRYPTANALYSIS TECHNICIAN ...... 102 908 MECHANIC, CHASSIS, TRACK VEHICLE...... 113 809 DECONTAMINATING EQUIPMENT 909 MECHANIC, ENGINE, TRACK VEHICLE...... 114 OPERATOR ...... i(p 911 AIRPLANE ARMORER ...... 114 812 HEAVY WEAPONS NCO...... 102 912 ELECTRICIAN, AUTOMOTIVE ...... 114 814 OPERATIONS NCO ...... 103 913 ARTILLERY MECHANIC, LIGHT ...... 114 815 ORDNANCE SUPPLY NCO ...... 103 914 ARTILLERY MECHANIC, HEAVY ...... 115 817 PONTONEER ...... 103 915 ARTILLERY MECHANIC, HEAVY ANTIAIR 819 COMMISSARY STEWARD ...... 103 CRAFT ...... 115 820 SUBSISTENCE NCO ...... 104 917 DIRECTOR REPAIRMAN, MECHANICAL, 821 QUARTERMASTER SUPPLY TECHNICIAN...... 104 HEAVY ANTIAIRCRAFT ARTILLERY...... 115 822 UTILITIES NCO ...... 104 918 FIRE CONTROL REPAIRMAN, LIGHT ANTI 824 MESS SERGEANT ...... 104 AIRCRAFT ARTILLERY ...... 115 825 MEDICAL SUPPLY NCO...... 104 919 CONTROL SYSTEM REPAIRMAN, HEAVY 826 AAF SUPPLY TECHNICIAN...... 105 ANTIAIRCRAFT ARTILLERY ...... " 6 832 MASTER GUNNER, ANTIAIRCRAFT...... 105 921 HEIGHT FINDER REPAIRMAN...... 116 19 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN Title PaSc SSN Title 922 INSTRUMENT REPAIRMAN, FIRE CONTROL 116 967 AIR TRANSPORTATION . TECHNICIAN ...... 123 923 WELDER, ARMOR PLATE ...... 116 968 MINE DETECTOR OPERATOR...... 123 924 BOMB SALVAGE TECHNICIAN...... 117 969 LINK CELESTIAL NAVIGATION TRAINER 925 AIRCRAFT ENGINEERING TECHNICIAN...... 117 MECHANIC ...... 123 926 MECHANIC, FUEL INDUCTION...... 117 970 LINK CELESTIAL NAVIGATION TRAINER 927 AMPHIBIAN TRANSPORTATION NCO...... 117 OPERATOR ...... 123 931 TRUCK DRIVER, HEAVY...... 118 973 CHIEF ARTILLERY MECHANIC ...... 123 932 SPECIAL VEHICLE OPERATOR...... 118 974 RADAR REPAIRMAN, AN/TPT (DESIG 933 INSTRUMENT LANDING EQUIPMENT NATED MODEL) ...... 124 MECHANIC ...... 118 978 ARTILLERY MECHANIC, LIGHT ANTIAIR- 934 AMPHIBIAN TRUCK DRIVER...... 118 CRAFT ...... 124 938 AAF GUNNERY INSTRUCTOR...... 119 979 CHEMICAL WARFARE MAN, GENERAL...... 124 939 AERIAL PHOTOGRAPHER-GUNNER...... 119 993 RADIO MECHANIC, PQ TARGET AIRPLANE.... 124 940 AERIAL PHOTOGRAPHER ...... 119 994 SERVO MECHANIC, PQ T -\RGET AIRPLANE. ... 124 941 CAMERA TECHNICIAN ...... 119 1076 OBSERVATION DRAFTSMAN ...... 124 942 RADIOSONDE OPERATOR ...... 119 1531 GUN CREWMAN, PACK ARTILLERY...... 125 945 PHOTOGRAPHIC LABORATORY TECH 1607 HEAVY MORTAR CREWMAN...... 125 NICIAN ...... 119 1645 RANGE SECTION OPERATOR. ANTIAIR 946 SEARCHLIGHT.NCO ...... 120 CRAFT ...... 125 948 RADAR MECHANIC, GROUND LORAN...... 120 949 AMMUNITION RENOVATOR ...... 120 1648 RADIO REPAIRMAN, AN/MRQ (DESIG 950 WIRE REPAIRMAN, VHF...... 120 NATED MODEL) ...... 126 951 RADIO REPAIRMAN, VHF...... 121 1684 AIRPLANE POWER PLANT MECHANIC 952 RADAR REPAIRMAN, GUN-LAYING EQUIP GUNNER ...... 126 MENT (DESIGNATED SET)...... 121 1685 AIRPLANE ELECTRICAL MECHANIC- 953 RADAR REPAIRMAN, REPORTING EQUIP GUNNER ...... 126 MENT (DESIGNATED SET) ...... 121 1736 LIGHT TANK CREWMAN...... 126 955 RADAR REPAIRMAN, AIRBORNE EQUIP 1766 RADIO OPERATOR, AN/MRQ (DESIGNATED MENT (DESIGNATED SET) ...... 121 MODEL) ...... 127 956 AIRPLANE CARBURETOR REPAIRMAN...... 121 1812 LIGHT WEAPONS NCO...... 127 957 AIRPLANE ELECTRICAL INSTRUMENT 1907 GYROSTABILIZER MECHANIC ...... 127 MECHANIC ...... 121 2601 ANTIAIRCRAFT ARTILLERY GUN CREW 958 AIRPLANE AND ENGINE ELECTRICAL AC MAN ...... 127 CESSORIES REPAIRMAN ...... 122 2736 MEDIUM TANK CREWMAN...... 128 959 AIRPLANE MECHANICAL INSTRUMENT 2750 AERIAL ENGINEER ...... 128 REPAIRMAN ...... 122 2756 RADIO OPERATOR AND MECHANIC, AAF...... 128 960 REMOTE CONTROL TURRET MECHANIC...... 122 2867 RADAR OBSERVER-MECHANIC, 961 AIRPLANE GYRO INSTRUMENT BOMBARDMENT ...... 129 REPAIRMAN ...... 122 2967 FLIGHT TRAFFIC CLERK...... 129 962 OPTICAL INSTRUMENT REPAIRMAN...... 122 964 AIRPLANE SUPERCHARGER REPAIRMAN...... 122 3601 ANTIAIRCRAFT ARTILLERY AUTOMATIC 965 MECHANIC, AUTOMOTIVE, WHEEL VE WEAPONS CREWMAN, SP...... 129 HICLE (THIRD ECHELON) ...... 122 3736 AMPHIBIAN TANK CREWMAN...... 129 966 MECHANIC, AUTOMOTIVE, TRACK VE 6709 TRAFFIC ANALYST, G...... 130 HICLE (THIRD ECHELON),...... 123 8709 TRAFFIC ANALYST, J,...... 130

20 5 Feb 46 TM 12-427 C3

SUPPLEMENTAL NUMERICAL LIST OF MILITARY OCCUPATIONAL SPECIALTIES

Code Page Code . Page 268 ACCOUNTANT...... 51 890 PHOTO INTERPRETER...... 112A 561 AIRCRAFT APPROACH CONTROLLER 977 RADIO SECURITY TECHNICIAN..... 124 GCA...... 72A 980 GRAVES REGISTRATION TECHNI 594 PERSONAL EQUIPMENT TECHNI CIAN...... 125 CIAN ...... 77 995 ROTARY WING MECHANIC (HELI 596 ROCKET CREWMAN...... 77 COPTER) ...... 125 599 RADIOTELEPHONE OPERATOR, FIRE 996 AIR TRAFFIC SERVICE TECHNICIAN. 126 CONTROL...... 77 1187 REPEATERMAN, FIXED PLANT. .... 126 637 INFORMATION CENTER EQUIPMENT 1274 PERSONAL AFFAIRS CONSULTANT.. 126 TECHNICIAN...... 82 £274 INFORMATION AND EDUCATION 646 TELEPHONE AND TELEGRAPH SPECIALIST...... 129 EQUIPMENT REPAIRMAN...... 82A 3766 RADIO OPERATOR, MARINE...... 130B 873 GUN CREWMAN, HEAVY ARTILLERY 9745 CAVALRY TROOPER...... 130B (Single Load)...... 112A

AGO 3006A 2OA 30 Jun 45 TM 12-427 C 2 Section IV Specifications for Military Occupational Specialties

AERIAL PHOTOTOPOGRAPHER (DESIG SUGGESTED SUBSTITUTES NATED EQUIPMENT) (004) 319 Construction Equipment Mechanic 477 Mechanic, Marine Engine Photogrammetrist AAF 660 Tank Mechanic, Minor Maintenance Stereocomparagraph Operator 905 Mechanic, Engine, Wheel Vehicle (Gasoline)' Multiplex Projector Operator 909 Mechanic, Engine, Track Vehicle Uses aerial photographs in the construction of planemetric and topographic maps, aeronautical AUTOMOTIVE MECHANIC (014) (SECOND charts, and controlled and uncontrolled mosaics. ECHELON) Makes mathematical computations in connection Airplane Target Motor Mechanic with the construction of tables and graphs to cor Automotive Equipment Mechanic (AAF) rect calculations for distortion in photographs and Electrician, Automotive (Second Echelon) stereographic displacements. Constructs control Motorcycle Mechanic (Second Echelon) boards upon which mosaics are assembled and makes Motor Transportation NCO. planemetric maps for use in constructing topo graphic maps with Stereocomparagraph or multi Inspects and performs first and second echelon plex projector equipment. organizational maintenance service and repairs on Must be familiar with conventional signs and sym gasoline powered military motor vehicles, includ bols used in military mapping. Must be able to ing motorcycles. interpret aerial photographs. Must have experience Examines vehicles for mechanical defects of in topographic drafting. power plant, body, or chassis features by visual inspection, road test, and by use of such testing SUGGESTED SUBSTITUTES devices as compression valve and fuel test gauges 076 Draftsman, Topographic and neon timing light. Checks such elements, as car 387 Cartographer buretor and ignition systems, brakes, wheel align ment, tightness of all body and chassis clamps and DIESEL MECHANIC (013) bolts, electrical connections, and proper lubrication. Using such auto mechanic's tools as pliers, screw Locomotive Diesel Mechanic drivers,. wrenches, gauges, punches, and hammers, Tractor Mechanic (Diesel) performs minor repairs and replaces defective or Inspects, tests, and performs field repairs and malfunctioning parts and units not requiring dis adjustments, unit replacement, or complete rebuild assembly of assemblies or subassemblies as defined ing of Diesel engines and accessory equipment in a in Army regulations and as specified by Table of mobile or fixed repair shop. Equipment for an Army organization. Visually inspects or uses such testing devices May also be required to perform first and second as test light and injector testing apparatus to deter echelon maintenance on power ground equipment mine causes of faulty operation. Locates trouble and Diesel or marine engines. and makes repairs and adjustments on timing gears, May repair dented fenders or bodies, touch up ignition, transmission, brakes, clutches, differentials, marred paint, patch or mend automobile upholstery, superchargers, and fuel injection systems. Using flush, drain, and solder leaking radiators, and such tools and equipment as auto mechanic's tools, change or patch tires. valve grinders, drill presses, and lathes, replaces Must have knowledge of construction and opera defective unit or subassemblies or completely tears tion of automotive engines and ignition systems. down, overhauls, and rebuilds unit or subassemblies. At supervisory level, is responsible for control Must have knowledge of the theory, construction, and coordination of motor maintenance or motor and operation of Diesel powered engines. transport activities.

AGO 283A 21 TM 12-427 30 Jun 45 C 2

SUGGESTED SUBSTITUTES SUGGESTED SUBSTITUTE 316 Automobile Serviceman 060 Cook 660 Tank Mechanic, Minor Maintenance BAND LEADER (020) LABORATORY TECHNICIAN V-MAIL OR Orchestra Leader MICROFILM (016) Directs rehearsals and conducts performances of Operates microfilm equipment or supervises the a military band. work of a V-mail or microfilm processing labo Prepares rehearsal schedules, selects and arranges ratory in which negatives are developed and paper music and inspects musical instruments and equip prints made by continuous or still projection. ment. Photographs documents in microfilm machine and May serve as noncommissioned officer in full processes negatives with chemical solutions. Makes charge of band or as. first assistant to a commis paper prints from negatives by exposing film, using sioned officer band leader. a continuous enlarger or still projector. Processes Must be able to arrange orchestrations and direct paper prints through chemical solutions and dries band when performing at military ceremonies. prints on a drying drum. Should be thoroughly familiar with wind and per Must have knowledge of mechanical equipment cussion musical instruments. and procedures used in the operation of a V-mail or microfilm station. Should have knowledge of BARBER (022) photographic chemistry and be able to judge Beautician whether film being produced and paper being Cuts and shampoos hair of military personnel. printed are of proper quality and to prepare proc ' Gives shaves and trims mustaches. essing solutions. Shapes neckline with comb and scissors and Civilian photographic experience in continuous shaves neck. Trims hair to proper length. May processing laboratory or equivalent training and give permanent waves, marcels^ and finger waves. experience desirable. j BLACKSMITH (024) SUGGESTED SUBSTITUTES 134 Laboratory Technician, Motion Picture Foreman, Blacksmith Heat Treater 152 Photographer Forging Press Operator Tool Dresser 945 Photographic Laboratory Technician Hammersmith Performs miscellaneous duties of forging, forge- BAKER (017) welding, heat treating of metals, and operation of Chief Baker drop hammers and power presses in a military Bakes bread and allied flour products, such as repair, boiler, or machine shop, to assist in accom rolls, cakes, pies, and pastries, in a fixed or mobile plishment of repairs to equipment and machinery. bakery. Requisitions supplies and maintains simple Dresses tools required in repairing machinery records. and equipment by sharpening and tempering. Weighs proper amounts of ingredients and mixes Forges metal articles and parts from iron or steel them, using an electrically powered mixing machine, in repairing or manufacturing machine parts and or kneads by hand. Places dough in proofing room tools. Forging operations include drawing, upset or rack to ferment. Cuts dough into uniform por ting, bending, twisting, punching, and welding. tions with dough knife. Shapes chunks into loaves, Operates furnaces and quenching and drawing places them in greased pans, and inserts them in oven. Regulates oven temperature by manipulating tanks for heat treatment of tools, springs, and other drafts or thermostatic controls. Removes baked forgings. May operate forging bulldozers and bolt bread. headers for quantity production of machine-bent Cleans all machinery and equipment. In a mobile and forged parts. bakery, aids in loading and unloading equipment, Equipment includes blacksmith's tools, anvils, digging oven pit and firing trench, and assembling forges, blowers, power and steam hammers, forging field ovens. machines, and bulldozers; heat treating, spring tem-

22 AGO 283A 30 Jun 45 TM 12-427 C 2

pering, and tool furnaces; bar-shears and spring- BLUEPRINTER OR PHOTOSTAT OPERATOR making machinery. (028) Must be familiar with coal or coke forges. Must be able to make medium and light machine hand Operates and services blueprint or photostat ma forgings. Should have knowledge of heat treat chines used to reproduce maps, charts, communica ment of steel. Must have knowledge of various tions, or other graphic matter. methods of shaping heated metal. Places material to be copied in frame beneath 'lens, adjusts illumination, places photographic SUGGESTED SUBSTITUTES paper in machine, times exposure, and operates 030 Boilermaker machine to develop prints. Dries and trims copies. 256 Welder, Combination

AGO 283A 22A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

SUGGESTED SUBSTITUTES SUGGESTED SUBSTITUTE 055 Clerk, General 111 Locomotive Fireman '105 Clerk-Typist 945 Photographic Laboratory Technician BRICKLAYER (034) Lays brick, tile, terra cotta. or other building BOILEKMAKER (030) blocks to construct walls, arches, partitions, and Boiler Inspector Foreman. Boilermaker other masonry structures. Boilermaker. Layer-out Punch and Shear Operator Binds and lays bricks or tile in course by im Overhauls locomotive boilers, tender?, and pres bedding in layer or mortar or cement and checking sure tanks and builds and repairs tanks, vats, or vertical and horizontal alignment of wall with other containers made of heavy steel in a locomo spirit level and plumb bob. Cuts bricks or blocks tive boiler or other repair shop. with bricklayer's hammer or with hammer and chisel to provide various size materials as needed. Patches, rebuilds, or replaces such parts as fire Shapes mortar joints between courses of bricks boxes, flue sheets, and flues in locomotive boilers, with jointer or trowel point. air and water tanks, and coal hoppers. Performs May clean finished wall with wire brush or acid such operations as laying out work on plates and to remove excess cement or mortar. cutting plates to size and shape, .punch-holes in Must be skilled in the use of such tools as mor plates for rivets or bolts, bending angle irons and tar trowels, bricklayer's hammers, jointers, squares, plates to desired radius, calking seams and rivet gauge lines, level, plumb bobs, rules, and various heads, fastening boiler tubes or flues into headers, templates used for arch construction. assembling and riveting or welding headers, tubes, and baffle plates. Inspects, tests, and examines boil SUGGESTED SUBSTITUTE ers to determine adequacy of repairs and fitness 214 Stonemason for service. Equipment includes air hammer, air and electric CARPENTER. HEAVY CONSTRUCTION (035) drill, oxyacetylene cutting and welding equipment; Bridge Inspector lay-out tools; nibbler, punches, and shears, pneu Bridge Builder Bridge Carpenter Dock Builder matic riveters and grinders, swaging and expand Bridge Foreman ing machinery, boiler test apparatus. Must have knowledge of the construction and Builds and repairs wooden structures made from functioning of various types of boilers. heavy timbers and planking. Performs such heavy timber work as capping, SUGGESTED SUBSTITUTE shoring, bracing, and underpinning. Constructs 201 Sheet Metal Worker flumes, caissons, bridges, trestles, cofferdams, re taining walls, supports for bridge forms, and other BRAKEMAN, RAILWAY (033) wooden structures. Switchman. Railway Uses carpenter's tools, broadax, adz. pneumatic Train Crewman (Designated Type) (AAF) drills, and drift bolt drivers. May assemble, disassemble, load and unload Operates as member of a railroad train crew bridge sections, pontons and other component parts receiving and transmitting signals to locomotive of temporary bridges coincident to their transporta engineer relative to train movement. tion. May supervise or inspect construction and Signals locomotive engineer to stop or move repair work. train. Throws track switches at points where no switch tender is stationed. Couples and uncouples SUGGESTED SUBSTITUTES cars to make and break-up trains. Sets brakes by 050 Carpenter, General hand on cars not coupled to engine or train, 202 Carpenter^ Ship Switches cars from track to track in railroad yard in accordance with written orders concerning MEAT CUTTER (037) make-up of trains. Stakes flags and flares in front Butcher of and behind train in emergencies. Foreman, Butcher Must be familiar with railroad operating and Cuts whole carcasses, such as beef and lamb, into safety rules, semaphore signals, timetables, and halves, quarters, or smaller cuts. Prepares meat for train orders. Must be familiar with the principles distribution to units from a commissary or refrig of air brake operation and connecting and discon eration plant. necting air hose. Makes finer cuts to fill weight requirements of MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL various units. Balances deliveries to distribute SUGGESTED SUBSTITUTES desirable cuts evenly. Weighs and stores meat. 098 Instrument Repairman, Nonelectrical Uses knives, hand saws, and cleavers. 686 Airplane Instrument Mechanic Must know methods of cutting meat to avoid waste. Must know which cuts are adapted to a CAMERAMAN, MOTION PICTURE (043) specific purpose. Operates and performs minor maintenance on a SUGGESTED SUBSTITUTE motion picture camera and associated equipment in studio, maneuver, or combat assignments involv 060 Cook ing the production of motion pictures for training CABLE SPLICER, TELEPHONE AND TELE or intelligence purposes. GRAPH (039) Determines most effective angle of view from Cable Repairman which to photograph given action, adjusts and Maintains military wire communication system focuses camera, and follows action through view by splicing insulated wires to join multiple con finder, taking necessary shots. Performs preventive ductor cables in order to preserve the continuity maintenance on camera by inspecting, dusting, and and insulation of eacb conductor. oiling equipment. Makes minor repairs and simple Completes splices by drying out moisture with replacement of parts such as gears, gates and paraffin or desiccant, wrapping according to method latches, using screw drivers and pliers. used, and covering with lead sleeves. Tests the Must understand the uses, advantages, and limita sheath by means of gas or air under pressure; tests tions of various types of cameras used by the conductors for continuity and insulation by means Army, and be able to substitute, improvise, and of buzzer system or other test instruments after make effective use of accessories. Must understand splice has been made. Protects splices from moist basic principles of film editing and directing. ure when work is suspended before completion; SUGGESTED SUBSTITUTES splices and vulcanizes rubber covered military cable. 152 Photographer Uses variety of electrician's tools and equip 285 Cameraman, Animated Motion Picture ment. CANVAS COVER REPAIRMAN (044) Must be competent to work with all types of military or civilian cable, including lead or rubber Canvas Worker coated wire. Repairs all types of canvas equipment such as seat covers, awnings, tents, boat sails, tarpaulins, SUGGESTED SUBSTITUTES gun and truck covers in an Army repair jshop. 238 Lineman, Telephone and Telegraph Sews, patches, and darns, using needles and 641 Field Lineman thread' or sewing machine. Lays out canvas and 714 Mine Supply Maintenance Technician cuts off lengths using shears or electric cutting ma chine. May hand sew grommets, using mallet, CAMERA REPAIRMAN (042) punch, and hardwood block. Sews galvanized iron Equipment Repairman, Motion Picture rings to edges of holes, using a sailmaker's palm, Laboratory Equipment Repairman needle, and linen thread. Attaches ropes and metal Photographic Equipment Maintenance Man fittings to canvas by hand sewing. Inspects, cleans, tests, and repairs ground, aerial, or motion picture cameras and darkroom equip SUGGESTED SUBSTITUTE ment. 609 Leather and Canvas Worker Dissembles camera, using small screw drivers; and cleans lens, removing all dust and grit. Tests CAR, CARPENTER, RAILWAY (046) and adjusts shutter and checks freedom of moving Cabinetmaker parts. Mends light leaks in bellows. Cleans interior Foreman, Car Carpenter and exterior and lubricates moving parts with light Pattern Maker, Wood (Railway) oil. Uses precision hand tools to rebuild and main Upholsterer tain in service the mechanical parts of still and Constructs, assembles, and repairs wooden and motion picture cameras. steel freight and passenger cars, lays out and May clean and make minor adjustments to opti builds wooden frames from blueprints or sketches, cal instruments. and cuts and shapes wood in fabricating and re Civilian experience in repair of cameras or op pairing wood parts in a military railway repair tical instruments desirable. shop. SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Makes and hangs doors, lays floors and roofing, reamers, and rivet dies and tongs; lay-out tools and fits siding to railroad cars. Operates wood such as straight edge, rule, dividers, scribers, and working machinery and uses carpenter's hand tools squares. Operates such machine tools as drill press, for trimming and shaping wood patterns. Deter metal punch, power shears, emery wheel, and hy mines whether finished patterns are in exact ac draulic press. cordance with prescribed dimensions. Reinforces Must be able to work from blueprints and writ joints, glues joints, and clamps until dry. Replaces ten or oral specifications. Must have knowledge of worn padding, springs, and seat covers. the principles of railway car design and construc Equipment includes woodborers, jointers, mold- tion and operation of the various parts. ers, planers, and sanders, rip, cross-cut, band, and scroll saws, pattern maker lathe and trimmer and SUGGESTED SUBSTITUTES carpenter's and cabinetmaker's hand tools, sewing 112 Locomotive Mechanic machines and canvas working equipment. 342 Master Mechanic Must be able to work from blueprints or sketches. Must know mechanics of fitting joints, laying floors, CARPENTER, GENERAL (050) and fitting sidings. Must be familiar with car Cabinetmaker p Carpenter, Construction penter's folding rules and squares. Must know Carpenter (AAF) Packing Case Maker various types of lumber. Performs a variety of carpenter tasks in connec SUGGESTED SUBSTITUTES tion with the construction and repair of buildings, drainage systems, waterworks, airports, motion pic 050 Carpenter, General ture sets, and related structures. 202 Carpenter, Ship Repairs and replaces stringers. Builds frames, TRAFFIC MAN, RAILWAY (047) lays floors, and puts up partitions. Erects concrete forms and scaffolds. Installs doors and windows. Car Distributor, Railway Erects and installs guard rails. Supervises sidetracking, switching, and distribu Packs and crates material and builds bracing tion of railway cars and trains along haulage ways and framing to hold boxes and crates in place in of a military railroad system. freight cars, ships, airplanes, or other means of Maintains records of location and movement of transportation. Constructs special devices for trans railway cars, capacity of yards and sidings, and portation of acids, explosives, and other delicate directs movement of cars as required. items. Must have knowledge of rules and regulations Must be able to work from blueprints and draw governing operation of military railways. ings. Should be able to construct cases and have SUGGESTED SUBSTITUTE knowledge of corrosion proof packing. 058 Conductor, Railway SUGGESTED SUBSTITUTE 202 Carpenter, Ship CAR MECHANIC, RAILWAY (048) Airbrake Mechanic CLERK, GENERAL (055) Brake Inspector, Railway Car Account Clerk File Clerk Foreman, Car Mechanic Audit Clerk Historical Clerk Railway Mechanic, General Bookkeeper Librarian Performs various types of mechanical repair Clerk (Non typist) (AAF) Mail Orderly work in- a military railway repair shop on freight Dispatcher-Clerk (Crew) Processor and passenger cars in connection with the main Dispatcher-Clerk, Motor Vehicle Proofreader tenance of railway rolling stock. Ditto or Mimeograph Ma- Record Clerk Repairs or replaces broken or defective parts of chine Operator ' Statistical Clerk railway cars, including under frames, wheel trucks, Performs a variety of clerical tasks in connection couplers, and draft gears. Performs such opera with the operation of a military unit. tions as cutting, drilling, reaming, riveting, and Compiles and files reports and statistics. Tabu calking. Straightens, reinforces, and repairs car lates and posts data in record books. Takes tele frames and members. Inspects and packs car. jour phone messages and gives information to callers. nals. Inspects and repairs or replaces air brakes Checks calculations and makes simple bookkeeping and air brake operating equipment. entries. Sorts and distributes mail. Duplicates or Equipment includes air hammer, air drill, air ders, memoranda and bulletins using mimeograph jack, and^drill bits. Drill bits include punches, and ditto machine^ 25 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

Must be familiar with military office procedure Must be able to supervise construction workers and must understand military correspondence and such as carpenters, construction laborers, bricklay filing. ers, structural steel workers, riggers, and construc (See Clerk-Typist 405 for jobs requiring typing.) tion machine operators. Must be familiar with engi neering and construction principles and be able to POSTAL CLERK* (056) give technical directions. Must be able to read blue Performs various postal duties in a military post prints and specifications. office. SUGGESTED SUBSTITUTES Receives, sorts, and distributes all classes of mail. Insures and registers mail. Issues and cashes postal 035 Carpenter, Heavy Construction money orders, war savings stamps, and war bonds, 050 Carpenter. General and sells stamps and other postal supplies. Keeps COOK (060) accurate record of all transactions and is respon sible for all funds and supplies in his possession. Prepares food for the personnel of a military Should have experience in post office work as organization, using a daily menu as a guide. postal clerk or carrier, and have knowledge of Seasons and cooks meats, soups, desserts, vege postal laws, regulations, and forms pertaining to tables, sauces, and gravies in accordance with mili handling of all classes of mail. tary methods of food preparation. Must be familiar with regulations governing *The use of this MOS applies specifically to duties under kitchen sanitation. Must be capable of setting up the jurisdiction of an Army Postal Officer and is not in and operating field range. tended to apply to mail distribution duties being performed in an organizational unit. SUGGESTED SUBSTITUTE

SUGGESTED SUBSTITUTES 017 Baker 055 Clerk, General COPPERSMITH (061) 405 Clerk-Typist Fabricates and repairs kettles, tanks, coils, roof CONDUCTOR, RAILWAY (053) gutters, tubing, fittings, and other similar objects Supervises operation of railway freight and pas in a military pipe and tin shop or other similar senger trains and is responsible for prompt move unit. ment of freight and passengers to destination. Performs soft metal fabrication, tube bending, Supervises freight and passenger train crews com brazing, and babbitting. Works with soft metals prising brakemen, engineers, firemen, and switch such as 'copper, tin, zinc, and brass. men. Receives and handles bills of lading and Equipment includes babbitting and brazing fur written orders. Supervises make-up and removal of naces, snipers, shears, bending brakes, mallets, and freight at wayside destinations. soldering tools. Must have knowledge of standard operating rules Must have knowledge of soft metal treating proc and regulations governing operation of military esses, including brazing of parts. railways. Must be familiar with semaphore signals SUGGESTED SUBSTITUTES used by railroads. 164 Plumber SUGGESTED SUBSTITUTE 201 Sheet Metal Worker 033 Brakeman. Railway CRANE OPERATOR (063) FOREMAN, CONSTRUCTION (059) Gantry-Crane Operator Construction Technician (AAF) Hoist Operator Foreman, Pipe-Line Construction Operates an electric, gas, steam, or Diesel-pow Supervises the construction or repair of build ered crane, or Gantry-crane fixed or mounted on a ings, drainage systems, airports, water works, cul car or Gantry-crane bridge toi lift and move heavy verts, and related structures. objects from place to place. Interprets blueprints, sketches, and written or Engages clutch, manipulates throttle, and presses verbal orders. Determines work- procedure and as buttons and brake to move and stop crane, to rotate signs duties to various military specialists. Super crane on chassis, to raise and lower crane to run vises excavating, grading, bracing, form building, Gantry-crane towers along track, to move crane and backfilling. Supervises unloading and distribu on bridge, or to raise and lower the load line and tion of construction materials. Inspects completed objects attached to it. work. Must coordinate arm and foot movements in op- 26 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES erating crane levers and pedals with judgment of May perform simple carpentry work, involving distances. Must be able to perform driver mainte the cutting and shaping of wood parts for decks nance activities on crane. and life boats. Should know simple navigation, splicing, knots, SUGGESTED SUBSTITUTE rigging, semaphore, and use of carpenter's tools. 064 Power Shovel Operator DENTAL LABORATORY TECHNICIAN (067) POWER SHOVEL OPERATOR (064) Dental Mechanic Operates and performs first echelon maintenance Fabricates and repairs partial and full dentures on Diesel, gas, or steam power shovel equipment to replace missing teeth. mounted on crawler-tread or railway car to excavate Makes plaster-of-paris casting from wax impres or move material. sion and sets artificial teeth individually in wax, Operates hand levers such as swing, hoist, crowd manipulating articulator to bring castings of upper stick, and travel to turn unit on chassis, hoist dipper and lower jaws together to ascertain that each tooth boom upward and downward, force crowd stick is properly set. Processes vulcanite and plastic ma into material, and actuate caterpillar treads for terials and completes denture by hand trimming forward and backward motion. Operates foot levers with knife, file, or sandpaper and polishing on a to brake turning of unit to stop vertical movements buffing lathe. Makes bridges, splints, metal clasps, of dipper boom and to brake forward or backward crown, and inlays by making molds for dentures motion of unit. Using mechanic's hand tools as and casting and soldering parts according to speci sembles and disassembles such attachments to the fications. Repairs broken dentures and bridges. May shovel as pile driver, ditcher, crane, clam shell develop X-ray pictures and keep records. bucket, and dragline. Cleans shovel, greases steel cable and moving parts, cleans and oils pulley SUGGESTED SUBSTITUTE blocks, tightens loose bolts and nuts. Adjusts fric 855 Dental Technician tion clutches and replaces worn or broken parts. DISPATCHER, RAILWAY (069) Checks oil, water, and fuel, and makes adjustments to carburetor and governor. Directs movements of trains over a military rail May drive truck and trailer to haul shovel to road within a prescribed area such as a division. work site. Maintains records of train movements, including time of arrival and departure from stations. Re SUGGESTED SUBSTITUTE routes or reschedules trains during emergencies 063 Crane Operator and reports all accidents to trains, damages to roads, and failures to meet schedules. Drafts written SEAMAN (065) instructions to engineers and conductors. Maintains Able Seaman Cargo Foreman communication with other dispatchers by telephone Assistant Barge Captain Chief Quartermaster or telegraph. Dispatches wreck train and crew to Barge Captain Deckhand railroad sections affected by wrecks, and aerial Boatswain Motor Boat Operator bombardment. Boatswain's Mate Quartermaster Must have knowledge of rules and regulations governing operation of military railways. Performs a variety of deck duties aboard mine planters, tugs, lighters, barges, small boats, emer SUGGESTED SUBSTITUTES gency rescue boats, repair ships, tow boats, crash 047 Traffic Man, Railway boats, transports, freighters, and passenger ships. 058 Conductor, Railway Handles lines, ropes, and hawsers when docking 265 Yardmaster or anchoring ship. Fills fuel and water tanks. Oper ates and assists in maintaining deck machinery of . DRAFTSMAN (070) . ship to which assigned, such as booms, capstons, Tracer winches, anchor windlass, lifeboat davit, and ramp. Prepares clear, complete,.and accurate working Steers ship under supervision according to compass plans and detailed drawings from sketches or engi bearing and rules of navigation. Stands watch on neer's notes for use in connection with specifications large ship, reporting approaching ships and haz for miscellaneous Army projects. ards to navigation. Signals to other ships and shore Makes proposed drawings and plans from oral stations, using semaphore signals or blinker lights. or written instructions. Makes final sketches, check Cleans deck and quarters and paints hull, including ing dimensions of parts, materials to be used, and scraping and sanding old paint. relation of parts to the whole. Makes- finished de- 27 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL tailed drawings to scale. SUGGESTED SUBSTITUTES Must be experienced in the use of drafting in 264 X-ray Technician 409 Medical Technician struments. Should be familiar with paints and 283 Athletic Instructor 861 Surgical Technician washes for coloring drawings. Should have general -knowledge of engineering DRAFTSMAN, STRUCTURAL (074) practices, machinery, materials, and mathematics Prepares detailed drawing of structures in con to complete drawings. Familiarity with blueprints nection with military construction projects. and photostat apparatus helpful. Sketches proposed plans for bridges, columns, SUGGESTED SUBSTITUTES docks, and buildings, working from field notes, 071 Draftsman, Mechanical specifications, models, and other drawings. Prepares 074 Draftsman. Structural finished drawings to scale of bridge trusses, plate 075 Draftsman, Electrical girders, roof trusses, trestle bridges, columns, dock 076 Draftsman, Topographic piles, bracing, beams, floors, and walls. Uses standard drafting tools and equipment. DRAFTSMAN, MECHANICAL (071) Must have a working knowledge of structural Draftsman, Railway principles, engineering practices, and mathematics. Prepares detailed drawings of machines and SUGGESTED SUBSTITUTES equipment in connection with the construction or 070 Draftsman repair of military equipment or mechanical devices. 071 Draftsman, Mechanical Sketches proposed mechanical parts and devices, 075 Draftsman. Electrical working from job orders, specifications, models, and other drawings. Prepares finished detailed DRAFTSMAN, ELECTRICAL (075) drawings to scale of parts for trucks, construction equipment, rail equipment, engines, weapons, and Prepares working plans, detail drawings, and wir other military equipment, and for heating, venti ing diagrams from rough or detailed sketches and lating, and refrigeration systems. Enlarges draw notes, for the erection, installation, and wiring of ings, using proportionate squares. electrical machinery, equipment, and fixtures for May design simple mechanical parts. Uses stand military power plants, buildings and manufacturing ard drafting tools and equipment. Must have a work units. ing knowledge of machines, engineering practices, Prepares proposed drawings and plans followed and mathematics. by final sketches, checking dimensions of parts, materials to be used, and relation of various parts SUGGESTED SUBSTITUTES to whole. Inks in all lines and letters on pencil 070 Draftsman drawings. Makes finished designs from final 074 Draftsman, Structural sketches. 075 Draftsman, Electrical Uses standard drafting tools and equipment. Should have general knowledge of engineering PHYSICAL THERAPY TECHNICIAN (072) practices, machinery, materials, and mathematics to Assists in administering prescribed physiothera- complete drawings. Familiarity with photostat and peutic treatments by means of massage, electrother blueprint machines helpful. apy, hydrotherapy, thermotherapy and remedial gymnastics in the treatment of various muscular SUGGESTED SUBSTITUTES and physical disorders. 070 Draftsman Instructs patients in gymnastics. Administers gal 071 Draftsman, Mechanical vanic, heat, ultra violet and infra red ray treatment, 074 Draftsman, Structural hot baths, whirlpool, and other water remedies. Ap plies vibrator, massage, and other mechanical DRAFTSMAN, TOPOGRAPHIC (076) devices to patient's body as prescribed. Applies Prepares topographical maps from any original and removes casts and, strappings. source, such as surveyor's notes, aerial photographs, Maintains records of attendance and appoint or other maps. ments, and makes minor repairs to electrical equip Makes corrections denoting changes in configura ment. tion on topographical maps as indicated by aerial Must have thorough knowledge of physical ther photographs of the same area. Uses Army conven apy procedures and treatment obtained through tional signs in the preparation of military maps, practical training and experience in a hospital or mosaics, sketches, and overlays. other institution. Uses standard drafting tools and equipment. 23 12 Apr 45 TM 12-427 C 1 PHYSICAL THERAPY TECHNICIAN (072) scotch douche, packs, tonic showers, removes casts and strappings and applies bandages. Assists in administering prescribed physical Assists in maintaining records of attendance and therapeutic treatments by means of massage, electro appointments, and makes minor adjustments on therapy, hydrotherapy, phototherapy, and remedial electrical equipment. gymnastics in the treatment of various muscular and Must have knowledge of physical therapy pro physical disorders. cedures obtained through on-the-job training and Prepares patient and adjusts apparatus in prepa experience in a hospital or other institutions. ration for administering such treatments. Under SUGGESTED SUBSTITUTES the direction of an officer administers electric light 283 Athletic Instructor cabinet bath treatments, and certain other hydro- 409 Medical Technician therapy procedures including sitz bath, sprays, 861 Surgical Technician

AGO 174A 28A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Must have knowledge of United States military 633 Fire Control Electrician, Antiaircraft (Auto maps and symbols and be able to interpret accu matic Weapons) rately aerial photographs. Must be familiar with 635 Searchlight Electrician the technique of maintaining a field operations map. Familiarity with foreign military maps and symbols MARINE ENGINEER (080) desirable. Chief Marine Engineer Supervises the operation of ship's engine room. SUGGESTED SUBSTITUTES Stands watch in engine room and supervises en 070 Draftsman gine room crew in operating engines, pumps, in 387 Cartographer jectors, condensers, boilers, and other mechanical, electrical, and sanitary equipment. Controls speed POWERHOUSE ENGINEER (077) of power equipment and checks correct water level Supervises the operation and maintenance of an in boilers. Keeps an operating log. Supervises the electric power or lighting plant. repair and maintenance of engine room equipment. Supervises personnel engaged in operating gas Makes small engine parts, using machinist's hand or Diesel engines, boilers, turbines, generators, tools. switchboards, transformers, and other power plant Must know the operation of steam, Diesel, or equipment and machines. Assigns duties, checks gasoline ship engines. operating conditions, inspects equipment, and keeps ENGINEMAN, OPERATING (081) operating records. Directs the storing of coal, gas, Air Compressor Operator Operator, Gas Dispenser and oil. Supervises maintenance personnel in clean Engineman, Diesel Winch Mechanic ing, adjusting, repairing, and replacing parts of machines and electrical equipment. Operates and maintains gas or Diesel engine and auxiliary equipment used for generating power. Must have experience in steam generation and Makes preoperating inspection for amount of gas electrical switchboard operation. or oil in fuel tank, amount of oil in crankcase, SUGGESTED SUBSTITUTES water level in battery, fan belt, ignition wiring, and 078 Electrician engine mounts. Starts engine, using electric starter 082 Stationary Engineer or hand crank. Observes ammeter, oil gauge, rpm 084 Stationary Fireman indicator, and temperature gauges during operation and regulates speed upon instructions from super ELECTRICIAN (078) visor. Makes post-operating inspection similar to preoperating inspection. Tightens hose connections, Installs, tests, and repairs electrical fixtures, elec motor mounts, and other engine parts. Cleans and trical apparatus, electrical control equipment, and adjusts spark plugs, carburetor, and fuel injector wiring used in connection with radio, communica and lubricates equipment. Operates and makes mi tion, light and power systems of buildings, or nor repairs to air compressors, pumps, controllers, other military projects. reverse and reduction gears, generators, hand and Follows blueprints, sketches, and specifications power winches, and concrete mixers. Uses mechan in installing and repairing panel boards, circuit ic's hand tools to replace packing in pumps, adjust breakers, outlet boxes, switch boxes, pull boxes, and controllers, clean gear boxes, tighten wire connec other concealed equipment. Measures, cuts, threads, tions, clean commutators, replace brushes and worn and bends conduit used to connect outlets, panels, or damaged parts, including spark plugs, injectors, and boxes. Pulls wire through conduit by means of brakes, and drums. steel snake. Splices wire, by removing insulation with knife or cutting pliers, twists bare wires to SUGGESTED SUBSTITUTES gether, and solders and tapes connection. Hangs 014 Automotive Mechanic (Second Echelon) lighting fixtures and connects them to wiring sys 839 Marine Engineman tem. Tests wire circuits for continuity, using battery with light and bulb connection. STATIONARY ENGINEER (082) May test and repair electric motors and automatic Operates and maintains stationary steam engines starting and stopping devices. supplying power and heat used in machine shops, Uses electrician's hand tools and instruments. laundries, refrigeration plants, and power plants. Supervises personnel engaged in firing and main SUGGESTED SUBSTITUTES taining steam boilers and operating auxiliary power 571 Electrician, Harbor Defense equipment. Checks operating conditions, inspects 579 Casemate Electrician operating equipment, makes minor adjustments to (52009S O——44———3 29 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL equipment, and keeps operating records of hours of HORSEBREAKER '' (093 ) operation and fuel consumed. Foreman, Horse Trainer Supervises the cleaning, chipping, and rebuild Horse Trainer ing of boilers and fire boxes, and the cleaning and Trains horses and mules to bridle and saddle in maintenance of auxiliary equipment. a remount depot, squadron, or troop, for issue to Must know safety regulations governing boiler and use by mounted units. operation. Trains horses and mules for single, double, or SUGGESTED SUBSTITUTES multiple hitch work and pack carrying. Trains ani 077 Powerhouse Engineer mals to recognize commands and follow them. 084 Stationary Fireman May-supervise other horsebreakers, teamsters, and stable orderlies in feeding, handling, training, con STATIONARY FIREMAN (084) ditioning, and supplying horses and mules. Uses such leather equipment as halter, bridle, Tends, feeds, cleans, and maintains steam pres longe, and saddle. sure in a portable, semiportable, or fixed boiler Must know habits and care of horses and mules, used for supplying heat or steam to power equip and be capable of riding and breaking untrained ment, an industrial process, or a building. animals. Uses mechanical stoker, chain grate, or hand shovel to place fuel, such as coal, coke, oil, or gas SUGGESTED SUBSTITUTES ' in fire box. Spreads fuel evenly and pokes fire to 235 Teamster obtain maximum heating value. Regulates drafts 710 Stable Sergeant and fuel supply to maintain required steam pres 713 Packmaster sure, which is indicated on a gauge. Maintains water HORSESHOER (094) in boiler at required level. Introduces additional water by manipulating valves to control operation Shoes Army horses and mules to protect feet of a water feed pump. Removes ashes and clinkers from breaking, in such a manner as to interfere from fire box, using bars, shovels, and wires. as little as possible with the natural gaits of the Should know purpose and operation of such de animal. vices as safety valves, steam and water gauges, Makes preliminary examination of the animal as safety cocks, water feed pumps, and forced or in to gait, conformation of legs, and size, shape, and duced draft fans. general condition of feet to determine the correct method of shoeing. Removes old horseshoe care SUGGESTED SUBSTITUTES fully, using clinch cutter and pinchers, and avoids 111 Locomotive Fireman injury to the .hoof. Prepares hoof for shoeing by 117 Marine Fireman trimming and leveling the sole, using farrier's knife and horseshoer's rasp. Estimates size and weight GENERATOR SWITCHBOARD OPERATOR of horseshoe to be used and reshapes to fit indi (092) vidual hoof by heating in forge and hammering Operates a generator switchboard in an electric to desired conformation on the anvil. Makes trial generating plant. fittings when horseshoe is cold. Attaches horseshoe Operates feeders, switch gear, and auxiliary to hoof by driving horseshoe nails through the sole equipment of an electric generating plant by remote of hoof in such a manner as to protrude through control. the side wall surface. Cuts end of nails close to Watches switchboard dials continually during an wall of hoof, using clippers, and secures horseshoes assigned shift. Connects and disconnects generating by clinching end of nails. Performs other black- units to and from the line, regulating the output smithing work such as repairing or making metal according to the demand for power. Makes the parts used in the organization. switching changes necessary to connect the gener Uses such tools as anvil, clinch cutter, portable ators with the various power feeders. Keeps a rec forge, hammers, farrier's knife, fullering iron, cut- ord of all switching operations and regular readings . ting nippers, farrier's pinchers, hoof-parer, tongs, of the output of the generators. horseshoer's rasp, pritchel, and vise. Must know correct procedure to follow in cases Must be able to relieve pressure on injured or of emergency. sensitive hoof areas and to correct faulty gaits in animals by corrective shoeing. In exceptional cases, SUGGESTED SUBSTITUTE may be required to hand-forge1 a shoe from an 184 Substation Operator iron bar. 30 30 Jun 45 TM 12-427 C 2

CENTRAL OFFICE TECHNICIAN (095) Must be able to use a wide variety of electrician's hand tools and testing equipment including side- Frameman, Telephone and Telegraph cutting pliers, wire cutters, brace and bit. saw, line Insideman, Telephone man's belt, safety belt, and testing set. Switchboard Installer-Repairman, Manual Must be able to read wiring diagrams, and must Installs, tests, and maintains manual telephone know all common troubles to be found in operation and auxiliary equipment used in connection with of a telephone circuit. a military central office or headquarters. Assembles and installs manual switchboard in SUGGESTED SUBSTITUTES cluding cable racks, distributing frames, power 238 Linemen, Telephone and Telegraph panels and other complementary equipment. Places, 641 Field Lineman fans out, and solders cables on terminal strips, and places and removes cross connections. Diag INSTRUMENT REPAIRMAN, NONELECTRICAL noses trouble and makes repairs or adjustments (098) such.as soldering connections, replacing fuzes, re sistance lamps and other defective parts. Performs Weather Instrument Technician routine tests and maintenance on items such as Maintains and makes repairs on sensitive non relays, lamps, jacks, cords, plugs, repeater coils, electrical instruments and apparatus used for meas and other equipment for proper functioning of a uring, testing, recording, and other related scientific manual telephone exchange. Maintains heat coils operations and observations. and carbon block protectors. Periodically inspects and cleans such instruments Uses electrician's hand tools such as soldering as compasses, clinometers, barometers, hand levels, iron, burnishing tool, wrenches, pliers, cutters, ham thermometers, surveying instruments,. theodolites, mers- and saws. Uses test devices such as volt and telescopes, binoculars, and other optical instru meters, ohmmeters, hydrometers, picks and spring ments. Repairs damaged or malfunctioning instru tension gauges. ments with the aid of such small hand and bench Must be familiar with execution of service or tools as pliers, hammers, tweezers, calipers, screw ders. Must be able to read and understand cir drivers, micrometers, precision lathe, sensitive drill, cuit diagrams. and lapping and polishing machines. Disassembles intricate mechanisms, repairing or replacing worn SUGGESTED SUBSTITUTES: or defective parts; reassembling and making preci 115 Automatic Telephone System Maintenance Man sion adjustments. 384 Installer-Repairman, Toll, Tp & Tg Should have knowledge of the principles of me chanics and physics. INSTALLER-REPAIRMAN, TELEPHONE AND TELEGRAPH (097) SUGGESTED SUBSTITUTES . 381 Watch Repairman Aircraft Warning Plotting Board Installer- 686 Airplane Instrument Mechanic Repairman 922 Instrument Repairman, Fire Control Installs, maintains, and repairs military telephone 957 Airplane Electrical Instrument Mechanic and telegraph station equipment, including tele phone subsets, telegraph instruments, protectors STRUCTURAL STEEL WORKER (100) and key switching equipment. Installs telephone substation equipment such as Riveter, Pneumatic telephones and bells, using field or permanent type Works as member of group of enlisted specialists equipment. Strings wires and installs cable and raising and placing fabricated structural steel mem junction boxes, and tests newly installed lines for bers such as girders, columns, and plates, and unites continuity, clarity, and volume. Using testing sets, them permanently to form a structure. locates defective equipment. Tightens loose connec Sets up and braces hoisting equipment for rais tions and replaces worn wires and broken or de ing and placing structural steel. Rigs hoisting equip fective parts. Inspects poles and tests for cable ment with pulleys, ropes, and cables. Lashes, troubles, using climbing irons and body tools. Per hitches, and hooks ropes, wire cables, chains, and forms overhead installation, construction, and main slings to hoist structural steel into place for erect tenance work. Makes shop repairs on rubber cov ing and setting. Shifts, fits, and sets structural steel. ered cable, using vulcanizing equipment. Bolts structural steel members together. Drills holes

AGO 283A 31 TM 12-427 30 Jun 45 C 2

in structural steel; reams out holes for bolting and Must know how to prevent shrinking, fading, and riveting. Chips away rough surfaces on concrete and excessive weakening of textiles. steel; calks steel seams and joints. Unites steel SUGGESTED SUBSTITUTES members by inserting rivets in holes and holds rivets in place while forming rivet heads. 102 Foreman, Laundry Equipment includes oxyacetylene torch, wrenches, 104 Laundry Maintenance Mechanic drift pins, mauls, air hammer, forge, tongs, ham mers, pliers, gloves, and goggles. LAUNDRY MAINTENANCE MECHANIC (104) Must be able to work from rough diagrams and Foreman -Mechanic, Laundry Laundry Mechanic sketches and oral and written instructions. Installs, adjusts, services and repairs mechanical SUGGESTED SUBSTITUTES equipment used in fixed or mobile laundry units. 030 Boilermaker Installs laundry machines, such as washers, ex 201 Sheet Metal Worker tractors, tumblers, and pressers, and power units, including high pressure steam boiler (100 Ibs. FOREMAN, LAUNDRY (102) sq. in.), electric or gasoline motors, or oil fired equipment according to sketches and blueprints. Laundry Technician (AAF) Uses plumber's, pipefitter's, steamfitter's, carpen Supervises and instructs personnel in the opera ter's, and general mechanic's tools to .make water, tion of a fixed or mobile laundry unit. In a mobile steam, or pipe connections and repairs. unit, supervises lay-out of trailers and preparation Lubricates operating mechanisms of all equip for operation. ment, using oil containers or pressure grease guns. Estimates requirements and requisitions all laun Determines extent to which any part needs repair. dry supplies. Supervises the preparation of bleaches, Repairs laundry machines by soldering and weld soaps, starches, and cleaning fluids. Instructs per ing, using acetylene and low amperage electric sonnel in operation of such laundry equipment as welders. washers, extractors, and tumblers. May cut, bend, and install sheet metal, using May supervise sterilization operations. sheet metal worker's tools. Must know rnethods of washing, scouring, and dry cleaning of military clothing and equipment SUGGESTED SUBSTITUTES such as woolen blankets, uniforms, and overcoats. 121 Utility Repairman SUGGESTED SUBSTITUTES 164 Plumber 341 Shop Maintenance Mechanic 104 Laundry Maintenance Mechanic LAUNDRY MACHINE OPERATOR (103) PHOTOLITHOGRAPHER (107) Draftsman, Lithographic Chief Operator, Sterilizer Foreman, Lithographer Tumblerman Lithographer, General Washman Operates one or more power-driven machines Lithographer, Photo Transferer Lithographic Engraver used to launder clothing and equipment for indi Photographer, Copy Cameraman viduals and medical or salvage repair units in a Photographer, Photoengraving fixed or mobile laundry. Receives soiled clothing and equipment from Photographs military topographical maps and the marker and places it in washing machine. Re other documents and transfers the pattern or image moves cleaned clothing from washer and places it thus produced to zinc lithographic plates which into centrifugal extractor for the preliminary dry are used to reproduce copies of such topographical ing and then into a hot air dry tumbler for final maps and other documents. drying. In a fixed installation, may also operate Arranges subject matter and focuses camera for flatwork presser. In a mobile unit, aids in setting up proper enlargement or reduction. Makes exposures trailers for field operation. and prepares negative to be used in transferring May operate these machines to sterilize or im image or pattern photographed to lithographic zinc pregnate clothing and equipment. plates. Selects properly grained lithographic plates Must know cleaning materials, temperatures, and and. coats it with sensitized albumen solution. procedures for different types of fabrics and dyes. Places plates in vacuum frame easel, beneath the

32 AGO 2S3A 30 Jim 45 TM 12-427 C 2 negative, and makes adjustments to center and Equipment used includes plate whirler, vacuum orients the negative properly over the plate. Ex- frame easel, timer, wet plate negative lithographic poses plate to illumination of electric arc lights. Re- plates, developing ink, and camera. moves plate and manually processes it with chemi-. Must have a general knowledge of photographic cals to develop pattern and condition plate for use and lithographic processes. in press.

AGO 283A 32A

770S24 O - 47 - 2 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

LOCOMOTIVE ENGINEER (110) tonnages, fire rake, and regulation locomotive • Assistant Road Foreman, Engine shovel. Must be able to judge condition of fire by its Locomotive Engineer (Diesel) Locomotive Engineer (Electric) color to keep a steady heat. Must know correct Locomotive Engineer (Steam) height of water in boiler. Must be thoroughly ac quainted with semaphore signals used on military Operates steam, Diesel, or electric locomotive by railroads. manipulating levers which control speed and direc tion or locomotive in pulling and pushing freight SUGGESTED SUBSTITUTES and passenger cars over a military railroad. 033 Brakeman, Railway Prepares locomotive for operation by checking 084 Stationary Fireman working condition of various levers such as locomo 117 Marine Fireman tive operating hand'lever, throttle, air brake, sand, and reverse levers. Drives engine by manipulating LOCOMOTIVE MECHANIC (112) levers, looking out of engine cab window and Foreman, Mechanic, Locomotive gauging adjustments by the condition of the track. Locomotive Brake Inspector Operates engine on through, local, or yard work and Locomotive Brake Mechanic controls movement of train in accordance with train Locomotive Hostler orders, schedules, and signals along the route. Oils Oiler, Locomotive and checks locomotive at halts. Railway Locomotive Mechanic, General May assist road foreman of engines in inspections Performs various types of mechanical repair in to insure proper mechanical condition of motive a railroad repair shop in connection with the main power and in instructing engineers and firemen in tenance of military railroad locomotives. their duties. Tests engine parts for defects and replaces de Equipment includes steam, Diesel, or electric lo fective parts. Inspects, tests, and repairs or replaces comotives of various heavy tonnages. air, vacuum, or steam brakes and brake operating Must be thoroughly familiar with railroad sema equipment. Lays off and lines down locomotive phore signaling. Must be thoroughly acquainted shoes and wedges. Aligns and repairs locomotive with railroad safety precautions. Must be able to rods and pins. Rebores cylinders. Repairs and re estimate grades and sharpness of curves and judge places trim 'on locomotives. Adjusts and sets loco safe speeds of train. motive valves. Lubricates locomotive parts. Equipment includes portable pneumatic and elec SUGGESTED SUBSTITUTES tric tools such as cylinder facers and crank pin 111 Locomotive Fireman turners, radial upright and sensitive drills, bolt and 112 Locomotive Mechanic nut threading machinery/brake test rack, air pump 135 Electric Locomotive Repairman cylinder grinder, cock grinder, and other brake re pair equipment. LOCOMOTIVE FIREMAN (111) Must have knowledge of principles of locomotive Fires and tends a locomotive boiler, maintaining design and construction and operation of various even fire in locomotive fire box to generate steam parts. for locomotive power. SUGGESTED SUBSTITUTES Fuels boiler by hand, shoveling coal, coke, or 114 Machinist other fuel into fire box or by manipulating valves to 135 Electric Locomotive Repairman control flow of fuel oil to fire box. Maintains proper 3.41 Shop Maintenance Mechanic amount of water in tender of cistern. Checks water 477 Mechanic, Marine Engine in gauge to determine whether boiler is adequately supplied. Supplies boiler with water by operating WOODWORKING MACHINE OPERATOR (113) valve which causes water to be injected into boiler Operates woodworking machinery to fabricate under pressure. Performs minor cleaning and main wooden articles. tenance on locomotive. Wipes gauges and control Cuts, shapes, fits, and assembles wood sections, levers in engine cab. Performs elementary main using woodworking power machines and hand tools, tenance operations, such as replacing flexible air and working from blueprints and drawings. Fin hose connections. When locomotive is in operation, ishes work by filling nail holes with plaster wood keeps watch on roads and crossings from side of and sandpapering by hand or machine to smooth engine cab in order to avoid accidents. finish. Keeps woodworking shop clean, oils power Equipment includes locomotive of various heavy machinery, and sharpens saws, planes and chisels. 33 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

May do minor carpentry such as constructing and Locates and diagnoses trouble and clears it by repairing tables, desks, shelves, and screens. making necessary adjustments, replacement or re Uses hand tools such as planes, chisels, saws, pair of items such as switches, relays, selectors, files, levels, calipers. T-square, protractor, ruler, terminal banks, keys, jacks, lamps, cords, plugs, and clamps and such material as lumber, nails, generators, rectifiers,'and brushes. screws, sandpaper and glue, and such power equip Uses electrician's small hand tools and test in ment as saws, jointers, planer, sander, drill press, struments. lathe, and shaper. Must be thoroughly familiar with the functioning of circuits, and with telephone repair and adjusting SUGGESTED SUBSTITUTES fundamentals. 050 Carpenter, General 202 Carpenter, Ship SUGGESTED SUBSTITUTE 232 Switchboard Installer-Repairman. Manual MACHINIST (114) Engine Specialist (Machinist. Automobile) DREDGEMAN (116) Foreman, Machine Shop Drag Tender Foreman, Machinist Foreman, Dredge Pipeline Railway Mechanic. General Dredge Leverman Tool Maker Dredgehand Makes metal parts and tools from metal castings, Operates dredge equipment and machinery aboard forgings, and stock, working to close tolerances in a vessel to excavate or move materials from chan a military machine shop. nels, rivers and harbors to permit passage of ships, Studies blueprint, selects metal stock, and lays landing craft or other vessels. out work, using guide gauge, straightedge, and pro Operates dredge equipment and machinery con tractor. Sets up work in machines and selects cor trolling raising, lowering and placing of drags on rect shaped and sharpened cutting tool for each suction dredges. Operates levers to control excavat type of machine to be used. Operates metal-work ing mechanisms, including spuds, anchor lines and ing machines such as engine lathe for shaping metal other dredge equipment. Maintains in good repair parts, milling machine for surfacing metal by action and working order, machines and mechanical equip of rotating cutter, planer.for cutting flat surfaces ment aboard the dredge. on metal, power hack saw for sawing metal stock May supervise laying of heavy pipelines on water, to length, shaper for shaping exterior surfaces of by use of pontons or construction work. metal parts, -vertical boring mill for cutting circu lar or cylindrical surfaces on metal parts, and drill Should have thorough working knowledge of press for cutting holes in metal. Checks dimensions dredging operations obtained through training and experience in the field. of part during machine process with micrometers, calipers, gauges, and ruler. Cleans and oils each machine used. Sharpens cutting tools on grinder. MARINE FIREMAN (117) Removes bars and excess metal from parts, using Maintains proper steam pressure in marine boil hand tools such as files and scrapers. Fits and as ers by stoking coal or controlling feed valves of sembles parts according to blueprints. May heat- oil burners. treat parts by annealing, case hardening, or Observes steam gauge to determine steam pres tempering. sure and water gauge to assure that proper amount Must be able to work a variety of metals, such as of water is maintained in boiler. Removes clinkers, steel, wrought iron, cast iron, brass, and aluminum. ashes, and sludge from burners by means of bars, SUGGESTED SUBSTITUTES shovels, and wires. Must understand the purpose of such devices as 302 Machine Operator (Designated Machine) safety valves, steam and water gauges, blow-off 341 Shop Maintenance Mechanic cocks, condensers, feed water heaters, feed pumps, and ejectors. Must be above average in physical AUTOMATIC TELEPHONE SYSTEM MAIN strength and capable of working in intense heat. TENANCE MAN (115) Maintains, repairs and tests switching and aux SUGGESTED SUBSTITUTES iliary equipment of an automatic telephone system 084 Stationary Fireman such as may be installed at an Army or general 111 Locomotive Fireman headquarters. 141 Marine Oiler

34 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

SMALL BOAT OPERATOR (118) such as auto -mechanics, electricians, or artillery Master, Ship mechanics. Mate Should have an elementary knowledge of and Directs the sailing, docking, loading, unloading, skill in maintenance of machinery, carpentry, and maintenance of a small boat. plumbing, painting, and electricity. Supervises ship's crew in navigation and deck and MULTILITH OR MULTIGRAPH OPERATOR engine operation. Orders ship's supplies and equip (128) ment. Keeps ship's log. Plots ship's course on chart. Multigraph Operator Uses sextant and other navigation instruments. In Multilith Operator spects stowage and bracing of cargo and equipment Produces duplicate copies of printed or typed and embarking and disembarking of troops. Directs forms, orders, bulletins, memoranda, training aids, communication between ships and ship-to-shore. and charts by the operation of multilith and multi- Must know advanced seamanship navigation prin graph machines. ciples, piloting, deadreckoning, and celestial navi Stacks blank paper in feed carrier of multilith gation, care of vessels, maritime rules, and me machine or sets type by hand in semicircular drum chanical operation of ships and equipment. Should of multigraph machine. Adjusts paper guides to be familiar with meteorology, including tides and allow proper flow of paper through machine. Cov currents. ers printed or typed plate with protective solution MEAT OR DAIRY INSPECTOR (120) and secures plate to. revolving drum of machine. Dairy Inspector Packs ink paste in ink fountain, using putty knife. Meat Inspector Starts machine and checks printed matter for mar Inspects and examines foods of animal origin ginal correctness and general appearance. Corrects such as meat, fowl, fish, milk, cheese, and butter to faulty margins by adjusting screw controls. Ad insure compliance with purity, grade, and quality justs ink control to allow for correct flow. Cleans standards prior to, at time of, and subsequent to and oils moving parts. Keeps record of copies purchase of meat or dairy products. printed and files plates. Removes, sorts, and cleans Inspects storehouses and refrigerators where food multigraph type. is stored to insure compliance with Army sanitary May operate mimeograph, ditto, or paper cutting regulations. Maintains records of inspections and machines. , findings and sends questionable articles of food to FOUNDRYMAN (129) medical laboratory for examination. Coremaker Furnace Operator May assist veterinary officer in the care and Foreman, Foundry Molder treatment of animals. Processes iron, aluminum, brass or other metal Must be familiar with Army sanitary standards castings used in the repair of military equipment, and have working knowledge of food inspection performingisuch duties as making cores, preparing methods. molds, firing and charging furnaces, pouring metal, SUGGESTED SUBSTITUTES and preparing castings for machining. 037 Meat Cutter Makes cores used in molds for hollow castings by 250 Veterinary Technician compacting a mixture of sand and binder into' core boxes. Removes and smoothes cores, and hardens UTILITY REPAIRMAN (121) them by baking in oven. Maintenance Man Forms sand molds by sifting sand into flask Mechanic, General (framework for shaping mold) and compacting the Keeps buildings and equipment of a unit or post sand around pattern to be formed, using a hand in good repair and working order by performing ramming tool. Withdraws pattern from mold, using a wide variety of maintenance tasks. a draw screw, and patches slightly damaged impres Constructs simple articles, such as rough-finish sions, using a molder's slick (knifelike smoothing tables, training aids, gun racks, shelves, and par tool). Applies coating of powdered coal, graphite, titions, using carpenter's tools or any other hand or molasses to strengthen mold impression. tools which are available. Follows oral instruc Fires and charges an oil-fired or gas-fired pit tions, rough sketches, and diagrams. In the field, furnace in which various metals or alloys are melted improvises- expedients in making temporary repairs to be used in making castings. Ignites oil or gas to equipment when replacement parts are un burner and regulates valves on fuel and air lines available. to heat ftjrnace to pouring temperature of metal. May assist second echelon maintenance men, Fills crucibles with pig or scrap metal. Attaches

35 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL tongs to crucibles and lowers them into furnace by May synchronize a sound track with the motion hand or with a hoist. Removes crucibles from fur picture by running both films on a synchronizer nace when molten metal is at proper pouring tem and marking them at critical points. May cut nega perature, using a pyrometer or judging by the color tive to correspond with the finally edited work print of the metal. May transport crucible and pour motion picture. Must be familiar with edge num molten metal into molds. bering techniques. Removes castings from mold and cleans them by Uses a rewinder, scraper, cement, and splicing use of sandblast and wire brushes. May further clamp to splice film. prepare castings for machining by chipping with a SUGGESTED SUBSTITUTE pneumatic hammer and smoothing with portable 287 Sound Editor, Motion Picture surface grinder. Must have knowledge of molding sands and how ELECTRICIAN, MOTION PICTURE (132) they are mixed. Must have knowledge of best tem Electrician. Generator and Motion Picture peratures for casting different types of metals. Installs, operates, and maintains electrical equip ANIMATION ARTIST (130) ment used in making motion pictures. Prepares a series of animated drawings which Rigs, connects, operates, and strikes all electrical are to be used in the production of motion pictures equipment used in motion picture production. Sets for instructional or training purposes. up high intensity arc lights, incandescent spotlights, Receives scenario and background material from and floodlights, as directed. Lays out electrical ca the director and plans means of graphically rep bles for the distribution of current from the resenting actions or ideas. Decides on any spe power source to the lights, cameras, and sound cial animation techniques to be used. Draws base equipment. Makes emergency splices and repairs drawings, backgrounds, extreme drawings, and in- on the cable. Locates loose connections, using volt- betweens, which are first made on tracing paper ohmmeter to test continuity of circuits. and later transferred to celluloid. Produces a se Makes minor repairs to equipment, using solder quence of drawings, each drawing showing a slightly, ing iron, blowtorch, pliers, screw drivers, hammers, more advanced stage of the motion being depicted knives, hack saws, and wrenches. than the preceding one. SUGGESTED SUBSTITUTES May draw pictorial charts and orthographic and 078 Electrician perspective views. May opaque the area between 415 Electrician, Sound Transmission lines after they have been traced on calluloids, using paints and brush. LABORATORY TECHNICIAN, MOTION Uses rule, inking pens, pencils, T-square, tri PICTURE (134) angles, and French curves and air-brush equipment. Laboratory Supervisor, Motion Picture Must have manual skill and artistic ability to Laboratory Technician, 16-mm make technical animated drawings. - Laboratory Technician, 35-mm SUGGESTED SUBSTITUTE Laboratory Technician, Sensitometry Supervises or assists in the work of a motion pic 296 Artist ture film processing laboratory in which motion FILM EDITOR, MOTION PICTURE (131) picture" negatives are developed and positive prints Film Cutter lor projection are made for military purposes. Negative Cutter Adjusts film printing machinery so that the con tinuous projection print made from separative nega Edits, arranges, and composes film in connection tives will be of uniform density throughout. Designs with the production of motion pictures for intelli or improvises equipment to meet laboratory needs. gence and training purposes. Must have knowledge of laboratory processes in Marks and labels each scene. Watches the scenes volved in the developing and printing of motion as they are run through a moviola or projector picture film. many times. Makes rough cuts and first and final selections of scenes. Assembles selected scenes in ELECTRIC LOCOMOTIVE REPAIRMAN (135) the sequence prescribed in the scenario. Inserts Maintains and repairs motors and electrical equip titles, animated sections, close-ups, and special ef ment on electric or Diesel-electric locomotives in fects such as fade-outs and fade-ins. Rearranges a military railway locomotive repair or machine scenes to produce better continuity and rhythm and shop. to add more interest appeal. Reviews final assembly Makes trial runs, inspecting locomotives to de on a moviola. termine defects in electric mechanisms and controls 36 SPECIFICATIONS FOK MILITARY OCCUPATIONAL SPECIALTIES and prepares check sheet for repairs required. Dis lion of projection and sound equipment, and re assembles electric control equipment, transformers, places such parts as the projection lamp, exciter shunts, and electric circuits; tests parts; replaces lamp, photo-electric cell, vacuum tubes, sound ex parts where necessary. Disassembles, repairs, and citer, and amplifier when they are burned out. Re assembles electric motors and generators. places worn sprocket wheels and felt guide rollers, Equipment includes general mechanic's tools, dif using common hand tools such as pliers and screw ferential and monorail hoists, and ohmmeters and drivers. voltmeters for testing electrical equipment. MOTORCYCLE MECHANIC (138) Must have knowledge of the construction and op eration of electric locomotives. Inspects, maintains, and makes major repairs on motorcycles and accessory equipment in a military SUGGESTED 1 SUBSTITUTES repair shop. 013 Diesel Mechanic Examines and tests equipment to determine causes 078 Electrician for faulty operation, checking such elements as car 304 Electric Motor Repairman buretor, ignition system, cooling system, transmis sion, and clutch. Disassembles such parts of the MODEL MAKER 1.136) motor, transmission, or running gear requiring re pair, and-repairs and replaces worn or defective Constructs models of military equipment and of parts. Reassembles unit, lubricating all moving any other object or terrain for use in the production parts and making adjustments for proper alignment of motion pictures, study of equipment, manufac and clearances. ture of training aids, or the detailed study of terrain May rebore cylinders, reface and regrind valves, which has been or will be the site of military and refit connecting rods. May balance fly wheels, operations. straighten frames, and align wheels. Constructs models to scale, using maps, drawings, Must have a knowledge of construction and op blueprints, sketches, or photographs. eration of various models of motorcycles and be Employs such materials as clay, plaster-of-paris, skilled in the use of such tools and equipment as sand, wood, metal, stone, and papier mache. Uses hammers, punches, chisels, socket and open end rulers, calipers, chisels, saws, hammers, and.other wrenches, files, hack saws, thickness gauges, squar carpenter's tools. ing plate, fly wheel truing device, bench lathe, con SUGGESTED SUBSTITUTES necting rod aligner, valve refacing machine, and 050 Carpenter, General power grinders. 296 Artist SUGGESTED SUBSTITUTES PROJECTIONIST, MOTION PICTURE (137) 905 Mechanic, Engine, Wheel Vehicle (Gasoline) 909 Mechanic, Engine, Track Vehicle Operates and makes minor repairs and adjust 965 Mechanic, Automotive, Wheel Vehicle (Third ments on motion picture projection and sound Echelon) reproducing equipment to project motion pictures 966 Mechanic, Automotive, Track Vehicle (Third in connection with sueh activities as military intelli Echelon) gence, training, and entertainment. Sets up machine by threading film from reel on MARINE OILER (141) upper spindle, over the driving sprocket and guide Chief Oiler rollers, past the exciter lamp and projecting lamp, Lubricates main engines, auxiliaries, and electric and onto empty reel on lower spindle. motors aboard ship by squirting oil into oil cups Frames and focuses images 'on screen by turning and filling grease cups to keep machinery in run regulating screws. Focuses blurred image by adjust ning order and to prevent overheating. ing main lens. Turns dials to control volume and Assists marine engineer in repair work such as tone of the sound amplifier. packing and pipe fitting, by lifting and holding Inspects films on a rewinding device to detect parts and passing tools and material. Operates main such defects as loose or heavy splices, broken film, and auxiliary engines by opening and closing throt torn sprockets and holes, defective sound track, or tle valves to start, stop, and control engines. Cleans dirty or oily condition. Splices broken film, using engines by wiping excess oil off engine frames and rewinder, film scraper, film cement, and .splicing base. Mops desk plates and washes wall plates in press. Places cue numbers on film, Adjusts reflector engine room. and adjusts and replaces carbon electrodes in May supervise a group of workers engaged in lamps. Operates spotlight. Cleans and checks opera- above duties.

37 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

PAINTER, GENERAL (144) PHARMACIST (149) Painter, Automobile Directs and supervises pharmaey technicians in Painter (AAF) the compounding and dispensing of medicines. Applies paint to airplanes, automotive equip Measures out or weighs proper amounts of each ment, and buildings, using brush or paint spraying chemical and drug indicated in prescription, using equipment. balance scales and graduates, and combines them to make solutions, powders, tablets, and ointments. Cleans and removes old paint and varnish, using Supervises and instructs enlisted men in the filling putty knife, wire brush, sandpaper, and blowtorch. of prescriptions and in the preparations of stock Matches and mixes paints and varnish, using proper solutions and powders according to specifications, amounts of pigment, linseed oil, turpentine, paint, and measurements listed in the United States putty, and coloring tints. Erects scaffolding by Pharmocopeia Manual. means of sectional ladders and planks or a working Must have state license to practice pharmacy. platform suspended from the roof. Fills nail holes or crevices with putty or plastic wood, smoothing SUGGESTED SUBSTITUTES surfaces with putty knife. Sandpapers woodwork 858 Medical Laboratory Technician and applies coatings of stain, shellac, and varnish. 859 Pharmacy Technician May do striping, lettering, and other sign paint ing work. May paint structures and equipment for CRYSTAL GRINDER (150) camouflage. May operate with a spray gun. Grinds and calibrates crystals to be used in crys Must have knowledge of mixing and matching tal-controlled radio sets. paint. * Processes crystal wafers to the required dimen sions for a frequency, using small drill press with SUGGESTED SUBSTITUTE circular holder revolving between abrasive-coated 145 Painter. Sign iron plates. Accurately measures and adjusts fre quency of crystal by the use of standard electronic PAINTER, SIGN (145) frequency measuring and calibrating equipment, Makes signs as are required in the operation of and by hand finishing. Installs and performs first military post, camp, station, or in the field. echelon maintenance on equipment, using screw Designs, lays out, and paints signs on wood, driver, small wrenches, pliers, and hammer. metal, cloth, paper, and glass. Does free hand Must be familiar with all types of crystal cuts lettering when necessary. Makes signs and builds and their characteristics. Must know the type of simple displays, using carpenter's and thinnef's holder to be used, the required crystal activity and tools. tolerances and the type of test unit to be used in. calibrating and supplying crystals for any particu SUGGESTED SUBSTITUTE lar set. 144 Painter, General PHOTOGRAPHER (152) PATTERN MAKER, WOOD (148) Photographer, News Photographer, Portrait Builds wooden patterns and core boxes, working Makes indoor and outdoor photographs of mili from blueprints or drawings, in connection with tary personnel, equipment and activities, and other the operation of a foundry. material for publicity, training and instructional Makes wooden patterns, using hand and ma purposes. chine tools. Checks work with calipers, protractors, Selects and arranges subject matter to secure straightedges, and other measuring instruments, proper emphasis, adjusts camera accordingly, and making allowances for shrinkage of castings. As takes pictures. sembles and glues parts together and inserts dowels May perform darkroom work, including film and in abutting pieces. Sands surface smooth, fastens paper processing, printing, and enlarging of still fillets along interior angles or corners, and applies photographs. May make and process copies of docu shellac to finish pattern. Designs and constructs ments, maps and photographs. wooden core boxes. Must understand the mechanics, operation, care, Uses such hand and machine tools as lathe, borer and maintenance of still cameras of various types and router, planer, power saw, sander, shaper, and and their accessories. Should have knowledge of carpenter's bench and hand tools such as saws, the fundamentals of optics, filters, use of auxiliary planes, hammers, mallets, scrapers, chisels, gauges, lighting units, and use of various chemical solutions awls, brace, and bits. and laboratory equipment used to process negatives. 38 30 Jun 45 TM 12-427 C 2

MICROFILM EQUIPMENT REPAIRMAN (158) Equipment used includes laboratory apparatus such as scales, test tubes, flow meters, hardness Repairs, rebuilds, adjusts, and maintains in serv testers, gauges, thermometers, burners, and distilla ice the mechanical and electrical parts of micro tion equipment. film photographic equipment and accessories. Must be able to work under limited supervision Diagnoses faults appearing on the microfilm, and use individual initiative and judgment. Should such as poor exposures, overlapping, and uneven be thoroughly familiar with various types of physics illumination, and determines the source of mechan laboratory equipment. ical or electrical malfunctioning. Disassembles mi crofilming machine and checks for worn or missing PLUMBER (164) parts, such as slipping clutches and rollers and Pipe Fitter shorts in resistors, and adjusts and tightens loose Pipe Fitter, Railway parts, using precision and other hand tools. Installs Steam fitter new condensers, switches, brushes, and lamp assem blies, and solders wire connection with soldering Installs, assembles, bends, cuts and threads air, iron. Inspects continuous enlarging and paper water, gas, and low and high pressure steam, pipe, processing equipment and makes adjustments and and fittings in various systems used for the con repairs to the mechanical equipment, using pliers, veyance or distribution of steam, air, gas, and wrenches, and screw drivers. liquids. Cuts large pipe with chisel and hammer, or oxy- SUGGESTED SUBSTITUTES acetylene torch, and small pipe with pipe cutter. 016 Laboratory Technician, V-mail or Microfilm Reams end of cut pipe with reamer. Threads pipe, 042 Camera Repairman using vise, stock, and dies. Bends pipe by hand- driven or power-driven machine. Works with steel, PHYSICS LABORATORY ASSISTANT (160) iron, copper, and brass pipe, and such fittings and fixtures as couplings, elbows, unions, valves, traps Knock Engine Tester and hangers for holding the pipe in place. Uses Petroleum Laboratory pipe chain and Stillson wrench for holding or turn Technician ing pipe. Removes and replaces defective parts. Petroleum Test Engine May remove and clear clogged pipes, or prepare Operator new sections if the obstruction cannot be removed. Soils Technician May specialize in the installation, maintenance, and repair of waste or water disposal plumbing systems Assists in physical testing and experimental work and fixtures. in a military laboratory. Is capable of following oral or written specifica Assembles and prepares laboratory equipment tions and blueprints. Should have a working knowl for tests. Performs routine tests and assists in spe edge of the use of calking, packing, and gasket cial researches and experiments on various kinds materials. of matter such as chemical equipment, munitions, petroleum, soils and textiles. SUGGESTED SUBSTITUTES Observes, tests and records results. 104 Laundry Maintenance Mechanic May determine various physical and chemical 121 Utility Repairman properties of petroleum products such as viscosity, specific gravity, flash and fire points, melting point, LINEMAN, POWER (165) sediment and residue. May determine knock intensity and octane rating Erects and repairs power lines consisting of poles, of gasoline and kerosene fuels by actual test on cables, transformers, and auxiliary equipment for engine and comparing with control samples. the transmission of electric power to military in May analyze soils and aggregates for stability, stallations. moisture content and bearing value involving a Digs holes and sets up poles to support power working knowledge of concrete, soil cement and lines. Climbs poles and attaches cross arms, insula asphalt, and determine suitability for various types tors and transformers. Attaches wires to insulators of construction work. by means of a tie-wire and makes connections by May test textiles and other materials for tensile stripping insulation from wire ends, twisting and strength, durability and the like. soldering them together, and covering them with

AGO 283A 39 TM 12-427 30 Jun 45 C 2 friction tape. Mounts poles and connects transform For assignment as Topographic Equipment Me ers and leads to buildings. chanic, must be qualified to service and maintain Tools and equipment used include pliers, in good repair such topograph reproduction equip wrenches, screw drivers, brace and bit, poles, trans ment as lithographic presses, process cameras, vac formers, insulators, wire, soldering iron, safety uum printing frames, plate graining and plate belt, and pole climbers. coating machines and photo dryers. Must have knowledge of electricity and the tools and equipment used in electrical construction work. PRINTER (168).

SUGGESTED SUBSTITUTES Casting Machine Operator 078 Electrician Hot Press Operator 238 Lineman, Telephone and Telegraph Linotype Operator Monotype Operator POWERMAC (166) Makes up standard and special printing forms Power Plant Installer in connection with the production of military pub Installs, operates, adjusts, and repairs Army lications. power plant equipment composed of internal com Measures sample of copy with line gauge and bustion engines, electric generators, and accessories sets stick to desired length. Selects type from com employed to supply power for uses such as lighting, partments in type case and sets type in lines in telephone, telegraph, radio or construction ma stick. Slides type from stick into galley and inserts chinery. leads. Arranges lines of type, cuts, and spacers in Locates, diagnoses, and clears trouble. Makes galleys. Makes proof of set-up, corrects set-up, adjustments, repairs, replacements and substitu and forwards corrected set-up to press. tions on equipment and parts such as electric mo May operate automatic machine for making tors, generators, circuit breakers, rectifiers, wiring, metal slugs of lines of type. May operate linotype, brushes, commutators, storage batteries, Diesel and monotype, or casting machine. May operate hot gasoline internal combustion engines, valves, igni press to make impressions. tion systems, cylinder heads, carburetors, fan belts, Must know standard type style and printed page and bearings. make-up. Uses electrician's and automobile mechanic's JOB PRESSMAN (169) tools. Must have knowledge of a-c and d-c principles of Makes ready and tends a printing pressi electricity. Must be able to read and trace circuit Inserts form in bed of press and tightens locking diagrams. Must be familiar with the use of block attachment. Puts ink into fountain and adjusts and tackle and other rigging procedures used to lift, rollers. Places stacks of paper in feed tray and move and place heavy objects. adjusts height of tray. Starts press, adjusts paper feed, and regulates ink flow. Removes printed LITHOGRAPHIC PRESSMAN (167) sheets from discharge tray. Lubricates and makes Topographic Equipment Mechanic minor adjustments to press. Operates a rotary lithographic press in the pro ENGINEERING AIDE (DESIGNATED FIELD) duction of military maps. Sets up and adjusts lithographic plates to in (170) sure accurate register. Places water and ink in re spective feed fountains and paper in feeder. Starts Assists in performing technical work in the field machine and adjusts ink, water, paper feed and indicated involving the development of apparatus, plate to obtain clear copies of printed material. measurement of phenomena, and the collection and Cleans and lubricates machine and makes minor transportation of data incident to research in and adjustments to press. development of Army materiel. May grain plates to remove old image. May pre To be used only in overhead installations such pare plates, including sensitizing of and burning as laboratories, proving grounds, and experimental image into plate. stations, and not in units represented by Tables of May make repairs on topographic map reproduc Organization unless approved by The Adjutant tion equipment. General's Department.

40 AGO 2S3A 30 Jun 45 TM 12-427 C 2

Types of Designated Fields: Mechanical Engineering Radiographic Engineer- Aerial Bombs Artillery Mobile Artillery ing, such as X-ray Aerodynamics Automotive . Optics Railway Artillery Aircraft Engines Aviation Armament Photography (Scien- Rocket Ammunition Ballistics tific) " Seacoast Artillery Antiaircraft Artillery Electrical Engineering Radio Small Arms Armor Electronics

AGO 283A 40A 5 Feb 46 TM 12-427 C3 BANDSMAN, OBOE (175) Tools and equipment includes climbing irons, safety belt, soldering iron, solder, pliers, screw Plays an oboe in a military band. driver, wrenches, hammer, hack saw, insulating and Reads music and plays instrument while march friction tape, earth borer, and pole jack. ing in military formation. Must be familiar with standard operating rules Should be familiar with military marches and and regulations governing military railway elec selections used in Army bands. tric transmission systems. Should understand prin ciples of rigging. BANDSMAN, BASSOON (176) SUGGESTED SUBSTITUTES Plays a bassoon in a military band. Reads music and plays instrument while march 165 Lineman, Power ing in military formation. 238 Lineman, Tp and Tg Should be familiar with military marches and 281 Third Rail Repairman selections used in Army bands. 401 High Voltage Cable Splicer

SIGNAL MECHANIC, RAILWAY (181) SUBSTATION OPERATOR (184) Railway Signal Supervisor Operates a substation switchboard, by automatic Installs, repairs, and maintains signal equipment or manually controlled apparatus, to regulate the incident to the operation of military railway systems. flow of electric current through transmisison lines. Locates, erects, repairs, and tests signal equip Operates switches, circuit breakers, converters ment along railroad route such as lamps, lanterns, and stepdown devices to regulate amount and type oscillating arms, crossing bells, and switch indi of current transmitted to trolley systems or third cators. Tests circuits connected to signals. Re rails. Checks ammeters to determine amount of cur pairs and installs new signals. Installs and main rent consumed. tains insulated rail joints. Adjusts switches and Must be familiar with standard operating rules switch boxes. Repairs interlocking towers. Checks and regulations governing military railway or other batteries, refilling with water or installing new electric power transmission systems. Must have ones. Cleans signal lamps and lenses. knowledge of system of light signals used to indi Equipment includes handsaw, knife, pliers, scis cate opening and closing of high voltage switches or sors, screw drivers, files, splicing clamp, wire breakers. splicers, soldering irons, blowtorch, and pole climb- SUGGESTED SUBSTITUTES ings aids such as safety belt and climbing irons. Must be familiar with rules and regulations gov 078 Electrician erning operation of military railways. Must be 092 Generator Switchboard Operator familiar with principles of railway signal systems 258 Substation Electrician including manually operated, automatic, semiauto matic, and fixed signals. Should be able to read RAILWAY SIGNAL OPERATOR (185) blueprints. Railway Towerman SUGGESTED SUBSTITUTES Operates track switches and railway signals from 078 Electrician a signal tower to control movements of military 238 Lineman, Telephone and Telegraph railway trains 304 Electric Motor Repairman Manipulates levers which control railroad traffic in a railroad yard or at switching points, following HIGH VOLTAGE LINEMAN (182) train schedules, special orders, and safety regula Erects, maintains, and repairs high voltage (6,600 tions. Operates light and combination types of to 230,000 volts) catenary systems used for trans wigwags, crossing bells, and switch indicators. Uses mission of power in operation of military electric telephone to transmit and receive messages and railway systems. orders. Locates high voltage lines. Erects poles. Climbs Must be familiar with principles of military rail poles, using climbing tools and aids. Strings wires way signaling including manually operated, auto and ties. Provides static protection and sets up guys matic, semiautomatic and fixed signals. Must have and braces. Makes branch connections and con knowledge of rules and regulations governing op nects transformers and leads. eration of military railways.

AGO 3006A 41 TM 12-427 5 Feb 46 C3 REPEATERMAN, FIELD (187) Must be physically strong, and capable of pro longed heavy labor. Installs, adjusts and maintains field type repeater This classification and specification serial num and carrier equipment used in a military long lines ber will be assigned enlisted men'who perform such wire communication system. duties regularly. Assembles and installs field type repeater and carrier units in accordance with circuit and lay-out RIGGER (189) diagrams. Tests circuits and equipment for faulty operation. Makes various types of tests such as Performs all types of general rigging work on measurements of transmission gains or losses and military construction, manufacturing, shipping, rec line resistances. Makes operating adjustments on lamation, and other activities. field type repeater and carrier units to produce Raises and moves heavy equipment, using der proper gains, levels, balances, and equalization as ricks, cranes, gin poles, A-frames, cableways, and pertain to amplified signals and creation of addi chain blocks. Sets up, braces, and rigs hoisting equipment, splices rope or steel cable, and reeves tional communication channels. Locates, diagnoses, and clears trouble by making necessary repairs (in and runs rope and guy wire. Uses such equipment as rope, steel cable, chains, cluding improvisations), replacements, or sub hooks, snatch blocks, pulleys, ax, sledge, wrenches, stitutions. knife, and other small tools. Uses electrician's small hand tools and test Must be able to climb. Must know knots, splices, instruments. correct method of moving heavy objects, and safety Must have knowledge of line and ringer circuits precautions to be followed in moving heavy equip of common battery switchboards and be able to ment. read and interpret circuit drawings. Must under stand theory of field type repeater and carrier SUGGESTED SUBSTITUTE systems. 100 Structural Steel Worker DUTY SOLDIER II (188) RODMAN AND CHAINMAN, SURVEYING (191)

Axman, Surveying Works as a member of a field survey party en Construction Laborer gaged in the collection of data concerning terrain Construction Worker (AAF) features and topographical measurements. Earth-Boring Machine Operator. Holds a sight rod, level rod, or a stadia rod so Fork Lift Operator that location lines, elevations of stations along the Highway Maintenance Man line, and approximate distances between stations Jackhammer Operator can be determined. Takes linear measurements by Warehouseman means of steel tape. Carries equipment used by sur vey party such as level, sight and stadia rods, stakes, This is a broad classification covering enlisted transits, and steel measuring tape. Clears right-of- men, who, under supervision, perform various heavy way in advance of survey party by removing brush^ laboring duties in connection with construction and trees, branches, and other obstacles, using ax, brush- demolitions work, loading and unloading of sup hook, or bolo knife. plies, or other duty involving physical strength and some degree of skill and responsibility." SADDLE AND HARNESS MAKER (192) Digs holes and ditches, chops trees, saws wood, mixes and pours concrete. Grades roads and pre Repairs all harness, leather, and canvas equip pares subgrades. Installs building equipment. ment of an organization which employs animals Razes old structu: ?s, salvages usable material and for transport. removes debris. Uses such hand tools as pick, Lays out, cuts, and fits leather parts, using shovel, ax, Jackhammer, crowbars, and wrenches. leather cutting hand tools arid a splitting machine Carries heavy materials. Stacks or otherwise designed to cut leather into various thicknesses. stores military supplies and equipment in ware Sews leather by hand or uses lock-stitch sewing houses or on docks. Loads and unloads trucks, machine. Makes a variety of small leather parts freight cars, or dock facilities. Moves materials by for replacement on harness, saddles, bridles, and use of monorail hoists, tow trucks, fork lifts or other equipment. Repairs breaks in straps and other mechanical devices. harness by skiving, lapping together, and securing

42 AGO 3006A 5Feb46 TM 12-427 C3 the joint by sewing parallel to the edges. Replaces stone, draw gauge, dividers, pliers, riveting anvil, such hardware held by leather binding such as slicker, thimbles, needles, pegging awls, saddler's hasps, rings, and snaps by sewing or riveting. anvil, and a steel slicker for smoothing leather. Uses such tools as saddler's clamp, leather split- Must understand properties of leather including ting machine, screw driver, punch riveting hammer, methods of cleaning, softening, preserving, and punches, rivet-cutting nippers, shears, sharpening oiling.

AGO 3006A SPECIFICATlOiNS FOR MILITARY OCCUPATIONAL SPECIALTIES

SUGGESTED SUBSTITUTES May perform other tasks such as conducting 204 Shoe Repairman ' insect and vermin control surveys and supervising 609 Leather and Canvas Worker mixing of insecticides and fumigation of infested areas or buildings. SALVAGE TECHNICIAN (194) Must have working knowledge .of public health measures such as insect and rodent control. Foreman, Salvage waste disposal, and water purification. Should be Salvage Inspector able to identify common species of mosquito ami Salvage Man take proper steps for elimination. Salvage NCO Superintendent, Classifier SUBMARINE CABLE STATION TECHNICIAN Superintendent, Waste Disposal (197) Assists in the collection, removal, classification, Diagnoses faults in relays, automatic control?. and disposition of salvageable material and equip distributors, reperforators and other components ment. used in electronic submarine equipment, multi Classifies salvage with respect to the supply plex equipment and automatic printers, by using service originally issuing each item of equipment. precision and other hand tools to determine source Determines salvage value, and separates salvage of mechanical malfunctioning, in order to make into repairable and non-repairable, critical, and necessary repairs or adjustments. noncritical, ferrous and nonferrous materials. Installs, tests and repairs submarine cable ter May disassemble salvage, using such tools as minal equipment. saws, hammers, wrecking bars, and acetylene burn Conducts trouble location tests on submarine ers. May pack, crate, or bale salvage for shipment cables. to repair units or depots. May weigh salvage and Must have a knowledge of the theory of vacuum stack it in bins. May assist in the disposal of waste. tube amplifiers, wave shaping equipment and Should understand physical and chemical prop power supply equipment. erties of metals and other materials. Should know SECTION HAND, RAILWAY (199) how to destroy salvage or otherwise render it use Section Foreman, Railway less to the enemy. Should be familiar with decon Excavates .and grades railroad right-of-'.vay ar.d taminating procedures. Should be able to recognize lays, levels, and tamps railroad tracks. and neutralize booby traps. Preparatory to laying track, levels right-of-way, using pick and shovel, and builds up low places by SANITARY TECHNICIAN (196) filling with dirt. Lays ties and rails, setting out Supervises and assists in construction of regula cross ties at right angles to rails. Spaces cross ties tion latrines, soakage and garbage pits,- incinerators, at regular intervals. Drives spikes into ties to hold and showers, and assists in the maintenance of ade rails in position. Lays sliding plates and switches. quate sanitation and hygienic measures to preserve Levels and tamps tracks. health and prevent disease. Equipment includes rail sections and ties, Supervises or assists in the construction of la switches, jacks, claws, track gauges and levels, slid trines, digging of trenches and pits with pick, shove!, ing plates, bulldozers, and motor railway ears. and ditching blade; building of incinerators with As foreman, supervises the excavation and grad buck, stone, mortar, or other materials; and con ing of railroad right-of-way and the laying, leveling, struction of wooden supports for showers. Inspects and tamping of railroad tracks. Preparatory to buildings, field kitchens and surrounding areas to laying track, supervises excavation and grading insure compliance with sanitary standards and notes work and is responsible for proper drainages, curv conditions such as adequate screening, proper dis atures, grades, and clearances. Supervises track posal of waste, cleanliness of kitchen, field water laying operations such as the laying of ties and purification and equipment, mess halls, mess per rails, proper spacing of ties and rails, and installa sonnel, insect and vermin control and general clean tion of switches and sidings. Is responsible for liness of ramp area. Makes surveys for mosquito maintenance and repair of tracks, regrading right- control, identifying species and locating breeding of-way, and replacing ties and rails as necessary. places, and supervises digging of drainage ditches As foreman, must have thorough knowledge of and spraying and oiling of streams and pools. rules and regulations governing operation of mili Sterilizes water by hanging a Lyster bag from a tary railways. Must be able to work from blue limb or tripod of poles, filling bag with water^ and prints. Must be familiar with semaphore signals adding standard proportion of chlorine compounds. used by railroads. 43 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNKL

SUGGESTED SUBSTITUTES SUGGESTED SUBSTITUTE 059 Foreman. Construction 050 Carpenter, General 356 Foreman. Labor SHOE REPAIRMAN (204) SEWING MACHINE OPERATOR (200) Foreman, Shoe Repair Repairs shoes in a fixed or mobile repair unit. Operates an electrically-powered or pedal-oper Resoles and reheels shoes. Mends ripped seams, ated sewing machine to repair damaged clothing patches holes, cements insoles in place, and re or equipment in a fixed or mobile repair unit. places counters. Sews rips and tears, places patches over holes, Operates finishing, stitching, sole cutting, skiv and sews entire sections into badly damaged articles. ing, and patching machines, and uses cobblers Makes minor adjustments to machine. hand tools to repair shoes. May make repairs on other leather equipment. SHEET METAL WORKER (201) Automobile Body Repairman Tinsmith SHOP ENGINEER, RAILWAY (205) Automobile Radiator Repairman Assistant Shop Superintendent Wreckmaster Fabricates, assembles, installs and repairs sheet Railway Shop Dispatcher metal articles in connection with the repair and Assigns and coordinates the work of enlisted maintenance of motor vehicles and mechanical men in a military railroad repair shop in effecting equipment. major repairs to steam, Diesel, gasoline, and elec Cuts sheet metal, such as aluminum alloys, steel, tric locomotives, tenders, tank cars, and passenger copper, and zinc, with hand shears, rotary shears, and freight cars, and is responsible for maintenance and squaring shears. Bends metal to desired shape, of shop facilities and equipment. using bar folder, cornice brake, forming rolls, Makes initial inspection of repair jobs received grooving machine, and closing machine. Punches and determines extent of repairs necessary. Plans or drills holes for rivets, bolts, and screws with repair operations, considering availability of sup center punch and hammer, hand drill, or drill press. plies and materials and relative urgency of jobs on Assembles sheet metal parts, brackets, and hangers. hand. Assigns repair work to shop foremen and Welds, nails, solders, bolts, rivets, or fits them into supervises, directs, and checks all operations. units for erection, making attachments, joints and Major repairs include machining of locomotive seams. Grinds or files seams, joints, or rough sur and car parts, welding, forging, sand blasting, and faces with grinding wheel or file. car carpentry. Coordinates work to minimize con Uses sheet metal worker's tools, such as various flicting operations, makes final inspection of com kinds of hammers, mallets, stakes, punches, pliers, pleted jobs, and assumes responsibility for quality dividers, rules, metal gauges, and soldering irons. of all work leaving shops. Approves and directs May mark lay-out on sheet metal according to necessary repairs of shop facilities and equipment blueprints or templates, and oral or written speci and recommends requisition of new equipment and fications. May straighten and aline body frames. disposal of old equipment. Sets up safety and fire Must know the type of seam or joint best suited prevention regulations. Supervises removal of rail for a specific purpose. road wrecks. Must be able to supervise shop foreman, and be SUGGESTED SUBSTITUTE familiar with such shop trades as boilermakers, 478 Ship Fitter blacksmiths, locomotive mechanics, railway car mechanics, car carpenters, painters, pipefitters, CARPENTER, SHIP (202) Diesel mechanics, and electric locomotive repair Builds and repairs wooden boats, barges, tugs, man. Must have a thorough knowledge of the de launches, and other craft and makes repairs on large sign, construction, and operation of all types of ships. locomotives. Builds wooden frames and foundations to sup SUGGESTED SUBSTITUTES port boats under construction or repair. Lines up ] 12 Locomotive Mechanic and trues keel blocks, sets shores, erects stages, and 114 Machinist builds ship's cradles, using carpenter's tools, ax, 342 Master Mechanic and adz. Repairs of keel, ribs planking, decks, cab ins, masts, gunwales, and bulkheads. SOUND PROJECTOR REPAIRMAN (206) May instruct or supervise seamen in making Repairs, rebuilds, adjusts, and maintains in serv minor repairs on ships. May supervise a crew of ice 16-mm or 35-mm sound projectors used in mo ship's carpenters. tion picture work.

44 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Diagnoses faults occurring in sound projection Turns on motor and exposure lamp. Sets filament and determines the source in terms of mechanical current to a predetermined amperage by turning a or electrical malfunctioning. Oils, cleans, and re rheostat knob and reading an ammeter. Sets gal places mechanical parts and makes adjustments vanometer mirror and noise reduction shutters to for smoothness of operation. Inspects electrical their correct neutral starting position by turning wiring and makes repairs and adjustments. knots until edges of image on monitoring screen Uses such testing equipment as ohmmeters and coincide with lines marked on screen. Sets volume voltmeters, and electrician's and mechanic's small controls on amplifiers. Watches monitoring screen hand tools. while a recording is being made and listens to re May make small operating parts for sound pro cording through earphones. -Notes readings of fre jector, using precision tools. quency indicator, tachometer, and lamp current am Should have knowledge of construction and oper meter to see that machine is operating properly. ation of sound projecting equipment and under Lubricates equipment. Makes minor repairs, such stand coordination of sound and picture projection. as replacing tubes. May set up microphones, connect wires-between SUGGESTED SUBSTITUTE microphones and the sound recording equipment, 042 Camera Repairman and drive a sound truck. 207 Sound Recording Equipment Maintenance Man 208 Sound Recorder, Motion Picture SUGGESTED SUBSTITUTE 648 Radio Repairman 415 Electrician, Sound Transmission SOUND RECORDING EQUIPMENT MAINTE SUBMARINE CABLE STATION OPERATOR NANCE MAN (207) (209) Repairs, adjusts, and maintains sound recording Receives cable messages by sound and siphon equipment used in connection with the production recorder tape at a speed of 25 five-letter code groups of motion pictures for training, historical, or pub per minute and transmitting at 20 words per min licity purposes. ute under normal operating conditions. Locates malfunctions, using such portable test Records messages with typewriter; keeps station ing equipment as an ohmmeter, voltmeter, and os logs and message files. cillograph. Repairs such equipment as microphones, Operates and makes minor adjustments of siphon microphone amplifiers, sound mixing panels, main recording equipment, teletype printers and sub amplifiers, attenuators, and recorders. marine terminal equipment for efficient operation. Uses gauges, wrenches, screw drivers, calipers, STENOGRAPHER (213) micrometers, soldering iron, and available precision tools. Court Reporter Medical Secretary Should have knowledge of the principles of elec Takes. dictation in shorthand of correspondence, tricity as they apply to the transmission, recording, branch proceedings, hearings, reports, and other and reproduction of sound. Must be able to read military matters and transcribes notes using a wiring diagrams. standard typewriter. May perform additional office duties such as SUGGESTED SUBSTITUTE filing, indexing, and record keeping. May use 415 Electrician, Sound Transmission stenotype machine to record dictation. May oper ate other office machines. SOUND RECORDER, MOTION PICTURE (208) Should be able to take dictation at a minimum Boom Man Film Recorder, Motion Picture, Sound rate of 75 words per minute and type at a mini mum rate of 35 words per minute. Operates a motion picture sound recording unit Must understand simple grammatical construc which translates sound impulses picked up by mi tion and composition. crophones into light impulses and records them on Civilian experience or training as a stenographer motion picture film in connection with the produc essential. tion of motion pictures for historical, intelligence, or training purposes. STONEMASON (214) Adjusts and prepares recorder for operation. Builds and repairs stone walls, drains, incinera Checks condition of amplifier and noise reducer by tors, and similar structures. use of ammeter and voltmeter. Loads film into re Trims, faces, cuts, and surfaces stones to proper corder and threads it through driving sprocket, size, shape, or finish, using mason's tools such as rollers, and exposure drum in the recording head. hammer, chisel, and pitching tool. Spreads binding

«20Uy8 O—44——4 45 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

mortar and places stones in approximate position SUGGESTED SUBSTITUTES by hand. Moves stones to final position using 228 Survey and Instrument Man hammer, mallet, crow or pinch bar. Aligns stones 230 Surveyor, Topographic with square, level, and plumb bob. 670 Master Gunner, Coast Artillery May drill holes in stone for insertion of metal ties and anchors, using electric or hand drill. SURVEY AND INSTRUMENT MAN (228) Should be able to work from blueprints or Computer sketches. Sets up and operates surveying and fire control Civilian experience as stonemason or bricklayer instruments to locate gun positions, observation essential. posts, or to conduct survey operations relative to SUGGESTED SUBSTITUTE erection of track, buildings, drainage, and water 034 Bricklayer systems. Measures vertical and horizontal angles by mak PUMP OPERATOR (220) ing instrument readings, using transit, aiming circle, or similar instrument. Determines distances by in Pump Station Operator Pumpman, Water strument reading and calculations or by actual Pumpman, Oil measurement with a steel tape. Determines eleva Operates and maintains electric, gasoline, or tion by instrument reading and calculations. Keeps Diesel engine-driven pumps. field notes, entering readings of angles and dis Starts pumps and increases or decreases force of tances as they are observed. Performs routine cal pumping as operating conditions warrant. Pumps culations, using slide rule, or makes arithmetic liquids from one process to another, from storage computations to obtain the azimuth, military grid tanks to processing equipment, or very low levels coordinates, or elevation of points by the solution to higher levels for storage or processing. of right or oblique triangles by ; the substitution Cleans, oils, and greases bearings of engine and of values. Makes sketches of a landmark or par pump. Replaces packing in boxes, adjusts con ticular part of terrain when required. Uses plane trollers, cleans gear boxes, tightens connections, table, alidade, -compass, protractor, and scales to cleans commutators, and replaces brushes and worn plot various surveyed positions on a military map or damaged parts, including spark plugs or in or chart. Performs additional drafting and plane jectors. table work such as making overlays, resections, or restitutions, to record results of surveyed positions SUGGESTED SUBSTITUTES on maps or charts. 014 Automotive Mechanic (Second Echelon) Uses such instruments as transit, aiming circle, 081 Engineman, Operating range finder, BC scope, prismatic compass, battery 727 Water Supply Technician commander's telescope, open sight alidade, pro tractor, scales,, slide rule, plane table, and steel SURVEYOR (227) tape. Supervises a survey party engaged in determin SUGGESTED SUBSTITUTE ing data pertaining to points, elevations, lines, 645 Fire Control Instrument Operator, FA areas, and land profiles in connection with such activities as the preparation of maps, establishment of artillery base lines, and construction of railway MEDICAL EQUIPMENT MAINTENANCE TECH spurs, roads, bridges, and buildings. NICIAN (229) Uses transit, alidade, level, stadia rod, aneroid Repairs and maintains medical equipment, such compass, and other surveying instruments to obtain as X-ray, physiotherapy, operating room, and lab the precise elevation or location of a point. Keeps oratory equipment, in a military medical installa complete field notes. Make algebraic and trigo tion. nometric calculations, using logarithms, slide rules, Examines and tests equipment to locate elec and engineering tables. Adjusts surveying instru trical or mechanical defects. Dismantles equipment ments to keep them accurate. and repairs and replaces parts, using mechanic's May map a maneuver area, airdrome installa and electrician's hand tools. Makes adjustments tion, camp site area, or cemetery. May align and and reassembles unit. stake out roads and sidewalks. May verify aerial May act as technical advisor in the installation, photography surveys and may draw maps. operation, and maintenance of equipment. 46 30 Jun 45 TM 12-427 C 2

SUGGESTED SUBSTITUTES ment. Must understand arm signals which indicate 098 Instrument Repairman, Nonelectrical various movements in maneuvering horse-drawn 322 Refrigeration Mechanic vehicles. 338 Instrument Repairman, Electrical SUGGESTED SUBSTITUTE SURVEYOR, TOPOGRAPHIC (230) 563 Horse Artillery Driver

Surveyor, Party Chief TELEGRAPH OPERATOR (236) Sets up and operates such surveyor's instruments Station Agent, Railway as transit, level, stadia, astralabe, and theodolite to Transmits and receives messages in International establish angles, distances, geographic positions and Morse code, using telegraphic equipment in an elevations to locate various points on the terrain. Army organization. Keeps field notes of instrument observations. Depresses and releases telegraph key with fingers Computes and adjusts traverse, azimuths, elevations, to send coded messages in a series of dots and distances, and coordinates. Computes azimuth, posi dashes. Listens to telegraph buzzer to receive coded tion, latitude, and longitude from solar and stellar messages. Maintains station log, recording time of observations. Computes grid coordinates from lati transmission and receipt of messages, operator's tude and longitude. names, and other pertinent data. Performs clerical May supervise a survey party. May do plane work incident to operation of telegraph,, such as table work. completing various reports and forms. May assist- Must be able to assemble and interpret aerial in setting up telegraph switchboard, key, and photographs. receiver. SUGGESTED SUBSTITUTES May operate track switches and railway signals 227 Surveyor from a signal tower to control movements of mili 228 Survey and Instrument Man tary railway trains. 670 Master Gunner, Coast Artillery Must be able to transmit and receive messages at the minimum rate of 13 standard words per TAILOR (234) minute. SUGGESTED SUBSTITUTE Foreman, Clothing Repair Repairs worn or damaged clothing, sewing by 069 Dispatcher, Railway hand and using a foot-powered or electrically 740 Radio Operator, Intermediate Speed driven sewing machine, darner, and button ma 766 Radio Operator, High Speed, Manual chine. 776 Radio Operator, Low Speed Cuts cloth, using patterns and replaces worn or damaged sections of clothing. Repairs all types of TELETYPE OPERATOR (237) Army clothing, such as shirts, caps, pants, blouses, Telegraph Printer Operator; Teletype Switchboard field jackets, and overcoats. Operator SUGGESTED SUBSTITUTE Operates a teletype or other kind of telegraphic 200 Sewing Machine Operator typewriter for transmission and reception of mes sages. TEAMSTER (235) Operates a telegraph printer switchboard for in Wagoner terconnection of teletypewriter stations. Operates Drives a team of horses or mules consisting of equipment using perforated tape for transmission one or more pairs in draft. and reception. Perforates and reads tape for auto Harnesses and unharnesses team. Checks and ad matic transmisison of messages. Keeps a log of all justs harness during the march to prevent occur messages received and transmitted. rence of sores or skin abrasions. Checks cargo ad Performs preventive maintenance by inspecting justment and condition of vehicle. Waters, feeds, and keeping equipment clean and making simple and cleans animals. Removes animals to cover dur replacement of parts. ing emplacement and remains with them. Must be able to transmit messages manually at a Must be able to care for animals under field or minimum speed of 30 clear text words (5 strokes post conditions. Must be able to assemble, disassem per word) or 150 strokes per minute, without error ble, adjust, and clean harness and related equip- for a minimum period of 1 minute out of a 5-minute

AGO 283A 47 TM 12-427 30 Jun 45 C 2 period. Must be able to make margin adjustments. places any of a large variety of parts when worn Must be familiar with Army organization; phonetic or broken, using screw drivers, pliers, and special alphabet; Army method of hand printing; safe teletype tools. guarding cryptographic and transmission security; May repair, service, and maintain typewriters. wire teletype and radio teletype procedures. Must have knowledge of circuits and equipment commonly employed for telegraphic transmission. SUGGESTED SUBSTITUTES 213 Stenographer 805 Cryptographic TIRE REBUILDER (240) 405 Clerk-Typist Technician 667 Message Center Performs various tasks in connection with vul Clerk canizing, retreading and recapping of pneumatic tires, and repair of inner tubes in a tire repair shop. LINEMAN, TELEPHONE AND TELEGRAPH Removes tread from tire using buffing wheel and (233) rotating wire brush. Rebuilds treads by cementing layers of rubber tread stock to fabric and rolling Installer-Repairman, Railway with hand roller to secure good adhesion. Molds Installs, repairs, and maintains permanent and new treads on tire by placing tire in mold and semipermanent military telephone and telegraph heating to proper temperature for curing raw rubber. wire system's. May vulcanize breaks and tears in tires, using Locates sites for telephone and telegraph poles hand knife, scissors, hand roller, and vulcanizer. and wires. Erects poles. Climbs poles, using climb Must have knowledge of rubber compounds and ing tools and aids. Strings wires, wiresplices, and retread requirements for various size and special ties. Provides static protection and sets up guys duty tires. and braces. Corrects causes of short circuits and splices broken lines. Locates, erects, and maintains TOOLROOM KEEPER (242) field telephones and switchboards. Operates heavy line construction equipment such as earth-boring Performs various duties in connection with the machine, pole jacks, derricks and winches. maintenance, issuance, and storage of tools in tool Equipment includes pole climbing irons and rooms of military repair shops. safety belt, wire reel, test set consisting of hand Issues tools to workers on memorandum receipt, phone, hand cranked magneto, and dry cells, and or daily charge ticket. Maintain stock cards show electrician's hand tools. ing stock number, quantity credited, and distribu Must be familiar with the standard operating tion among shop personnel. Makes up statement rules and regulations governing wire communica of charges against individuals for items lost or tion systems of organization to which assigned. damaged. Arranges tools systematically in bins or Should be able to read blueprints and maps. rack compartments. Periodically inspects tools and prepares list of tools needing repairs. Makes minor SUGGESTED SUBSTITUTES repairs to tools such as grinding of drill bits, sharp 165 Lineman, Power 641 Field-Lineman ening axes. saws, and knives, and replacing hammer handles. TELETYPE MECHANIC (239) Must be familiar with supply room procedure and regulations governing accountability, respon Installs, inspects, maintains, and repairs teletype sibility, and maintenance of stock record accounts. machines, including receiving, transmitting, relay Must be familiar with nomenclature of tools and units, and auxiliary equipment. shop procedure. Test-operates machine to observe its functioning SUGGESTED SUBSTITUTES and determine necessary adjustments or repairs. Measures spring tensions in various parts of the 348 Parts Clerk, Auto- 835 Supply Clerk equipment with finely calibrated scales to correct motive 848 Parts Clerk. Arma- tensions in accordance with prescribed standards. 457 Shop Clerk ment • Measures the separation of electrical contact points GEODETIC COMPUTER (243) with small metal gauges to adjust same. Cleans and lubricates entire machine using oil and brush. Topographical Computer Traces electrical faults such as broken or shorted Performs mathematical computations, using loga circuits, with voltmeter and refers to wiring dia rithmic and natural function tables in the construc grams in testing continuity and resistances. Re- tion of topographical maps or charts.

48 AGO 2SKA SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Calculates latitude, longitude, angles and areas FOREMAN, WAREHOUSE (252) from field notes made by survey parties. Com Supervises the receipt, storage, and issuance of putes positions from triangulation or primary military supplies and equipment in a warehouse. traverse, stellar or solar observation notes. Com Supervises the receiving, handling, and moving putes intersections, point locations and coordinates. of supplies and equipment and the preparation and Equipment used includes drafting instruments and maintenance of stock records. Supervises the meth calculating machines. ods of storing used to protect the supplies and Must be able to compute azimuth and position equipment, checking the blocking, bracing, tiering, from solar or stellar observations. Must be able and general distribution of supplies in the ware to make involved arithmetic and algebraic compu house. Supervises the issuance of supplies and equip tations. Must have a general knov/ledge of drafting, ment from the warehouse. Makes inventory checks, including mechanical drawing, geometric construc anticipates shortages, and prepares requisitions to tions, lettering and conventional symbols used in maintain an adequate supply of material. Assigns topography and surveying. enlisted personnel to duties. Must know Army regulations governing the re SUGGESTED SUBSTITUTES ceipt, storage, and issuance of military property. 076 Draftsman, Topographic Must be able to plan the distribution of supplies 227 Surveyor and equipment in the warehouse and on loading 228 Survey and Instrument Man docks so as to avoid confusion. 230 Surveyor, Topographic 1076 Observation Draftsman WELDER, COMBINATION (256) Burner, Acetylene Welder, Electric Arc CARGO GEAR MECHANIC (246) Welder, Acetylene Fuzes metal parts to fabricate metal articles and Stores and issues all gear required by a unit to repairs broken or cracked metal objects by means of load and unload ships. electric-welding or acetylene-welding apparatus in Receives, stores, issues and maintains records of an Army repair or machine shop. cargo gear such as tow motors, fork lifts, blocks, Places parts to be joined or object to be repaired slings, fids, marlin spikes, pallets, hooks, and ropes on a flat surface and wires, clamps, or otherwise used to load and unload ships. Sharpens tools, holds objects in position. Assembles welding appa cleans equipment and keeps gear in good repair ratus and applies heat to metal until it melts, at the by replacing and refitting parts. same time applying a metal rod to the molten area May supervise a group of men in repairing cargo to supply excess metal needed to form weld. gear. May preheat parts to be welded with torch before welding to obtain better weld. May heat treat after SUGGESTED SUBSTITUTES welding. 014 Automotive Mechanic (Second Echelon) Equipment includes acetylene torch, cutting as 242 Toolroom Keeper sembly, and set of tips, hand-operated lever shears, electrically powered grinder and burnishing ma VETERINARY TECHNICIAN (250) chines, hand-operated bead former, electrically pow ered tubing saw, combination rule and set, dividers, Surgical Technician, Veterinary Veterinary NCO wooden mallet, wrenches, and electric drill. Mate Cares for and assists in the treatment of sick or rial includes welding and soldering fluxes, asbestos wounded animals. sheeting, angle iron, and aluminum, bronze, cast Cleanses, treats, and applies dressings as directed iron, steel, silver soldering, and lead soldering rods. by veterinary officers. Prepares animals for opera Must know properties and identity of metals. tions and sterilizes instruments. Prepares veterinary Must be able to read blueprints. Must be able to and clinical records, and sick and wounded report. plan and construct jigs for holding parts together May administer anesthetics under supervision of during welding process. veterinary officers. May supervise stablemen in the SUGGESTED SUBSTITUTES care of sick and wounded animals. May assist in 030 Boilermaker the inspection of forage for animals. May assist in 201 Sheet Metal Worker the inspection of meat and dairy products. Should be thoroughly familiar with principle of SUBSTATION ELECTRICIAN (258) , animal sanitation, and be able to observe and diag Electrician, Power Plant nose symptoms of diseases of animals. Installs, maintains and repairs electrical substa- 49 MILITARY OCCUPATIONAL CLASSIFICATION' OF ENLISTED PERSONNEL tioii equipment used to control distribution of elec SUGGESTED SUBSTITUTES tric current. 095 Central Office Repairman Installs and maintains substation switchboards. 097 Installer-Repairman, Telephone and Telegraph Repairs, adjusts, and calibrates electric high volt 115 Automatic Telephone System Maintenance Man age current relays. Repairs and adjusts circuit breakers, regulators, transformers, protective and OCCUPATIONAL COUNSELOR (262) controlling apparatus and sectionalizing switches. Assists in aiding soldiers who are about to be dis Uses electrician's tools. charged in finding proper employment, or in ob Must be familiar with standard operating rules taining additional education or training; or in de and regulations governing military railway electric termining proper military assignments for soldiers transmission systems. Should have thorough knowl returned from combat. edge of substation operation from mechanical point Studies each case to determine suitable occupa of view. tions either in the Army or in civilian life which soldier might pursue, taking into consideration such SUGGESTED SUBSTITUTES factors as handicaps or limitations, training, expe 078 Electrician rience, interest, and environmental conditions of 184 Substation Operator assignment or employment. Administers or pre scribes tests to assist in determining capacity, emo WELL DRILLER (259) tional stability, and occupational aptitude, and notes Sets up and operates well drilling machinery to interests of individuals as revealed by such activi obtain water or oil in the field. ties as hobbies, books read, or participation in Sets up well drilling rig, hoists casing in position sports. Evaluates results of tests and other data, over well, lowers drill stem into casing, bolts drive analyzes soldier's "Military Occupational Special clamp around drill stem, and manipulates levers ties" for characteristics convertible to other military to control drill and drive casings. Threads addi or civilian work. Takes into consideration handicaps tional casings and drives them into well as nole or limitations, and makes recommendations for as is deepened. signment or employment, or for additional training or education. May supervise a crew of well drillers. May refer soldier to proper authorities within SUGGESTED SUBSTITUTE Army for-further consultation. 189 Rigger Should have a thorough knowledge of occupa tions, essential worker characteristics, and oppor WIRE CHIEF. TELEPHONE AND TELEGRAPH tunities for employment. Experience in phychologi- (261) cal examining, vocational guidance, or employment Chief Installer counseling or equivalent training and experience Telephone Inspector very desirable. Wire Technician, Telephone and Telegraph (AAF) SUGGESTED SUBSTITUTES Supervises the installations, testing, repair, and 275 Classification Specialist general maintenance of central office and other tele 289 Personnel Consultant Assistant phone equipment in a military communications 290 Personnel Technician system. Supervises the installation of switchboards, tele PSYCHIATRIC SOCIAL WORKER (263) phones and auxiliary equipment, and the operation Conducts interviews with maladjusted soldiers to of the switchboards. Performs tests to locate line secure clinical material to aid in diagnosis and troubles such as cross, ground or short circuits treatment of the difficulty. using Wheatstone bridge or voltmeter. Directs re Prepares case histories for psychiatrist, empha pairmen in elimination of troubles and repair of sizing the interplay of physical, intellectual, cons equipment. Maintains records pertaining to cables, cious, and unconscious factors as they pertain to terminal boxes, central office power equipment and patient's difficulty in order to provide a basis for maps lay-out of telephone system. Instructs per differential treatment approach. Under the direction sonnel in installation and maintenance of equip of the psychiatrist, assists in therapy work with ment. Directs and coordinates work of subordinates patients. by assigning tasks, directing procedures and issuing May obtain additional information on soldier's instructions. social history from Red Cross or other agencies to Must be familiar with installation and operation aid in understanding present difficulty and to assist of all central office equipment. in post-discharge planning.

50 5 Feb 46 TM 12-427 C3

Should have graduate school training and expe Makes complete translation of foreign military rience in psychiatric social work or equivalent train documents and other material or letters which may ing and experience. have a bearing on military affairs. Gives an exact statement of the items expressed, or translates Eng SUGGESTED SUBSTITUTES lish into a foreign language using idiomatic expres 262 Occupational Counselor sions peculiar to the language. 275 Classification Specialist Civilian experience in translating or interpreting 289 Personnel Consultant Assistant foreign languages or equivalent military training 290 Personnel Technician required. X-RAY TECHNICIAN (264) SUGGESTED SUBSTITUTES Radiology Technician (AAF) 320 Interpreter Takes X-ray photographs of parts of the human 538 Voice Interceptor (Designated Language) body with X-ray machines for use in diagnosing and treating injuries and disease. ACCOUNTANT (268) Positions patient under X-ray according to part Fiscal Accountant of body exposed, and depending upon thickness of Cost Auditor bones and tissue, determines proper voltage and Performs accounting and auditing duties in a amperage required, distance of patient from ma fiscal or contract readjustment organization. chine, and length of exposure. Manipulates levers Maintains fiscal and cost accounting records, pre which control duration and intensity of exposure. pares operating control statements on the condition Develops films in photographic darkroom, pre of appropriated funds, compiles data for preparation paring solutions and immersing negative, in suc of budget estimates, and reviews procurement docu cession, in developing tank, rinse water, fixing tank, ments for determining the propriety of proposed and in wash solution. Makes minor repairs to X-ray machine such as replacing fuses, switches, circuit expenditures of appropriated funds. Assists in or breakers, wires and X-ray tubes. conducts the audits of all forms of War Department Must have knowledge of anatomy, X-ray tech contracts with contractors engaged in supplying niques, and darkroom methods. materiel and services and such auditing as is neces sary in the repricing, renegotiation and termination SUGGESTED SUBSTITUTES of such contracts. 409 Medical Technician Graduation from an accredited college or uni 657 Medical Aidman versity with major in accounting or from a recog nized school of accounting or the equivalent in prac YARDMASTER (265) tical experience essential. Certification as certified Assistant Trainmaster Yard Foreman public accountant or experience in -industrial cost Supervises the make-up and break-up of trains in accounting very desirable. a military railroad yard or in over-the-road oper (For account clerk activities use SSN 055.) ations. Manages and directs train traffic in military rail COOPER (270) road yards and in over-the-road runs. Investigates complaints concerning poor train service. Maintains Builds and repairs barrels, buckets, casks, and car records and reports. kegs used in the packing, storing, or shipment of Must have knowledge of rules and regulations supplies and equipment. governing operation of military railways. Plugs holes with wood. Repairs leaking stave joints by loosening hoops and forcing flagging SUGGESTED SUBSTITUTES between staves, using various hand tools. Replaces 047 Traffic Man, Railway broken or cracked staves by loosening hoops, shap 058 Conductor, Railway ing end of inserted stave to fit head of barrel, and tightening hoops. Replaces defective barrel heads TRANSLATOR (267) of hoops. Translates written material from a foreign lan guage into English and from English into a foreign SUGGESTED SUBSTITUTE language. 050 Carpenter, General

AGO 3006A 51 TM 12-427 5 Feb 46 C3 LONGSHOREMAN (271) releases, historical records, technical and field man uals, bulletins and circulars and similar informa Dock Boss Header Hatch Foreman Stevedore Foreman tional materials. Hatch Tender Walking Boss May read, analyze, revise, rewrite and correct military manuscripts, prior to publication or re As member of crew, loads and unloads military lease through military channels. supplies and equipment from ships. May appear before groups of individuals to ex Removes hatch cover and beams by hand or brin- plain manuals, bulletins, circulars, and military ac dle slings and piles cover and beams on deck. Moves tivities and programs. cargo in hold and on wharf by hand, conveyor. Should have a knowledge of Army organization hand truck, and platform truck. Uses slings, pallets, and be able to interpret rules and regulations per hooks, ropes, and other gear to life draft into or tinent to field of specialization. Should have ability out of hold. Stows cargo in hold, using bracing to present information clearly. Training or ex and dunnage, to protect ship and cargo and to pro perience in education, journalism or technical fields vide air courses for cargo. Uses hand signals to di related to field of specialization very desirable. rect winchman in hoisting and lowering platforms, nets, and slings loaded with cargo from dock or CLASSIFICATION SPECIALIST (275) hold. Replaces beams and hatch cover upon com pletion of stowing cargo. Stows bulky cargo on deck Interviews enlisted men to obtain civilian and using bracing, dunnage, and tarpaulins and lash military job history and other related information ing cargo securely to deck. to be used for classification and assignment of May supervise a crew of longshoremen in cargo military personnel. handling. Obtains and records soldier's personal history, Must know knots, splices, rigging and correct education, aptitudes, interests, hobbies, civilian methods of stowing various types of cargo. Must work history, and military experience. Periodically be above average in strength. checks the military occupational specialty and duty status against the qualification card of each man in SUGGESTED SUBSTITUTE the organization and ascertains whether military 188 Duty Soldier II personnel are classified and performing duties com mensurate with their military or civilian training. KEY PUNCH MACHINE OPERATOR (272) May administer and grade group tests of intelli Operates a manual or electric key punch machine. gence and aptitude and record test data on qualifi to punch holes in tabulating cards used in recording cation records. May prepare reports on classifica accounting and statistical data. tion and assignment. May conduct interviews for re- Places cards to be punched in machine and sets classification and assignment of enlisted personnel. carriage for perforating operation. Following writ Must be familiar with all regulations, manuals and procedures pertaining to Army classification ten copy, punches corresponding numbers or sym and with methods of punching, coding and mainte bols on the machine keyboard, transcribing written nance of officers' and enlisted men's qualification information into perforations on tabulating cards. records. Should be familiar with the requirements SUGGESTED SUBSTITUTES of all jobs in the unit to which assigned.

055 Clerk, General SUGGESTED SUBSTITUTES 405 Clerk-Typist 262 Occupational Counselor 289 Personnel Consultant Assistant INFORMATION SPECIALIST (DESIGNATED FIELD) (274) LEGAL CLERK (279) Editor Public Relations Assists Judge Advocates, Legal Officers, Claims Historical Technician Writer Officers, and Legal Assistance Officers in the per Technical Writer or Reporter formance of their duties. Editor Performs such duties as researrh in military and Performs various duties in connection with the civil laws, regulations and other sources of author collection, preparation, and dissemination of in ity; furnishing legal advice in appropriate cases; formation such as public relations material, news preparing charges, records of proceedings, orders,

52 AGO 3006A 5 Feb 46 TM 12-427 C3 opinions, reports, documents, correspondence and power transmission systems. Must have knowledge other papers required in the conduct of the busi of third rail construction and operation. ness of a military legal office; handling the distribu tion of messages, files, supplies and other matters SUGGESTED SUBSTITUTES of office routine. 078 Electrician Civilian experience as a lawyer or law clerk re 181 Signal Mechanic, Railway quired. Knowledge of typing desirable. OFFICE MACHINE SERVICEMAN (282) THIRD RAIL REPAIRMAN (281) Adjusts, services, and makes repairs to one or Maintains and repairs third rails (550 to 650 d-c more standard types of office machines, such as the voltage) used for transmission of power in opera adding machine, calculator, multigraph, multilith, tion of military electric railway systems. mimeograph and typewriter. Replaces defective rails and connects them for Diagnoses the defect by inspection, disassembly, power. Conducts tests to check available power and or operation of the machine. Tightens, loosens, sets, constructs protection boards along rails. Locates and otherwise adjusts gears, guides, pinions, and disconnecting switches. Insulates high tension wires. other parts, using such hand tools as wrenches, Connects electric feeder cables. pliers, and screw drivers. Removes, repairs, or Tools and equipment used include soldering replaces defective parts. Cleans and lubricates iron, solder, hammer, pliers, screw driver, wrenches, machine. wire, wire splices and insulation, and friction tape. Must be familiar with standard operating rules SUGGESTED SUBSTITUTE and regulations governing military railway electric 239 Teletype Mechanic

AGO 3006A 52A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

ATHLETIC INSTRUCTOR (283) and props are in proper place at the proper time. Physical Reconditioning Instructor Assists in rehearsing of scenes. Organizes competitions, and instructs military May direct production, choosing cast, instructing actors in interpretation of parts, planning details personnel in the rules and playing of sports. of settings and costumes, and supervising shooting Directs groups in health building exercises and calisthenics. Supervises the conditioning of men in of scenes. Must be familiar with technical problems of such athletic activities as baseball, basketball, vol motion picture production. ley ball, and all other sports. Acts as coach or ref eree in athletic meets. Civilian experience with motion picture company May direct convalescents in the execution of re essential. medial exercises and physical activities prescribed (In Army Air Forces, this classification will be used to cover motion picture technicians such as by medical officers. film editor, sound transmission man, motion picture CAMERAMAN, ANIMATED MOTION PICTURE cameraman, animation, process background super (285) . visor, or other technical duty.) Operates a vertically mounted motion picture SOUND EDITOR, MOTION PICTURE (287) animation camera to produce animated motion pic Sound Cutter tures used in the instruction and training of Selects, splices, and edits the sound tracks of a personnel. Moves camera to desired position above table top motion picture film in connection with the produc and focuses the lens. Lays basic drawing on table tion of motion pictures for historical, intelligence, and aligns its perforations with alignment pegs. and training purposes. Lays and aligns celluloids over basic picture and Studies picture to decide what sound effects, mu covers with glass. Observes picture through view sic, or background effects are needed to make the finder, moves easel, and adjusts camera and dia picture effective. Selects from library sounds to be phragm aperture, until proper alignment, focus, and used. Runs picture on moviola and marks exact exposure are obtained. Photographs background, spot where sounds are to be utilized. Makes up cue titles, charts, drawings, changing celluloids one at sheet to indicate sequence of sounds he has put in, a time to achieve progression of movement. Pro what track they are on, and footage of movie at duces special effects, .such as fade-ins, fade-outs, and point of insertion. Runs picture on synchronizing double exposures, or a combination of effects. machines, stopping at marked footage and splicing May advise animation artists on short cuts and in sound effects at same point on as many sound ways of producing contrasts and other photographic tracks as are required. Runs film and sound tracks qualities. in recording room to note discordances. between Must know the technique used in accomplishing sounds and film, making necessary corrections. animation of motion pictures. Must understand Must be thoroughly familiar with problems of light and shade graduations on films to advise artists motion picture sound editing, being able to syn on proper contrasts. Must know film processes. chronize various sound effects to prevent discordant chords. SUGGESTED SUBSTITUTE SUGGESTED SUBSTITUTE 043 Cameraman. Motion Picture 131 Film Editor. Motion Picture MOTION PICTURE PRODUCTION TECH PLAYWRIGHT (288) NICIAN (286) Script Writer Assistant Director Motion Picture Tech- Writes scenarios and scripts for theatrical, radio, Assistant Producer nician (AAF) or motion picture productions for entertainment or Assists in supervision and coordination of ad instruction of military personnel, or for publicity ministrative or technical operations of a motion pic purposes. ture unit. Creates plots and sequences with instructional Secures equipment, personnel, and props for pro narrative, or adapts fictional, nonfictional, or his duction preparing necessary requisitions. Arranges torical material to dramatic form. Bears in mind for transportation of crew, actor personnel, and the characteristics of the medium for which he is equipment. Prepares shooting schedule, checks con writing and forms his presentation and script ac sistency of sets, notes camera angles, keeps record cordingly. Indicates desired camera procedure, of exact properties used on each set, and prepares method of presentation, sound effects, and back daily production report. Makes certain all actors grounds. MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

Civilian experience in writing or adapting scripts CHEMIST (292) or scenarios for radio, stage, or motion pictures Analytical Chemist Photographic Chemist ;•('•.•; i.iired. Chemical Inspector Toxicologist Conducts investigations and research in the vari PERSONNEL CONSULTANT ASSISTANT (289) ous branches of chemistry dealing with such sub Psychological Assistant ject matter as toxic and nontoxic gases, explosives, Assists in the adjustment of individual personnel and photographic materials. matters of a psychological nature and in the special Makes inspections of chemical warfare materials ized training and rehabilitation of the mentally or to determine their serviceability. Supervises de physically limited, illiterate and non-English speak struction of unserviceable material. Examines en ing enlisted men. emy chemical materiel and devises protective equip ment. Prepares reports on enemy materiel for use Administers and evaluates psychological, mini of intelligence agencies. Examines chemical prop mum literacy, and other individual and graup tests. erties of compounds and solutions and determines Interviews enlisted men concerning problems of a proper concentrations required. psychological nature and submits reports of find Uses chemicals and laboratory equipment such as ings and recommendations. Assists classification flasks, beakers, burettes, condensers, graduates, personnel on matters of a psychological nature in glass and rubber tubing, combustion furnaces, por volved in the classification work of a unit. May celain boats, gas analysis apparatus, carbon appa assist, in the construction and evaluation of psycho ratus, field sampling apparatus, and analytical logical tests. balances. Civilian experience in educational, clinical, voca tional, or industrial psychology required. SUGGESTED SUBSTITUTE 411 Chemical Laboratory Assistant SUGGESTED SUBSTITUTES 262 Occupational Counselor CHEMICAL ENGINEER (293) 263 Psychiatric Social Worker Performs specialized work in chemical engineer ing as applied to chemical warfare and the use PERSONNEL TECHNICIAN (290) of toxic gases. Designs chemical equipment. Sets up and ar Assists in the classification and assignment of ranges chemical laboratories. Supervises organic enlisted men and supervises classification personnel and inorganic chemical processes. Performs re in the maintenance of officer's and enlisted men's search in toxic and nontoxic gases, explosives, and qualification cards, the requisitioning of personnel chemicals. Designs and devises equipment for pro replacements, selection of qualified enlisted men tection against and neutralization of chemical for special school training, and the preparation of agents. Prepares reports on enemy materiel for correspondence and reports pertaining to personnel use of intelligence agencies. classification and assignment. Uses chemicals and laboratory equipment such Interviews or supervises interview of enlisted as flasks, beakers, burettes, condensers, graduates, men for classification purposes, checking for com glass and rubber tubing, combustion furnaces, por pleteness of forms, recording and coding additional celain boats, gas analysis apparatus, carbon appa data, or determining new specialties. Compiles da^a ratus, field sampling apparatus, and analytical and maintains required personnel records and pre balances. pares inventories of specialists and informational rosters. SUGGESTED SUBSTITUTE May administer various tests such as Army Gen 292 Chemist eral Classification Test. Mechanical Aptitude Test, ARTIST (296) Clerical Aptitude Test. Radio Operation Test, and Film Strip Artist various trade tests. Makes paintings, illustrations, lay-outs, sketches, Should have college training and experiences in posters, or designs in connections with various personnel administration, business or public admin activities, such as decoration, publication, training, istration, psychological or vocational counseling. and propaganda. Visualizes and makes comprehensive lay-outs of SUGGESTED SUBSTITUTES training aids, or contributes to the completion of 275 Classification Specialist the design. Prepares cartoons, posters, or other 289 Personnel Consultant Assistant types of illustration. Lays out and colors graphs, 54 5 Feb 46 TM 12-427 C3

charts, maps, signs, or similar materials. Retouches as engine lathe, vertical boring mill, grinding ma photographic points to be used in film strip produc chine, milling machine, planer, shaper, and drill tion. Decorates walls of buildings with murals or press. Checks dimensions of machined part against other panoramic scenes. blueprint, using micrometers, gauges, and calipers. Should be familiar with air brush technique and Cleans and oils machine used iind sharpens cutting have basic knowledge of retouching photographic tools. prints. May operate other shop machines such as band INVESTIGATOR (301) saw, buffer, power hack saw and tapper. May ma chine a variety of metals, such as steel, cast iron Counter Intelligence Corps Agent aluminum, and brass. Counter Intelligence Corps Special Agent Must be able to read blueprints. Criminal Investigator Security Intelligence Agent ELECTRIC MOTOR REPAIRMAN (304) Security Intelligence Special Agent Installs, inspects, tests, and repairs electric mo Technical Intelligence Specialist tors and accessory equipment in a military repair Conducts investigations of crimes, accidents, sabo or machine shop. tage, sedition, espionage and subversive activities in Tests and repairs armatures and coils. Inspects which military and civilian personnel or property rewound armatures for broken wires and connects are involved. armature coils to commutator segments. Repairs Collects and safeguards evidence, procures in electric motors used to power machine tools such formation on individuals, questions witnesses and as lathes, drill presses, and bench grinders. Refaces arrested persons, examines pertinent records, and commutators, using fine sandpaper. Repairs start prepares case reports and summary reports; coop ing devices and switches. Reassembles motor after erates with civilian police agencies in apprehending repairing defects and tests for electrical fault or tim criminals and solving crimes involving military per ing to insure adequate operation. sonnel or property; assists in collection, evaluation, Equipment includes electric soldering iron, solder, interpretation, and distribution of information per pliers, wire cutter, and screw driver. taining to United States' personnel and materiel em Must understand the theory of electric motors, ployed in active theaters of operations. May inves including design, construction, and operation. tigate fires, explosions, and accidents. May take photographs of objects, places, and individuals. SUGGESTED SUBSTITUTES May recover lost, stolen, or abandoned property. 078 Electrician Security Intelligence duties include making loy 338 Instrument Repairman, Electrical alty and character investigations of civilian and mil 912 Electrician, Automotive itary personnel for positions of trust and conduct ing personnel security inspections in vital war plants. TELEPHONE OPERATOR (309) Counter Intelligence duties in combat zones and Operates a telephone switchboard to relay in in area occupied by United States military forces coming or outgoing messages to or from branch include tracing rumors and propaganda sources, per telephones in an Army camp, post, station head forming field security missions and surveys, and es quarters, or other installation. tablishing security systems. Makes connections with outside lines for outgo MACHINE OPERATOR (DESIGNATED ing calls. Manipulates keys and cords 19 receive MACHINE) (302) incoming calls, to make connections, to relay calls, and to ring phones. Boring Mill Operator Milling Machine May perform a variety of clerical tasks when Drill Press Operator Operator not engaged in handling calls. May operate a cord Engine Lathe Operator Planer Operator less telephone switchboard. Grinding Machine Op- Shaper Operator erator SUGGESTED SUBSTITUTE 055 Clerk, General Operates one or more machines used in machine shops to change the shape of metal parts or tools. AUTOMOBILE SERVICEMAN (316) Sets up machine, working from blueprints or drawings. Selects correct cutting toolj clamps metal Construction Equipment Serviceman (AAF) part to machine-table, and operates such machines Gas and Oil Man

AGO 3006A 55 TM 12-427 5 Feb 46 C3

Performs various service duties in conditioning INTERPRETER (320) and maintaining automotive vehicles or construc tion equipment in efficient operating condition. Interprets foreign language into English or Eng Lubricates vehicles and equipment by means of lish into a foreign language to assist military per hand operated or pressure lubrication guns and sonnel and others in conversing with individuals oil sprays. Drains old lubricant reservoirs and re who are unable to speak the same language. fills with new lubricant. Checks storage batteries Must be able to speak foreign language and Eng for proper water level, voltage and specific gravity lish with equal fluency. reading, using hydrometer and voltmeter. Adds dis tilled water to battery cells. Dismounts and mounts SUGGESTED SUBSTITUTES automobile tires and repairs punctured tubes by 267 Translator applying standard rubber patches. Refuels motor 538 Voice Interceptor (Designated Language) vehicles. May make minor repairs and replacement of parts REFRIGERATION MECHANIC (322) such as fan belts, radiator hoses, broken spark plugs, windshield wipers, and other common accessories. Installs, maintains, and repairs and operates re Uses automobile mechanic's hand tools and lu frigerating equipment used to manufacture ice or to bricating equipment. preserve perishable foods and medical supplies in Must be familiar with lubricating systems of vehi a fixed or mobile refrigeration unit. cles and equipment and be able to select proper Installs and assembles condensers, compressors, types of oils and greases to be used. and motors. Assembles and connects pipes and Military experience in servicing automotive ducts. Overhauls and repairs pumps, compressors, equipment or equivalent civilian experience re and piping. Detects leaks, using appropriate de quired. tector for particular refrigerant employed. Stops leaks by installing new piping, packing, valves, and CONSTRUCTION EQUIPMENT MECHANIC pipe couplings. Disassembles various parts, such as (319) valves, springs, brushes, and connections, to note their condition. Foreman, Construction Equipment Repair Uses hand tools, such as wrenches, pliers, and Tractor Mechanic pipe cutting and threading tools. Must know general principles of the operation of Inspects, repairs, and tests construction equip refrigeration plants. ment such as bulldozers, angle dozers, road scrap ers, ditching machines, road graders, road rollers, SUGGESTED SUBSTITUTES cranes, power shovels, air compressors, tractors, 164 Plumber trailers, fire pumpers, concrete mixers, and rock 304 Electric Motor Repairman crushers in a mobile or fixed repair shop. Examines visually or operates equipment to de LUMBERJACK (329) termine causes of faulty operation. Locates trouble and repairs entire unit or subassembly such as en Performs a variety of duties in logging oper gine, track, chassis, blades, controls, booms, hop ations. pers, and other parts by tearing down, cleaning, Tops trees to be felled, chops or saws down trees, adjusting, and installing new or rebuilt parts and trims branches from tree using ax, and saws logs to saw mill lengths. Moves logs to log pile using reassembling unit or subassembly. cant hook. Attaches chain from bulldozer to logs Uses mechanic's hand tools, crowbars, hoists, and skids logs to loading point. Works as top loader gauges, calipers, and rulers. on trailer or truck, loading and securing logs with Must have knowledge of the operation of con chains. struction equipment. Uses ax, crosscut saw, and cant hook. Must be above average in strength and know SUGGESTED SUBSTITUTES simple rigging. 013 Diesel Mechanic 905 Mechanic, Engine, Wheel Vehicle (Gasoline) SUGGESTED SUBSTITUTE 909 Mechanic, Engine, Track Vehicle 188 Duty Soldier II

AGO 3006A 5 Feb 46 TM 12-427 C3 FOREMAN, AUTOMOTIVE REPAIR SHOP SHOP MAINTENANCE MECHANIC (341) (337) Millwright Chief Mechanic Plant Maintenance Mechanic Supervises, instructs, and lays out work for en Installs, maintains, and repairs machinery, ma listed mechanics, related specialists, and their help chine tools, and other related shop equipment in a ers in the inspection, repair, or rebuild of military military machine shop, repair shop, or other main motorized vehicles and accessory equipment. tenance center. Supervises the inspection of incoming equipment Makes regular inspection of shop machinery and to determine nature and extent of needed repairs. equipment to determine operating conditions of Lays out and assigns work to unit and supervises machinery and equipment, making such adjust and performs more difficult or unusual repair ments and minor repairs as are necessary to main operations. Inspects and tests accomplished work tain production efficiency. Performs major repairs for quality and adequacy of repairs. Instructs per on malfunctioning or damaged equipment by dis sonnel in use and maintenance of shop equipment mantling, disassembling, and repairing or replacing such as mechanic's hand and bench tools, valve worn, damaged, or defective parts. Repairs such reseating machines, cylinder reboring machines, machines and shop equipment as engine lathes, valve refacers, drill presses, compression gauges, planers, milling machines, boring machines, shap- and battery chargers. Supervises the maintenance ers, drill presses, overhead and monorail cranes, of shop records and requisitioning of supplies, tools, welding equipment, power-transmission belting, and materials. pulleys and pulley shafts, and other related equip Must be able to read blueprints and lay-out work ment. from specifications or from rough notes and May operate one or more of the machine tools sketches. in making repairs and when fabricating replace ment parts not found in stock. SUGGESTED SUBSTITUTES Uses mechanic's hand tools and micrometerfe, 013 Diesel Mechanic gauges, engine lathe, power hack saw, drill press, 114 Machinist and grinders. 319 Construction Equipment Mechanic Must be able to interpret blueprints including 905 Mechanic, Engine, Wheel Vehicle (Gasoline) manufacturer's procedures manuals and diagrams. 909 Mechanic, Engine, Track Vehicle SUGGESTED SUBSTITUTE 912 Electrician, Automotive 114 Machinist INSTRUMENT REPAIRMAN, ELECTRICAL (338) MASTER MECHANIC (342) Supervises the maintenance and repair of shop Cleans, adjusts, repairs, and calibrates such elec facilities at an Army repair shop, machine shop, trical instruments as voltmeters, recording gauges, or other similar maintenance center. relays, motor starting boxes, ohmmeters, ammeters, Checks work requisitions, examines equipment and other electrical instruments. to be repaired, and lays out schedules of work. As Inspects instruments for faulty operation by dis signs jobs to individual specialists. Inspects prog assembling, cleaning, and examining parts for wear ress of repairs as well as completed repair jobs for and breakage. Repairs and replaces worn and de quality of work. Assists in solving the more com fective parts, lubricating and making precision plex problems of repair and installation. Instructs adjustments. and guides new personnel in machine and repair May machine and fabricate unobtainable replace shop practices. ment parts, using precision lathes and grinders. Supervises painting, carpentry, plumbing, and Uses. instrument maker's and machinist's hand allied maintenance work in and about a military tools. unit. Equipment used includes engine lathes, milling SUGGESTED SUBSTITUTES machines, boring machines, drill presses, welding 922 Instrument Repairman, Fire Control equipment, hammers, saws, brace and bit, soldering 957 Airplane Electrical Instrument Mechanic iron, and wrenches.

AGO 3008A 57 TM 12-427 5 Feb 46 C3

SUGGESTED SUBSTITUTES inventories of stock on hand and prepares requests 114 Machinist for such items as will adequately maintain a bal anced stock. May prepare price lists and cost rec 341 Shop Maintenance-Mechanic ords on expendable items. May receive, inspect, and TRUCK DRIVER, LIGHT (345) classify reconditioned and salvaged items returned for reissue. Ambulance Driver Chauffeur Must have a general knowledge of the type of Automotive Equipment Dispatcher-Driver parts designated, including description, nomencla Operator (AAF) Truckmaster ture, and interchangeability. Must have a good Drives auto or truck (214-ton capacity, or less) knowledge of supply procedure and regulations gov erning accountability and responsibility for Gov to transport personnel and equipment. Checks operation of lights, brakes, steering mech ernment property, including the maintenance of anism, and other operating parts. Services, cleans, stock and stock record accounts. and lubricates vehicle. Tightens and replaces nuts, FOREMAN, LABOR (356) bolts, screws, and studs. Repairs flat tires. Camou flages vehicle. Accomplishes standard vehicle re Superintendent, Labor port forms. Supervises a group or groups of service crew Uses pliers, jack, crank, wrenches, screw driver, men in the performance of various unskilled jobs, oiling can, and tire iron. such as ditch-digging, loading and unloading sup Should know general principles of the internal plies, erecting tents and uncrating equipment, in combustion engine, power transmission, and elec connection with such activities as construction, sup trical system in an automotive vehicle. Must know ply, grading, maintenance, cleaning, and transpor civilian and military traffic regulations, convoy rules tation. and road discipline. Must know how to read Obtains and issues hammers, saws, rakes, shovels, maps and overlays and be able to drive at night picks, wrecking bars, and hand trucks. Keeps rec and during blackout over all types of terrain. Must ords of work performed and prepares rosters for possess Army Motor Vehicle Operator's Permit. distribution of work. At supervisory level, is responsible for dispatch ing and routing of vehicles and column control of SUGGESTED SUBSTITUTE small motor convoys. 188 Duty Soldier II

PARTS CLERK (348) GLASSBLOWER (358) Automotive Parts Clerk Quartermaster Parts Makes glass articles for use in military chemical Armament Parts Clerk Clerk laboratories. Engineer Parts Clerk Railway Parts Clerk Manipulates molten glass at the end of blowpipe, Marine Parts Clerk using pincers and blowing through pipe to elongate and inflate the glass. Forces glass into metal molds Receives, stores, and issues replacement parts, ac of proper shape and design. cessories, tools, and other related items for auto motive vehicles, armament, engineer equipment, CONSTRUCTION MACHINE OPERATOR (359) marine equipment, railway equipment, or quarter master equipment in a supply depot, warehouse, or Concrete Mixer Operator Rock Crusher Operator repair shop. Road Grade Operator Receives incoming parts on credit or transfer mem Operates one or more construction machines such orandum and prepares stock record card or enters as road grader, bulldozer, angledozer, road roller, data on previously prepared record card. Checks scraper, rock crusher, and concrete mixer used in parts received against memorandum to insure accu construction and maintenance work on roads and racy of quantity and individual item. Stores parts in airports. bins or other compartments, arranging items to fa Moves and carries away dirt, trees and boulders cilitate issue and inventories, marking all parts with by manipulating "levers, pedals and throttle con identification numbers. Issues or distributes parts trols on machines used to level, grade and fill sur to personnel, departments, or sections in accordance faces. Operates and feeds rock crushing machines, with written memorandum noting each withdrawal and observes flow of rock through crusher. Sizes on the appropriate record card. Periodically takes crushed rock. Operates concrete mixing machine

58 AGO 3006A 5 Feb 46 TM 12-427 C3 and feeds proper proportions of sand, gravel, ce ORTHOPEDIC MECHANIC (366) ment and water into drum. Lubricates and cleans machines. Makes various types of braces, supports, artificial limbs, and other orthopedic appliances according OPTICIAN (365) to specifications. Grinds, polishes, cuts and edges eyeglasses ac Assembles artificial limbs by attaching metal cording to specifications, using a lens grinding joints to related parts. Hollows out artificial limbs machine which has an adjustable dioptric scale that with carving tools and makes necessary corrections can be set to produce lens with any prescribed to fit the wearer. Forms a plaster cast of the foot or curvature. obtains an imprint of the member on paper, and Takes facial measurements of soldier and mounts fashions the support from stainless steel, plastics, lenses on proper sized frame. Adjusts eyeglasses cork, steel, and leather, using rivet punch, electric to face at proper angles to obtain maximum effect drill, welding apparatus, chisels, saws, hammers, and of lenses. Requisitions lenses and frame from medi other hand tools. Molds leather parts over wooden cal supply unit. lasts and rivets them to braces with riveting ma May fit eyeglasses in gas masks. chine. May repair and alter orthopedic shoes.

AGO 3006A 58A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

PURCHASING AGENT (371) Takes timepiece apart for repairing or cleaning Buyer by prying off or unscrewing case, lifting mechanism Purchases new materials, equipment, machinery, from case, and disassembling springs, balances, and other supplies at the most favorable prices and other parts. Examines various parts to discover consistent with quality, quantity, and other factors defects and repairs and adjusts timepiece by insert in garrison or in the field. ing new main or hairsprings, resetting pivots and Draws up specifications according to military repairing or replacing affected parts. Cleans time standards, using correct nomenclature. Forwards piece by brushing parts or by immersing parts in invitations for bids, opens bids, interviews sales benzine, gasoline, or other cleaning solutions. Oils men, and awards contracts. Maintains records such timepieces by dropping small amounts of oil on as cost, delivery, inventories, and other items per moving parts. taining to purchases. Checks receipt of supplies as Equipment includes small pliers, tweezers, screw ordered. Supervises clerical workers in purchasing drivers, magnifying lenses, watchmaker's lathe, and and contracting office. watchmaker's brush. May make cash purchases and keep records and Civilian experience as watchmaker desirable. funds. SUGGESTED SUBSTITUTE Must be thoroughly familiar with Army regula tions governing procurement methods and pro 098 Instrument Repairman, Nonelectrical cedures. FIRE FIGHTER (383) SUGGESTED SUBSTITUTE Operates and maintains fire fighting equipment, 819 Commissary Steward rescues people and salvages articles during a fire. Connects hose couplings to pump and to hydrant, SALES CLERK (373) tightens hose connection with spanner wrench, lays Cashier hose, turns on hydrant with wrench, handles hose Sells various types of merchandise to customers nozzle, and sprays water on fire. Uses chemical in a military store, such as a fixed or mobile com spray for petroleum fires. Rescues people and sal missary unit. vages articles of value during fire. Keeps fire fight Arranges stock on sales floor and requisitions ing equipment clean and in good operating con replacements as needed. Arranges displays. Assists dition. customers in making selections. Assists in taking May drive fire truck. May supervise a crew of periodic inventories. fire fighters in fighting fires. May receive payment for articles, and wrap Uses ladder, ax, spanner wrench, arid gas mask. merchandise. Must be familiar with methods of extinguishing SUGGESTED SUBSTITUTE incendiary bombs. Must understand demolition methods in preventing the spread of fire. Must kno.w 835 Supply Clerk resuscitation and first-aid treatment. MOTORCYCLIST (378) INSTALLER, TOLL TELEPHONE AND Motorcycle Scout TELEGRAPH (384) Drives a motorcycle with or without side car Installs and performs initial testing of telephone for patrol work, traffic control, messenger service, repeaters, telegraph repeaters, telegraph testboards, combat, or reconnaissance. Services motorcycle, and other terminal equipment for toll telephone and performs first echelon maintenance, and makes telegraph printer circuits in a military communica minor repairs. tion system. Must be capable of operating motorcycle under Installs repeater connecting wires to various ter adverse conditions. Must know how to use maps minals of equipment according to diagram. Inspects and compass, and be able to orient himself in un and tests circuits and equipment to locate troubles, familiar territory. using testing devices such as voltmeters and ohm- SUGGESTED SUBSTITUTE meters. Diagnoses cause of trouble and makes re 345 Truck Driver, Light pairs or adjustments by soldering proper connec tions, and cleaning or replacing defective or worn WATCH REPAIRMAN (381) parts. Clockmaker Watchmaker Uses wide variety-of tools including cutting and Watch or Clock Inspector long nose pliers, screw drivers, socket wrenches, Cleans, adjusts, repairs, and oils watches and thickness gauges, soldering iron, burnishing tool, clocks. hack saws, augers, ratchets, and files. 59 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SUGGESTED SUBSTITUTES friction material, and conductor and insulation - 097 Installer-Repairman, Telephone and Telegraph testers. 187 Repeaterinan, Telephone Must be familiar with standard operating rules 232 Switchboard Installer-Repairman, Manual and regulations governing military railway electric transmission systems. Should be able to splice rub CARTOGRAPHER (387) ber covered cable. Should have experience on ca Performs various drafting tasks in connection bles of 440 voltage and up. with the drawing of maps (other than topographi SUGGESTED SUBSTITUTES cal) of roads, cities, towns, and other areas of military importance. 039 Cable Splicer, Tp and Tg Computes, draws and copies maps from notes or 165 Lineman, Power other maps, using such tools as T-square, triangles, 238 Lineman, Tp and Tg engineer's scale, French curve, railroad and contour 182 High Voltage Lineman pens, lettering guides,- protractor, map measure, CLERK-TYPIST (405) drawing table and color paints. Colors terrain fea tures and indicates location of artillery objectives, Addressing-Embossing • Clerk, Company detailed trenches, communication lines and roads. Machine Operator Clerk, Headquarters Must be familiar with conventional signs and Administrative and Technical Personnel Clerk symbols used in military map making. Must know Clerk Typist drafting fundamentals and the use of drafting tools. Chaplain's Assistant Vari-Typist Clerk, Battery- > SUGGESTED SUBSTITUTES Performs numerous clerical and typing duties in 070 Draftsman a military organization. 076 Draftsman, Topographic Uses typewriter to prepare mimeographs, stencils, TABULATING MACHINE OPERATOR (400) military correspondence, indorsements, reports, and standard forms peculiar to military administrative Sets up and operates electrically powered tabu and personnel matters. Uses a graphotype machine lating machines such as horizontal sorters, col to emboss information on metal tabs for use with lators, reproducers, interpreters and alphabetic tab addressograph equipment. Distributes, classifies, ulators, for furnishing statistical and other types and files correspondence. Keeps alphabetical and of information pertaining to military personnel and numerical file in accordance with military methods. records. Wires plug boards to correspond to re Opens mail, receives, and transmits telephone mes quired operations and inserts board into machine. sages and routes correspondence. Makes minor adjustments to mechanical and elec Must be able to type accurately at approximately trical parts. 35 words per minute or better. Must have good gen May supervise enlisted men in "machine opera eral knowledge of military filing classification sys tions, assigning work and checking operations. tem. Must understand the structure of military Must have knowledge of machine records pro correspondence. cedures, and be able to operate and adjust tabu Should be familiar with preparation of military lating machine equipment. forms such as morning reports. SUGGESTED SUBSTITUTE SOUND MIXER, MOTION PICTURE (407) 272 Key Punch Machine Operator Operates sound mixing board in connection with HIGH VOLTAGE CABLE SPLICER (401) the production of motion pictures for historical, Splices high voltage wires to join multiple con training, or publicity purposes. ductor cables in the installation and maintenance Studies script of dialogue, sound and music ef of military electric railway catenary systems. fects of each scene. Locates sound mixing board Dries out moisture from splice with paraffin or near source of sound. Tests equipment by turning desiccant, wraps, and covers with lead sleeves. Tests power switch and checking meter readings. Regu sheath by means of gas or air under pressure. Tests lates the tone, volume, and quality of sound picked conductors for continuity and insulation by means up by one or more microphones on set by means of buzzer system or other test instruments. Climbs of control switches on sound mixing board so that poles, using climbing tools and aids. the sound may be recorded on films or records to Tools and equipment used include climbing provide desired effects. Tests results by listening irons, safety belt, repair set consisting of wire, to noises and sound through headphones. Watches pliers, screw driver, knife, splices, insulating and volume level indicator and adjusts volume controls. 60 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

SUGGESTED SUBSTITUTES light focusing, and wheel alignment. Interprets 208 Sound Recorder, Motion Picture tests to determine type of repairs needed or ade 115 Electrician, Sound Transmission quacy of completed repairs. When feasible, conducts road tests, checking for MEDICAL TECHNICIAN (409) ease of starting, ease of handling, acceleration, un Performs various medical duties as a male nurse usual noises, proper functioning of panel instru to assist medical officers in the care and treatment ments and controls, and for correct brake action. of the sick, injured, or wounded. Prepares written report on each vehicle inspected, Gives emergency medical treatment to casualties reporting condition of vehicle and recommended and prepares them for evacuation. Cleans and action. bandages injuries and wounds, applies arm and Must be familiar with principles of internal com leg splints, administers hypodermic injections, and bustion engines. Must be familiar with ordnance sterilizes instruments and equipment. Assists med regulations regarding maintenance and repair of ical officers by performing such duties as keeping vehicles. records of patients, administering medicines, tak SUGGESTED SUBSTITUTES ing temperature, pulse, respiration rate, and physi 013 Diesel Mechanic cal measurement and treating minor injuries. 014 Automotive Mechanic (Second Echelon) SUGGESTED SUBSTITUTES 319 Construction Equipment Mechanic 657 Medical Aidman 905 Mechanic, Engine, Wheel Vehicle (Gasoline) 858 Medical Laboratory Technician 909 Mechanic, Engine, Track Vehicle 859 Pharmacy Technician 965 Mechanic, Automotive, Wheel Vehicle (Third 861 Surgical Technician Echelon) 966 Mechanic, Automotive, Track Vehicle (Third CHEMICAL LABORATORY ASSISTANT (411) Echelon) Assists in military chemical laboratory working • ELECTRICIAN, SOUND TRANSMISSION (415) with toxic and nontoxic gases and explosives or other chemical compounds and solutions. Transmission Man, Sound (Electrician) Performs various routine tests, such as filtration, Establishes and maintains electrical circuits for titration, or precipitation. Makes laboratory test the transmission, recording, and reproduction of reports on toxic and nontoxic gases and explosives. sound in production motion pictures for training, Furnishes test data. Check analyses with specifica entertainment, or publicity purposes. tions. Maintains supply of chemicals in laboratory. Installs and visually checks various patching Cleans laboratory equipment. cords of a sound circuit in recording and amplify Equipment used includes organic and inorganic ing equipment to insure a flow of current from the chemicals, laboratory glass apparatus such .as sound source to the recording machine. Checks flasks, beakers, burettes, condensers, and graduates, electrical frequency devices installed in the circuit. glass and rubber tubing of various sizes, field sam Tests the circuits and sound equipment by using pling apparatus, and analytical balances. various portable testing instruments such as volt meters and ammeters. MOTOR INSPECTOR (413) Uses electrician's hand tools. Should have some knowledge of the operation Vehicle Inspector of the component parts of sound recording equip Inspects and tests military motor vehicles visu ally, by road testing, or with the aid of special test ment, such as microphones, amplifiers, mixing panel, noise reduction amplifier, attenuators, and ing devices to determine operating efficiency, need recorders. of repairs, or adequacy and completeness of repairs. Visually examines all accessible parts for loose SUGGESTED SUBSTITUTES connections, badly frayed or worn insulation, 078 Electrician proper lubrication, and other potential hazards to 132 Electrician, Motion Picture operating efficiency. Using such tools and testing devices as screw PODIATRIST (422) driver, hammer, adjustable and socket wrenches, Chiropodist pliers, spark plug wrench, compression tester, neon Makes diagnoses and treats minor ailments of the timing light, wheel alignment gauge, and thickness feet of military personnel. gauge, conducts tests to obtain data on motor tim Removes corns, bunions, and treats similar de ing, cylinder compression, fuel consumption, head fects. Massages feet and administers local anaes- liL'mi'.ls o -44- 61 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL thetics or local antiseptics. Prescribes correct foot BANDSMAN, BASS DRUM (434) wear. Does not amputate nor administer anaesthet Bandsman. Glockenspiel ics or drugs other than local. Plays a bass drum or glockenspiel in a military Must have completed a course of study recom band. mended by the Council of Education of the National Reads music and plays instrument while march Association of Chiropodists. Should hold a degree ing in military formation. of Doctor of Surgical Chiropody (D.S.C.) from Should be familiar with military marches and an accredited school of chiropody or podiatry. selections used in Army bands. TABULATING MACHINE REPAIRMAN (425) BANDSMAN, SNARE DRUM (435) Makes electrical and mechanical repairs and ad Plays a snare drum in a military band. justments to electrically operated punch card ac Reads music and plays instrument while march counting machines such as tabulators, sorters, re ing in military formation. producers, key punch machines, interpreters, colla Should be familiar with military marches and tors, and similar machines. selections used in Army bands. Disassembles and repairs machines by replac BANDSMAN, EUPHONIUM OR BARITONE ing defective parts such as gears, generators, and (436) motors, and adjusting feed knives, camshafts, and ratchets. Plays a euphonium or baritone in a military Uses mechanic's hand tools. band. Must be able to read electrical and mechanical Reads music and plays instrument while march diagrams. Must be able to wire and operate tab ing in military formation. ulating machines. Should be familiar with military marches and selections used in Army bands. SUGGESTED SUBSTITUTE 400 Tabulating Machine Operator . BANDSMAN, FLUTE OR PICCOLO (437) Plays a flute or piccolo in a military band. MACHINIST'S HELPER (431) Reads music and plays instrument while march Assists a machinist in the construction and re ing in military formation. pair of metal parts, tools, and machinery in con Should be familiar with military marches and nection with the operation of an Army machine selections used in Army bands. shop. Assists in setting up, adjusting, and operating ma BANDSMAN, FRENCH HORN (438) chines such as lathes, planers, shapers, milling ma Plays a french horn in a military band. chines, and boring -mills. Oils and cleans machin Reads music and plays instrument while march ery. Performs roughing of material not requiring ing in military formation. close tolerance. Should be familiar with military marches and May work from written specifications. selections used in Army bands. Uses such bench tools as scrapers, chisels, files, gauges, and meters. BANDSMAN, SAXOPHONE (439) Should be able to read blueprints. Plays a saxophone in a military band. SUGGESTED SUBSTITUTE ' Reads music and plays instrument while march ing in military formation. 302 Machine Operator (Designated Machine) Should be familiar with military marches and BANDSMAN, CLARINET (432) selections used in Army bands. Plays a clarinet in a military band. BANDSMAN, TROMBONE (440) Reads music and plays instrument while march ing in military formation. Plays a trombone in a military band. Should be familiar with military marches and Reads music and plays instrument while march selections used in Army bands. ing in military formation. Should be familiar with military, marches and BANDSMAN, CORNET OR TRUMPET (433) selections used in Army bands. Plays a cornet or trumpet in a military band. Reads music and plays instrument while march BANDSMAN, TUBA (441) ing in military formation. Plays a tuba in a military band. Should be familiar with military marches and Reads music and plays instrument while march selections used in Army bands. ing in military formation. 62 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Should be familiar with military marches and lects proper lens from trial case, and directs the selections used in Army bands. patient to view chart through lenses. Prescribes eye exercises to alleviate and correct muscular in ENTERTAINMENT SPECIALIST (442) volvements of the eyes. Makes simple tests for color Actor Musician, Instrumental blindness. Entertainer Radio Program Super- Must have knowledge of anatomy and pathology Entertainment Director visor of the eye. Provides entertainment by means of personal Must be licensed optometrist and be graduate of performance or preparation of material for use in an approved school of optometry. theatrical and radio programs or motion picture productions. DIVER (454) May entertain audience by means of a skit, dance, Diver. First Class Salvage Diver reading, song, comedy act, feat of skill, or by play Diver, Second Class Salvage Master ing a musical instrument. Master Diver May plan, organize, and direct entertainment Performs underwater salvage, cpnstruction, and programs, using military personnel or professional demolition work in harbors, rivers, and ports. or amateur talent. May act as master of cere Inspects gear before diving, checking valves, monies. lines, connections, and suit. Patches own suit and PROCESS BACKGROUND SUPERVISOR (449) maintains own equipment. Puts on suit and helmet with aid of helper. Enters water using ladder or Special Effects Supervisor platform and regulates air in suit by means of Directs the projection of all photographic process valves. Maintains contact with surface by lines background images which are thrown on or through and phone. Surfaces by increasing air in suit. Pre screens to provide background for scenes being pares vessels for raising by welding stanchions to photographed. hull and deck, cutting metal from vessel, jetting Arranges set-up of projectors and angles of pro and excavating for lines, rigging, connecting pipes, jection to assure proper effect when shown on single and sealing compartments. Assists in constructing or double opaque screens from front or translucent wharves and piers by bracing, sawing, and rigging screens from the rear: Assists in placing of camera heavy timber and by welding, cutting, bolting, and to insure that foreground and background will be rigging structural steel. Demolishes vessels, in proper proportion and angle. Prepares projec wharves, and debris by drilling holes, using air tion plates and slides for desired background effects. tools, and placing and firing charges. Uses equipment such as slide projectors, opaque Must have knowledge of tides, currents, water and translucent screens, motion picture projectors, pressure, and diving safety rules. Must know fun slide transparency repair equipment, and spotlights. damentals of ship construction and compartmenta- Must know the characteristics of the motion pic tion of vessels. Must be able to give a good de ture or still camera being used to photograph back scription of underwater conditions and to search grounds. Must understand the operation and main for objects on the bottom. tenance of slide and motion picture projectors. Must be capable of developing lighting effects with DIVER'S HELPER (455) use of theatrical spotlights. Performs a variety of duties above water to as sist a diver. OPTOMETRIST (452) Assists diver in checking gear before diving. As Examines eyes for muscular and structural de sists diver in putting on diving suit. Puts on and fects and prescribes lenses and eye exercises to cor tightens diver's helmet. Checks air and communi rect defects. cation lines for obstructions and leaks. Controls Visually inspects eyes for external evidences of lines while diver is descending, is on bottom, and pathological conditions requiring corrective med when diver is surfacing. Communicates with ical or surgical treatment. Examines eye inter diver, using phone or hand line. Assists diver in nally using opthalmoscope and retinoscope to ob taking off diving suit. Assists diver in maintaining tain clear vision of the interior of the eye. Deter diving equipment. mines lens necessary to correct abnormal eye con Supplies diver with tools and equipment when ditions, such as near- and far-sightedness and astig on bottom, lowering tools, cutting torches, and ma matism. Places trial frame over patient's eye, se terial on lines. 63 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

CALKER (456) SAWMILL MACHINE OPERATOR (459) Closes seams in the planking in ship's hull or Foreman, Lumber Yard Foreman, Piling caisson. Foreman, Milling Foreman, Sawmill Sets calking in seams, using a calking iron and Operates a headsaw, cutting logs into lumber in mallet. Inserts oakum into seam and hammers it a portable or semiportable sawmill. in with mallet. Fills seam with hot pitch or uses Signals crew to roll log onto log carriage and putty to cover the calking. Removes old calking set log to position for sawing. Manipulates levers from seams, using reaming iron and mallet. to move the log and carriage against revolving saw Must know the construction of ship's hulls and to edge and cut boards and beams to standard compartments. thickness, length, and width. Signals crew to turn SUGGESTED SUBSTITUTE log over on carriage and reset for sawing. Segre gates and piles lumber according to dimension 202 Carpenter, Ship and species. With assistance of crew, changes SHOP CLERK (457) broken or dull saws and cleans and oils sawing ma chinery. Performs various clerical and technical duties in connection with the operations of a military repair Must know proper positioning of logs on car shop, automotive repair shop, or other maintenance riage to obtain maximum lumber. service center. May supervise sawmill crew, assign duties, check Records and established a shop control system on sawmill operation, and advise on correct methods all incoming repairs and work orders. Under super of sawing and piling lumber. Maintain records of vision of shop foreman, establishes priorities for sawmill operation. shop repairs and prepares itemized lists of required FOREST PRODUCTS TALLYMAN (462) replacement parts. Routes repair jobs through shop and maintains progress reports on daily status Log Sealer Lumber Grader Tallyman of repairs. Maintains all shop records and assists Determines lumber content of logs prior to mill shop foreman in requisitioning and maintaining ing, inspects and grades manufactured lumber adequate supply of shop materials and tools. products, and records lumber content of shipments. Must be familiar with shop procedures and be Measures length and diameter of logs, using scal able to estimate time requirements on various repair ing stick or tape to determine lumber content, and operations. Should have a working knowledge of records measurements in book or on end of log. mechanics, including nomenclature of shop tools Classifies lumber according to species and types, and equipment. inspecting for compliance with specifications and SUGGESTED SUBSTITUTES noting defects and unsatisfactory machine' work. 242 Toolroom Keeper Removes unsuitable pieces and returns to other 348 Parts Clerk, Automotive workers for salvaging. 848 Parts Clerk, Armament Checks lumber content of shipment or storage lots in board feet. linear feet, cubic feet, or cords DOG TRAINER (458) and computes total amount in each lot. Dog Handler Computes data and prepares reports for inven Dog Training Instructor tory, stock control, and procurement purposes. Kennelman Must know units of measure as applied to forest Performs one or a combination of duties in se products. Must know species, grades, and specifica lecting, training, issuing, caring, and feeding of tions of wood. Must be able to calculate data rap dogs used for sentry work, attack work, scouting, idly. message-carrying, and location of wounded on the battlefield. MILLWRIGHT, SAWMILL (464) Teaches enlisted men to train dogs to heel, sit, drop, stay, come, crawl, and jutnp on command, Installs, adjusts, repairs, and maintains machin both on and off leash; and to become accustomed ery and equipment of portable and semiportable to muzzles, gas masks, cars, and gunfire. Deter sawmills. mines the specific function for which each dog Constructs sawmill foundations of heavy timber should be trained. Eliminates dogs unsuitable for and lumber, using carpenter's tools. Moves and military service. Maintains single or multiple unit installs sawmill machinery, using jaoks, hoists, kennels and improvises kennels. Prepares food for slings, blocks, skids, and cribbing.* Maintains and dogs according to recommended feeding standards. repairs machinery for efficient operation by lubri- 64 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

eating bearings and gears and replacing belts, bear catheads, pipe connections if steam or air driven, ings, and shafts. Sharpens saws by filing and re and wire connections if electrically driven. Lubri places saw teeth. cates moving parts and bearings. Checks condition Must be experienced in the operation of port of fall, noting frayed strands. Receives directions able or semiportable sawmills. for operating winch from signalman, by means of hand signals. Manipulates lever, running drum SUGGESTED SUBSTITUTES forward or in reverse to raise, lower, or swing 341 Shop Maintenance Mechanic draft of cargo. 342 Master Mechanic May operate two winches at a time if operating FOREMAN, LOGGING (466) conditions permit. Must know safety rules in handling cargo. Timber Cruiser Supervises the work of logging crews in the SUGGESTED SUBSTITUTE cruising, locating, felling, bucking, and transporta 063 Crane Operator. tion of logs. Reads maps to determine extent of logging pos MECHANIC, MARINE ENGINE (477) sible in timber tract, and decides upon loading Master Mechanic, Marine points. Assigns crews to duties, inspects and ad Mechanic, Diesel vises on methods of topping, felling, and bucking Maintains and repairs marine engines and equip logs. ment such as propelling machinery, steam, Diesel, May estimate the volume and quality of timber gas, or electric auxiliaries, pumps, anchor handling on a tract of land. Determines timber tract from gear, steering apparatus, and boilers, on military map. Walks over timber track and measures trees, vessels. using scale and special hand measuring devices. Replaces worn or broken parts with new or im Indicates trees to be cut, records data, and esti provised parts. Adjusts and tests repaired equip mates total volume in area for procurement and ment for proper operation. inventory purposes. Locates operating and camp As master mechanic, inspects the different types of sites. Estimates man-days required for operation equipment and supervises the disassembly, replace of the tract. ment of worn or broken parts, and the reassembly Must understand the use of all types of logging of repaired equipment. Inspects completed repairs equipment. Must know safety rules used in log for quality of work. Instructs marine mechanics in ging operations. Should be familiar with mountain the fitting and assembly of machine parts, cutting and swamp logging under winter and summer and fitting gaskets, grinding and lapping valves weather conditions. and joints, cutting thread, and bending and fitting tubes and tubing. SUGGESTED SUBSTITUTE Must be familiar with engines and auxiliary 459 Sawmill Machine Operator equipment, including condensers, vacuum pumps, boiler-feed water pumps, circulating pumps, and CARGO CHECKER (470) water gauges. As member of checking crew, maintains record SUGGESTED SUBSTITUTES of incoming and outgoing shipments of supplies and equipment. 013 Diesel Mechanic Itemizes number, weight, volume, quantity, and 080 Marine Engineer other identification data on tally sheet. Stands 905 Mechanic, Engine, Wheel Vehicle (Gasoline) where cargo is tiered on the wharf and checks 909 Mechanic, Engine, Track Vehicle items when draft is being prepared for loading or when draft is unloaded and tiered. Stands in hold SHIP FITTER (478) and checks cargo for damage or pilferage. Prepares templates and lay-outs for special forms, such as plates and foundations of ship's SUGGESTED SUBSTITUTES hull. 055 Clerk, General Marks rivet holes to be punched or drilled. As 835 Supply Clerk sembles plates, bottom frames, side frames, and brackets for bilge and decks, watertight and non- WINCH OPERATOR (473) watertight floors, bulkheads, clips for the vertical Operates steam, electric, air, or gasoline-driven keel, longitudinal stringers, and brackets. Regu winches in loading and unloading ships. lates and secures all plate units in position for bolt Inspects winch prior to operation. Checks lever, ing and welding.

65 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

Equipment used includes T-square, framing distributing petroleum products. Supervises the square, tin shears, hacksaw, chalk, and soapstone. cleaning and maintenance of tanks, pumps, and ter minal equipment. SUGGESTED SUBSTITUTES Must know methods of storing petroleum prod 201 Sheet Metal Worker ucts. Must have knowledge of operation and main 256 Welder, Combination tenance of pumping equipment for handling such materials. Must have knowledge of hazards in han STILL OPERATOR (479) dling petroleum products, fire-fighting principles, Stillman and petroleum fire-fighting equipment and tech Stillman Helper niques. Topman Operates or directs the operation of one or a SAFETY INSPECTOR (486) battery of stills in which oil is broken down into Assistant Safety Engineer such products as gasoline, kerosene, lubricating oil, Inspects War Department installations and facili fuel oil, and petroleum coke. ties for the existence of hazards endangering life Patrols unit to check operating conditions. Ob and property. serves and records readings of temperature, pres Inspects facility areas, activities, machinery in sure, and flow gauges and meters. Regulates tem stallations and equipment, and enforces safety perature, pressure, and flow of oil by adjustment measures. Investigates accidents and makes recom of pipe valves or automatic controls. Tests products mendations to correct or eliminate causes. Checks for specific gravity and observes color to check operating procedures for compliance with safety processing. Draws samples for laboratory analysis. rules and regulations. Instructs enlisted personnel Performs preventive maintenance such as packing in recognition of existing hazards and necessary pre pumps and valves and making minor adjustments. cautions to prevent accidents. May mix tetraethyl lead with gasoline to produce For petroleum inspections, must be qualified to antiknock and high-power gasoline. assist in the enforcement of safety precautions Must be able to test equipment. Must be able to throughout a petroleum pipeline system and in calculate output and yield. Must be able to make struction of enlisted personnel in safe handling of simple laboratory tests for gravity and color. Must gasoline, precautions to be taken while repairing be familiar with fire fighting and safety procedures. leaks, and prevention of static charges. Should be familiar with industrial processes and ENTOMOLOGY TECHNICIAN (484) hazards, production problems and military training Collects, identifies, and classifies mosquitoes and requirements and methods. other insects for the purpose of accumulating in Training and experience in industrial accident formation for use in their control and medical re prevention, safety engineering, public safety, fire search. prevention or industrial hygiene very desirable. Should have completed courses as a member of a malaria survey given by the Medical Department, PETROLEUM PUMPING EQUIPMENT or should have pursued a formal course of in REPAIRMAN (487) struction in entomological techniques at a techni cal school or Army laboratory. Makes major repairs on petroleum pumping equipment and pipelines. PETROLEUM STORAGE TECHNICIAN (485) Repairs leaks byi tightening couplings and in stalling leak clamps. Repairs breaks in pipe by in Terminal Operator Assistant stalling new pipe and coupling. Repairs engines, Terminal Supervisor, Petroleum Products pumps, and controllers by tearing down, cleaning, Supervises the storage, handling, and distribution adjusting, and installing new orTebuilt parts and of petroleum products, and operation and mainte reassembling equipment. nance of storage terminals or tank farms at ports, Uses mechanic's hand tools, drift pins, gas indi beach heads, airfields, or bulk stations. Checks cator, and special nonsparking tools. amount and kind of petroleum products in tanks Must know first aid and be able to give artificial against stock records, directing work of gaugers. respiration. Obtains samples for testing prior to pumping. Pre pares information for pump station operators and SUGGESTED SUBSTITUTES other terminal operators as to time, amount, route, 013 Diesel Mechanic and destination of products to be pumped. Directs 114 Machinist the connecting of available tanks for receiving or 905 Mechanic, Engine, Wheel Vehicle (Gasoline) 66 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

ADMINISTRATIVE NCO (502) defective parts, such as bearings, piston rings, and spark plugs. Tunes motor by listening to it and Administrative Inspector adjusting carburetor, timing, ignition system, and Administrative Specialist (AAF) valve clearance. Uses wrenches, pliers, screw driv Chief Clerk ers, and feeler gauge. Personnel NCO In diagnosing and repairing malfunctions in the Sergeant Major generator, observes operation of brushes to see if Supervises and directs work of one or more ad they spark. Examines armature and field windings ministrative sections of a headquarters organiza to see that they are not burned or shorted'. Checks tion in the preparation of correspondence, records, for grounds or shorts by testing at various points, forms, reports, and orders. using test prods and voltmeter. Recommends re May supervise the preparation of reports, corre turn of generator to repair unit if windings are spondence, records, and forms on personnel mat burned, shorted, or grounded. Replaces external ters, including payrolls, special orders, courts-mar wiring between generator and control panel. Re tial proceedings, morning reports, sick reports, places faulty bearings. Removes armature and rosters, leaves, furloughs, and discharges. May sends it to repair unit if the commutator is in need keep a staff journal and policy file. Must be familiar of turning. Cleans, tightens, and solders loose con with operation of unit to which assigned. nections. Lubricates bearings and reassembles unit. SUGGESTED SUBSTITUTES SUGGESTED SUBSTITUTES 055 Clerk. General 014 Automotive Mechanic (Second Echelon) 213 Stenographer 078 Electrician 405 Clerk-Typist 912 Electrician, Automotive AMMUNITION NCO (505) BOMBARDIER (509) Ammunition Supply Technician (AAF) Releases bombs on enemy targets from a bom Supervises requisition, procurement, and distri bardment airplane. bution of ammunition. Adjusts bombsight for such specific conditions Prepares required forms incident to the requisi as ground speed, elevation, and drift. Identifies tion and distribution of ammunition. Keeps inven target and sights it through optical system of bomb- tory cf ammunition. Supervises loading and un sight when pilot begins the run, releasing bombs loading operations of an ammunition train, consist when target is seen in correct relation to .appro ing of trucks, horse-drawn vehicles, or pack ani priate markings on bombsight. Corrects bombsight mals, observing all safety precautions in handling adjustments when course is altered. Reports effect ammunition. Establishes a local ammunition dump, of bomb hits to airplane commander. Inspects and and supervises construction operations to protect makes flight adjustments to bombsight and bomb ammunition from the elements. Maintains sufficient release mechanisms. Fires aerial machine guns. level of stock to meet needs of organizations served. Reads maps to identify and locate ground targets. May salvage ammunition left at battery positions Must be physically qualified for high altitude as result of forward displacement. flight. Must know all markings, such as color, caliber, lot, type of charge, and filler of gas, smoke, and INFORMATION CENTER OPERATOR (510) high explosive shells. Must understand the hazards Aircraft Warning Filterer Aircraft Warning Plotter and safety regulations regarding ammunition, fazes, Aircraft Warning NCO Aircraft Warning Teller and primers. Places small markers on plotting or filter boards to indicate the presence, type, direction, and alti SUGGESTED SUBSTITUTE tude of friendly and enemy aircraft approaching or 901 Munitions Worker present in a specified area. Receives information by telephone from radar PORTABLE POWER1 GENERATOR REPAIRMAN station and observation posts, coded in the form of (506) short numerical sequences. Selects and places Maintains and repairs a portable power generat proper marker on plotting or filter board at point ing unit consisting of a gasoline engine and a small of intersection of grid coordinates which represent electric generator. the position of reported or observed aircraft. Places In repairing gasoline engine, removes carbon additional markers on board to indicate altitude, from valves and cylinder heads. Cleans and ad direction, and other data pertaining to aircraft justs carbureter. Replaces fan belts and any other flights. Reports information displayed on plotting 67 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL or filter board to personnel of operations room. justments, and replacements of parts such as fuzes, Records plotted information in log. Computes filters, batteries, pilot lights, and spark plugs. speed of flights by measuring distances between May direct and instruct crew in the operation-of markers on filter board which indicate points at designated sets and rotate task assignments to pre which aircraft were located at specific times. vent fatigue and maintain efficiency. May super Must be able to place markers accurately on plot- vise the assembly and disassembly of ground radar ting or filter board at a speed of eight to ten plots equipment. a minute for any required period. Must be familiar with the principles of detection and identification by radar equipment. Must be SUGGESTED SUBSTITUTES thoroughly familiar with procedures for operating 055 Clerk General the equipment under the handicap of interference 309 Telephone Operator from similar equipment or from enemy counter- ARMORER (511) measure activity, and must understand the pro cedure for reporting the presence and location of Maintains, services, and makes minor repairs on such interference. all small-arms weapons of using organization. Examines such weapons as rifles, carbines, pis SUGGESTED SUBSTITUTE tols, rocket launchers, light and heavy .30- and 514 Radar Crewman (Other Designated Sets) .50-caliber machine guns by manually operating mechanisms. Cleans weapons, using oil, still bristle GROUND AIRCRAFT OBSERVER (518) or wire brush, wiping cloth, and emery cloth. Dis assembles weapons, sands, and removes all burrs, re Antiaircraft Fire Control Observer, Flank Station places worn or unserviceable parts, and reassem Ground Observer, Aircraft Warning (AAF) bles weapons. Sends all weapons requiring major Sets up and operates an observation post in for repairs to appropriate Ordnance shops. ward area of a combat zone in order to provide in Performs miscellaneous organization tasks in formation concerning approach- of friendly or en cluding carpentry, painting, and similar organiza emy aircraft. tional repair work. Determines the location of site and establishes Uses such tools and equipment as pliers, screw observation post. Spots and identifies friendly and drivers, chisels, punches, files, drift pins, hammers, enemy aircraft by sight and sound and reports their and bench vise. presence by voice, radio, telephone, or other means Must be familiar with construction and operation of communication to aircraft warning service, anti of small arms weapons. Must be able to estimate aircraft gun, or searchlight headquarters. Estimates condition of guns and gun parts and determine and reports range, azimuth, altitude, number, and whether replacements are necessary. Must be type of observed aircraft. Transmits reports of such familiar with Ordnance regulations governing re weather elements as type and height of clouds, wind pair of small-arms weapons. direction and velocity, ceiling, and visibility. May set up, operate, and perform minor mainte SUGGESTED SUBSTITUTE nance on radio equipment used in transmitting ob 802 Artillery Mechanic, Minor Maintenance servation. Must have normal hearing and should have RADAR CREWMAN (DESIGNATED SET) (514) twenty/twenty vision. Chief Radar Operator Radar Operator (Designated Set) SUGGESTED SUBSTITUTE Portable Power Generator, Operator 761 Scout As a member of a team assembles and disassem bles mobile or fixed ground radar equipment (des BASIC (521) ignated set) and operates it by manipulating tun This classification will be used to designate en ing or operating controls while observing readings listed men in the following categories: on oscilloscopes. Plots and reads both polar and (1) Personnel who are undergoing basic train rectangular coordinates and converts polar coordi ing. nates into rectangular coordinates. Assists in keep (2) Personnel who have completed basic train ing equipment in good operating condition and in ing and are undergoing unit training, but are not preparing equipment for transportation. yet qualified for an MOS. Uses small hand tools in maintenance and repair (3) Personnel who have proved unqualified in work which consists of inspecting, dusting, and an MOS previously held and are reassigned for oiling equipment; and making simple repairs, ad training in another specialty. 68 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Enlisted men classified under this number will as computer, tracker, and altitude converter. Super be constantly observed and tested to determine their vises unloading of equipment and its emplacement potentialities, and this knowledge will be utilized to and camouflage. Examines all equipment to make develop these individuals into military occupa certain it is in working condition and that cables tional specialists. and connections are securely fastened. Supervises servicing and minor maintenance of all equipment. DUTY SOLDIER I (522) Synchronizes various units of range section with Gauger, Petroleum Products each other and with guns. Establishes flank spot Guard-Patrolman ters to relay information on approach of enemy Patrolman, Pipe-Line aircraft and to adjust fire. Sets dials making ballis Airplane Target Parachute Packer tic corrections on director, including adjustments This is a broad classification covering enlisted for muzzle velocity, fuze dead time, parallax, and men who perform various nontactical and nontech wind direction. Receives meteorology message at nical duties requiring only a moderate degree of periodic intervals and makes additional corrections responsibility and skill and involving no specialized based on data contained therein. training or experience. SUGGESTED SUBSTITUTE Representative duties included in this classifica tion are guarding or patrolling a military installa 724 Range Section Operator, Coast Artillery tion; patrolling pipe lines to prevent sabotage and AIRPLANE HYDRAULIC MECHANIC (528) to repair small leaks, measuring and recording amounts of petroleum products in storage tanks; Inspects, services, and repairs hydraulic systems making minor repairs to, and folding and packing used to actuate such aircraft equipment as landing target plane parachutes. gear mechanisms, wheel brakes, bomb bay doors, This classification and specification serial num oxygen systems, and fire extinguishers. ber will be assigned enlisted men who perform Visually inspects component units of hydraulic such duties regularly. systems including reservoirs, pumps, valves, pres sure regulators, pistons, and actuating cylinders BALLOON CREWMAN (526) to determine that they are functioning properly, Balloon Crew Chief that correct amount of fluid is available in reservoir, Performs various manual tasks as member of a that hydraulic pressures in various parts of the maneuvering crew to assist in preparing a balloon system meet prescribed standards, and that there for tactical operation. are no leaks in the system. Disassembles units of Clears and levels area for the balloon bed. Lays hydraulic systems, analyzes cause of malfunction, out ground cloths and deflated balloon on the bed and corrects condition by making adjustments and preparatory to balloon ascension. Handles moor repairs, such as adjusting valves, mending lines ing lines to move balloon as it is inflated and when leaks are discovered, and making parts re raised into position and performs related duties placements. Cleans all parts of hydraulic systems when hauling down or bedding down balloon. Per after repairs have been completed and makes oper forms minor maintenance and repair, such as oiling ating test to check functioning. mooring cables and inspecting and patching balloon Tools and equipment include screw drivers, fabric and ground cloths. wrenches, pliers, cleaning agents, manometers, and Knowledge of balloon rigging equipment and other pressure-testing instruments and hydraulic ability to tie various kinds of knots desirable. test stands, and tube forming devices. At supervisory level, is responsible for control, Must be familiar with principles of hydraulics coordination and tactical employment of crew and with construction and operation of various air members and for maintenance of balloon and equip plane hydraulic systems. ment at balloon site. SUGGESTED SUBSTITUTE ANTIAIRCRAFT RANGE SECTION NCO (527) 747 Airplane and Engine Mechanic Supervises range section personnel in operation WRECKER CREWMAN (529) and maintenance of fire control instruments and Wrecker Operator equipment used in automatic computation of data Operates as member of crew of wrecker in extri for completion of firing missions against enemy cating and salvaging abandoned, damaged, or mired aircraft or ground targets. vehicles. Selects location of equipment, including height As crew member, drives vehicle on which wreck finder, power unit, radar, and director units, such ing equipment is mounted. Operates crane hoist 69 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL or winch to right disabled vehicle in position for molished. Inserts detonating fuze or electrical towing. Operates acetylene torch to dismantle such wires. Places explosives in drilled holes or secures sections of vehicles which would prevent movement explosives to object. Lights fuze with match or of equipment. Makes minor repairs and adjust connects electrical wires, according to the method ments to permit return of vehicle under own power. of explosion to be used- Inspects and repairs un- Must be familiar with operation and mainte exploded charges. Must be familiar with the safety nance of wrecking equipment such as hand and precautions to be taken in the handling and appli power operated crane hoists, light and heavy jacks, cation of explosives. acetylene burning equipment, block and tackle, May perform such miscellaneous tasks as blast crow bars, and automobile mechanic's tools. Must ing stumps or rocks for road construction and blast be able to recognize and solve various terrain and ing underwater debris for the construction of docks rigging problems. Should have a good working and clearance of harbors. May operate flame knowledge of automotive mechanics. thrower as tactical situation demands. Equipment used includes hand powered earth and SUGGESTED SUBSTITUTES wood augers, shovel, pick, cap crimpers, and small 014 Automotive Mechanic (Second Echelon) hand powered electrical generator. 189 Rigger 660 Tank Mechanic, Minor Maintenance SUGGESTED SUBSTITUTE 729 Pioneer SALVAGE REPAIR NCO (530) Superintendent, Canvas Repair BALLOON GAS HANDLER (535) Superintendent, Shoe Repair Balloon Gas Chief Supervises repair for reissue of salvaged clothing, Supervises, operates, or assists in the operation of shoes, textiles, leather, rubber, canvas, and webbing a gas purification unit in the manufacture of helium in a fixed or mobile salvage repair unit. or hydrogen used in the inflation of balloons. Supervises receipt of salvage and its return to Charges generator with chemical compounds and user or to depot for reissue after it has been re operates various valves and pumps to inflate balloon paired. Inspects and determines repairability of with gas generated. Tests inflated balloon for purity salvaged materials. Allocates work and supplies to of gas, using metronometer to determine gas con sections and shifts. Checks supplies and requisitions tent. Inflates balloon by connecting inflation tubes them as needed. Instructs repairmen in established to balloon and gas cylinders and regulating flow of procedures and standards for repair of equipment gas. Determines gas pressure in balloon by use of and-inspects finished work. Supervises use of sew manometer. Lubricates generating equipment. ing machines and shoe repair machines such as Makes adjustments and repairs with such common finisher, stitcher, sole cutter and skiver, and patcher. hand tools as wrenches, hammers, pliers, and screw In a mobile unit, aids in determining the place drivers. Cleans and replaces pipes, valves, gauges, ment of the trailers, and supervises their movement pistons, and gaskets. and preparation for operation. Must have working, knowledge of construction, maintenance, and -operation of generating equip SUGGESTED SUBSTITUTES ment and combustion engines. 204 Shoe Repairman 234 Tailor VOICE INTERCEPTOR (DESIGNATED 609 Leather and Canvas Worker LANGUAGE) (538) DEMOLITION SPECIALIST (533) Identifies and intercepts voice radio transmis sions in a designated foreign language by operating Demolition Technician (AAF) a radio receiver and other equipment. Copies or Engineer, Explosive records intercepted transmission and translates into Flame Thrower English. Destroys or makes unserviceable, by means of ex Operates equipment such as receivers, sound re plosives, such objects of military importance as corders, and transcribers. Tunes in radio receiver bridges, roads, buildings, airdromes, ammunition on an assigned frequency or by searching over a dumps, fuel dumps, and railways to cover retreat band, of frequencies. Records intercepted traffic of retiring forces and to delay the advance of the by hand, typewriter, or by transcribing data from enemy. recordings. Determines size, type, and placement of explo Performs first echelon maintenance by inspect sives to be used according to the object to be de- ing, dusting and Diling equipment; making simple

70 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES repairs or adjustments such as changing tubes and tems. Selects from available stock most appropri adjusting frequencies. Uses simple hand tools. ate equipment to be installed. Establishes control Must have excellent understanding of designated procedures including efficient operational lay-outs foreign language in its spoken form and be able in nets using radio, telephone, or teletype. Ad to translate it accurately into English. Must have vises and instructs personnel on general technical thorough knowledge of military terminology used and operational phases of radio intelligence work. in foreign language and in English. Must be a qualified Intercept Operator. Must be familiar with the principles of radio, propagation SUGGESTED SUBSTITUTES of radio waves, and functioning of antenna systems 267 Translator employed with direction finding and intercept 320 Interpreter equipment. Must be able to use ionospheric reports COMMUNICATIONS CHIEF (542) effectively in predicting communication frequencies, distances, and hours of reliability. Must be versed Communication Sergeant in map reading. Must be familiar with method .of Communication Technician (AAF) plotting and evaluating bearings. Radio Sergeant Signal NCO SUGGESTED SUBSTITUTES Wire Sergeant 738 Intercept Operator, G Supervises a communication section in the in 739 Intercept Operator, J stallation, operation, and minor maintenance of two or more of the following communication facilities; COXSWAIN, MINE YAWL (546) wire, radio, or air-ground contact. Supervises operation of a 26- to 30-foot motor- Supervises the laying, testing, maintenance, and driven boat known as a mine yawl in connection recovery of wire. Selects location and directs in with planting submarine mines for the protection of stallation of central and substations. Directs tele coastal waters and harbor areas. phone, telephone switchboard, telegraph, teletype Assists larger boat, such as mine planter and "L" writer, or radio operators in receipt and transmis boat, in marking out limits of mine field and plot sion of calls or messages. Superintends air-to- ting newly planted mines. Sounds water depths of ground, ground-to-air, radio, and fixed airways newly planted mines and determines distance of communication systems. Utilizes other miscellane submarine mine below water surface.. Transmits this ous signal devices such as panels, signal lamps, and information to mine planter. Runs cable from ship pyrotechnics. Supervises adjustment, maintenance, which connects submarine mines to shore control and minor repair of equipment used, including ra stations. dio sets, field telephones, switchboards, and wire Must be able to make minor repairs to boat en lines. Instructs and trains personnel of unit in tech gine. Must be a skilled seaman. niques of field communication. Prepares rosters and SUGGESTED SUBSTITUTES distributes work among various teams. Should be familiar with various means of signal 065 Seaman communication such as message center operation, 823 Coxswain, Harbor Craft radio network operations, wire construction, tele 838 Seaman, Landing Craft phone switchboard and teletypewriter operation, MASTER, L BOAT (547) and miscellaneous communication facilities. Pilot, L Boat RADIO INTELLIGENCE CONTROL CHIEF (543) Supervises operation of "L" boat engaged in mine laying activities for defense of coastal waters Control Chief and harbor areas. Steers boat to mine field site Control Room Operator and supervises crew in connecting cables of a sub Radio Intelligence Control Technician (AAF) marine mine group to a distribution box which is Supervises the installation and operation of a connected to a shore point by means of a multiple local radio intelligence system composed of direc conductor cable. Supervises lowering and anchor tion finding, intercept, and auxiliary equipment ing of distribution box into position. Keeps boat employed for the purpose of locating and inter log and maintains navigation charts. Supervises cepting enemy transmissions. the general maintenance of the boat and is respon Selects and tests location sites as to operational sible for- the efficient operation of engines and aux reliability in consideration of factors such as topog iliary equipment. raphy, soil conductivity, proximity of metallic con Must have knowledge of laws of navigation and ductors, and employment of artificial ground sys navigation aids. 71 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SUGGESTED SUBSTITUTES AIRPLANE SHEET METAL WORKER (555) 065 Seaman Airplane Radiator Repairman 722 Submarine Mine Planter Repairs damaged sheet metal structures and light FABRIC AND DOPE MECHANIC (548) metal fittings of airplanes and reconstructs badly damaged sheet metal parts such as wings, elevators, Repairs or replaces torn or damaged fabric cov fairings, cowling, and hatches. ering of fuselage, wings, elevators, and other sur Inspects airplane to locate holes, bulges, dents, faces of various types of fabric-covered aircraft. cracks, breaks, and loose, broken, or. missing rivets. Examines .entire airplane to determine extent of Reinforces damaged or weakened skin on structural damage and type of repairs. Applies patches to members. Rivets patches over small breaks and small tears and rips. Makes paper templates- and smooths bulges and dents, using hammer and block. uses them in cutting and fitting canvas over airplane Removes and replaces complete sections of sheet fuselage and control surfaces. Uses sewing machine metal skin when damage is extensive in area. Re and needle and thread in preparing fabric cover places clamps and other small metal fittings .on ing. Applies several coats of dope and color coat airplane structures. Repairs or replaces wire con to canvas covering by brush or spray gun. trol cables. Repairs and polishes plexiglass and AIRPLANE WOODWORKER (550) other plastic transparencies. Occasionally performs such major metal repairs as reconstructing badly Inspects, maintains, and repairs wooden aircraft damaged wings, elevators, hatches, and metal cowl parts or assemblies. ing, and replacing false ribs in wings. Working from sketches and drawings, makes wood replacement parts for aircraft and other tem May assist in repairing leaks in airplane radia plates for advanced phases of airplane repair. Re- tors. . pairs breaks and splits, using splicing and gluing Uses rivet gun, mallets, punches, and hammer techniques. and block. Must have knowledge of the characteristics of Must be generally familiar with aircraft con various woods, glues, shaping and bounding proc struction. Must know properties of various plastics esses, and be skilled in the use of woodworking used in glazing airplanes, the operation of the machinery. heating oven, and the proper methods of forming, gluing, installing, and polishing. CONTROL TOWER OPERATOR (552) Directs aircraft and vehicles operating on a GLIDER MECHANIC (559) landing area, and aircraft approaching or taking off at a landing area. Makes woodwork, fabric, sheet metal, and cable Issues such information and instructions to pilots repair and replacement on gliders. of aircraft as may be necessary for the purpose of Constructs, alters, repairs, and refmishes wooden preventing collision between aircraft operating on parts of glider craft using wobdworking machinery the ground at the landing area, aircraft and vehicles and hand tools in an aircraft woodworking, shop. operating on the landing area, aircraft landing and Replaces or repairs damaged metal parts by weld taking off at landing area, and aircraft operating ing or by cold riveting small patches over breaks. under instrument flight rules at locations where ap Cuts and fits canvas envelopes over wings or fuse proach control procedures are in effect. Issues such lage, sewing by hand or machine, and finishes by information and instructions as may be necessary applying paint or dope to form a weatherproof sur to prevent unnecessary delays to aircraft using the face. Makes necessary inspections before and after landing area and which will permit the proper flight. May disassemble and assemble demountable use of the landing area by aircraft. Notifies and gliders. directs crash tender and ambulance to the scene of Should be able to work from sketches artd draw crashes occurring in the landing area. ings and make repairs and replacements without the Must be able to transmit and receive by ear the use of shop machinery. Should understand specific letters and numerals of the International Morse gravity, moisture content, and seasoning of aircraft Code at a rate of 10 five-letter random code groups woods and plywoods. Should know properties and per minute without error for a minimum period of kinds of glue. 2 consecutive minutes out of 3. Must be familiar with combined radiotelephone procedure and au- SUGGESTED SUBSTITUTES thentification as well as the rules and regulations 550 Airplane Woodworker governing airport control tower operation. 555 Airplane Sheet Metal Worker 72 12 Apr 45 TM 12-427 C 1 AIRCRAFT APPROACH CONTROLLER, GCA radio transmitting and receiving frequencies re (561) quired to maintain radiotelephone communication. Informs pilot of headings and rates of descent nec Observes and interprets presentations and read essary to bring aircraft into visual contact and ings of scope screens and associated instruments of proper alignment with runway, thereby making a GCA equipment (such as AN/MPN-1) indicating visual landing possible. the altitude, direction of flight, and range of ap Transmits information to pilots during approach proaching aircraft. Monitors air-ground radio through overcast with respect to local weather, traf telephone channels in order to establish communi cations with aircraft approaching an Army air field fic, runway, and other conditions affecting the for landing under conditions of minimum ceiling flight of aircraft in the control area. Maintains all and visibilty. prescribed logs and records for GCA activities. Based upon interpretations of scope screens and Performs first echelon maintenance of radio, instruments, issues instructions on own initiative to radar, and intercommunication facilities supplied pilots for the holding, stacking and spacing of air with GCA equipment. craft to prevent collision and to effect an orderly Must possess a working knowledge of combined flow of traffic to a prescribed position and altitude radiotelephone procedures. Must be capable of for final upproach. performing spot alignment of radar scopes. Directs aircraft through an established traffic Completion of AAF prescribed course for Con pattern and gives pilot instructions concerning troller GCA or equivalent experience required.

AGO 174A 72^ SPECIFICATIONS FOR MILITARY OCCUPATIOIVAL SPECIALTIES

PIGEONEER (560) PACK DRIVER (565) Pigeon Trainer Leads pack animals used in transporting ammu Breeds, trains, and cares for a loft of homing nition, materiel, supplies, and other cargo neces pigeons which are to be used as message carriers sary for the functioning of field units operating in within or between Army units. mountainous or jungle teirain. Leads single animal during marches wnile Based on physical and nervous characteristics, mounted or on foot; rides or walks beside herded selects birds suitable for message carrying. Chooses appropriate pairs and mates them during the breed animals keeping them in line. Saddles and unsad ing period. Treats birds for minor ailments and dles pack animals with a Phillip's pack saddle designed for hanger-positioned or rope-hitched injuries, administering medicines, . remedies, or loads. Adjusts loads during marches by tightening diets in accordance with diagnosis. Closely super ropes or straps. vises the preparation of their food, and cleans lofts. Keeps or supervises keeping of pertinent data con May assist in preparing- and loading cargo and in lashing loads. cerning pigeons. Must have more than average strength and be HORSE ARTILLERY DRIVER (563) capable of enduring long marches on foot over rough terrain. . Must understand care and manage Drives a pair of horses of an artillery team con ment of horses or mules. Should be able to tie sisting of one or more pairs in draft which pulls such knots as diamond hitch, squaw hitch, and other solid tire artillery materiel consisting of guns, cais knots or slings. sons, reels, and limbers. Rides near-horse and controls off-horse by the DUTY NCO (566) bridle rein held in the right hand. Coordinates Assists a unit commander by supervising various movement of both horses in stopping, starting, tasks and field duties such as the policing of build changing directions, or in backing up. Harnesses ings and areas, and similar fatigue details. and unharnesses artillery pair. Checks and adjusts Aids in the instruction of enlieted men in basic harness during march to prevent occurrence of training and in the technique and tactical employ sores or skin abrasions. Waters, feeds, and cleans ment of basic weapons. Performs various super animals. Removes animals to cover during em visory duties in combat. placement and remains with them. May perform the duties of a platoon guide or file Must understand arni signals which indicate vari closer during close order drill. ous movements in maneuvering .horse drawn artil Must be able to supervise and instruct others. lery vehicles. SUGGESTED SUBSTITUTES SUGGESTED SUBSTITUTES Any enlisted man who has demonstrated that he 093, Horsebreaker possesses the necessary qualifications. 094 Horseshoer 235 Teamster ELECTRICIAN, HARBOR DEFENSE (571) 710 Stable Sergeant Performs minor maintenance and. repair on elec 712 Packer, Animal trical facilities of harbor defense installations, in 1531 Gun Crewman, Pack Artillery cluding port telephone switchboards, telephones, cables, field wire systems, time interval machines, SPECIAL ASSIGNMENT (564) searchlights, and power panels. Performs organizational maintenance on search This specification serial number will be used lights;, gasoline, and Diesel engines such as lubricat only after clearing each specific case with The Ad ing, cleaning, adjusting and replacing defective jutant General. units, and testing of electrical systems. Performs, for a period of 30 days or more, duty Uses such tools as screw driver, voltmeter, am of a highly specialized nature which is performed meter, pliers, wrenches, soldering equipment, auto by such a. small number of individuals that it does mobile mechanic's tools and wire splicing equip not warrant classification as a Military Occupa ment. tional Specialty. Title for the specific duty will be entered under Classification in Military Special SUGGESTED SUBSTITUTES ties, with any additional information under "Re 078 Electrician marks" on W.D.A.G.O. Form No. 20, Soldier's 572 Seaco-ast Gun Data Computer Qualification Card. 579 Casemate Electrician

73 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

633 Fire Control Electrician, Antiaircraft (Auto REMOTE CONTROL TURRET REPAIRMAN matic Weapons) (575) 634 Fire Control Electrician, Antiaircraft (Gun) Performs third and fourth echelon maintenance 635 Searchlight Electrician of remote control turret equipment. Analyzes mal functioning of remote control turret equipment SEACOAST GUN DATA COMPUTER (572) (main assemblies). Isolates malfunction to the in dividual parts within assembly. Adjusts, repairs, Supervises an Ml Seacoast Gun Data Computer or replaces faulty parts. Tests assembly in com team of a range section, consisting of an azimuth plete system. Uses analyzing tools, meters, instru tracker, elevation tracker, and dial point inatchers, ments, gauges, etc., for location of fault. in operation of an electrical powered, self-synchron Replaces or repairs damaged or worn parts in ized motor device designed to furnish fire control assembly. Reviews, reassembles with parts provided data for seacoast guns of major caliber. for third and fourth echelon maintenance. Rebuilds Instructs members of team in techniques of track rotating machinery (amplidynes, motors, dyna- ing (following) target and in matching pointers to motors); turrets (compressors, boosters, fire inter curves on dials or charts. Detects malfunctioning rupters, gear drive units, ammunition feed assem by understanding principles of operation of elec blies, contour follower mechanisms, dome locking trical input and output data transmission systems devices, gun chargers); serve-amplifiers (tubes, and external reaction of dials on instrument. transformers, resistors, capacitors); sighting sta Should have experience in various phases of tions (pedestal, ring, and periscbpic sights, grips Coast Artillery range section work, particularly the and gyro assemblies) ; computers (parallax units, duties of plotting. ballistic units, range units, relay units, altitude and airspeed units, and handset voltage regulators). SUGGESTED SUBSTITUTE Cleans, oils, greases, adjusts, inspects, and tests for 724 Range Section Operator, Coast Artillery mechanical and electrical operation of assembly. Tests for operation of assembly in complete system. WELDER, AIRCRAFT (573) FLASH RANGING OBSERVER (576) Welds aircraft assemblies and parts, using gas Flash Ranging Chief and electric welding equipment, in connection with Flash Switchboard Operator repair of aircraft structures. Observes flash of enemy guns or shell burst of Repairs aircraft parts and structures such as friendly artillery from one of several observation braces, exhaust stacks, and tubing 'by welding. Fab posts to provide means of locating the position of ricates parts and structures required in mainte gun or burst. nance of aircraft. Works within close tolerances of Transmits the time of occurrence of flash or burst temperatures applied to the metal and to fitting of by pressing a button on an electrical device which parts and structures. Sets up and operates welding registers on a dial of flash ranging switchboard at apparatus and uses such machinery and tools, as central station. Sets up azimyth instrument over drill presses, pedestal grinders, power hack saws, surveyed position. Zeros instrument in established hand tools, dies, and taps. Heat treats all aircraft direction. Reads horizontal or vertical angle of flash raetals to obtain desired hardness and temper char or burst from ground. Relays information to cen acteristics. Prepares and uses working drawing tral station by telephone, where it is plotted and and templates. location of gun or burst is determined by intersec tion with plotted points relayed by other observers. SUGGESTED SUBSTITUTE Connects telephone and capacitator unit to wire''in 256 Welder. Combination stallations. Tests circuit and equipment by test operation. BOMBSIGHT AND AUTOMATIC PILOT At supervisory level, is responsible for the con REPAIRMAN (574) trol and coordination of a crew of flash ranging Performs third and fourth echelon maintenance specialists. on bombsights and related automatic pilot equip SUGGESTED SUBSTITUTE ment. 586 Sound Ranging Observer Balances gyros and subassemblies. Adjusts optics SURVEY AND INSTRUMENT NCO, FIELD for parallax, selects and replaces bearings. ARTILLERY (577) Must be able to diagnose and correct all trouble Chief of Detail Instrument NCO short of the manufacturing of parts. Fire Control NCO Intelligence Observer

74 12 Apr 45 TM 12-427 C 1

SEACOAST GUN DATA COMPUTER (Designated using tools and test equipment furnished with Type) (572) computer. Supervises or assists in the supervision of range Must have a thorough understanding of principles section team assigned to a designated gun data com of operation of electrical input and output data puter of a designated type used as a fire control transmission systems and external reaction of dials instrument. on instrument. Instructs members of team in techniques of track Should have experience in various phases of coast ing and matching required for proper operation of artillery range section operations, particularly ihe computer. Detects malfunctioning of designated duties of plotting. computer, and makes such minor repairs, adjust ments or replacements necessary to place the equip SUGGESTED SUBSTITUTE ment and accessories in proper operating condition, 724 Range Section Operator, Coast Artillery

AGO 174 A 74A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Supervises, coordinates, and participates in sur mines used for protection of coastal waters and vey operations to locate observation posts, gun posi harbor areas. tions, and other locations by transit, traverse, or Adjusts relays and rotary switches by making other, survey methods in connection with control of proper measurements and operational tests of parts. individual or massed fire of firing batteries. Manually adjusts parts' to comply with specifica Supervises crew in setting up, adjusting, and op tions. Tests firing devices by controlled electrical erating such survey and fire control instruments operation to determine if operation is in order. as transit, aiming, circle, range finder, battery com Hooks up power panel, distribution panel, group mander's telescope, prismatic compass, alidade, panel, and selector box. Operates this equipment plane table, protractor, scales, and steel tape to and determines by means of signal lights and read determine vertical and horizontal angles, distances, ings of meters if it is functioning properly. and elevations. Instructs crew in use of slide rule Equipment used includes filler gauges. M—2 test and in making routine trigonometric calculations to sets, Weston analyzers, bridge meggers, firing de compute azimuth and military grid coordinates of vice test frames, pliers, and screw 'drivers. points by right and oblique triangle methods. In SUGGESTED SUBSTITUTE structs crew in operation of graphical firing table, which is a type of slide,rule designed to furnish 078 Electrician initial and corrected firing data to the guns. Checks REMOTE CONTROL TURRET MECHANIC- all data and computations made by survey crew GUNNER (580) for completeness and accuracy. Supervises crew in Loads, aims, and fires turret mounted machine additional duties of liaison, scouting, intelligence, guns in combat. Identifies target aircraft, adjusts and reconnaissance. Supervises battery communica sight, tracks target and fires guns v\'hen correct tion personnel in installation operation, and minor sight is obtained. Inspects, cleans, and services maintenance of wire, radio, and visual signaling. flexible machine guns and power turret and locr.tes Should be familiar with wire, radio, and visual and corrects electrical and mechanical faults in signal communications systems. turret. SUGGESTED SUBSTITUTE Adjusts reflecting type sights for proper collima- 228 Survey and Instrument Man tion, cleans, repairs, and changes desiccant in peri- scopic sights. • OBSERVATION STATION OPERATOR, COAST Installs electrical wiring and equipment related ARTILLERY (578) to central station fire control system. Adjusts pro Instrument Observer Spotter tective circuits and analyzes malfunctioning on fire Reader Tracker control and transfer circuits. Changes main assem Recorder blies, resistors, condensers, tubes, leads, relays, and Acts as a member of a team in a seacoast artillery contractors in central station fire control system. observation station, performing such duties as in Performs other first and second echelon mainte strument observing, tracking, spotting, reading, or nance on central station fire control equipment. recording. Tracks moving targets through an azimuth instru SIGNAL SUPPLY TECHNICIAN (531) ment, stopping momentarily when the timing bell Communications Supply Technician (AAF) rings to allow the reader to read the azimuth. Re Supervises requisitioning, receiving, transport ports data to plotting room. Locates with an azi ing, storing, issuing, and inventorying of signal muth instrument the splash of the shells as they equipment. hit the water and informs the spotting board oper Directs consolidation of requisitions for signal ator by telephone of the deviation from the target. supplies from lower units and forwarding of requi When fire control is accomplished by gun data sitions to base depot or other higher supply eche computers or directors, performs vertical or hori lon. Supervises unloading and storage of supplies zontal tracking by means of telescopes on machine in accordance with correct warehousing procedures, in the same manner as tracking with azimuth instru and in such a manner as to permit inventory, issu ment or turns hand wheels matching pointers on ance, or shipment with the least confusion. Pre dials to insure that smooth output of data is trans pares or supervises upkeep of records. When ship mitted to gun. ment of supplies arrives, -examines equipment for defects, and separates according to requisition. Pe CASEMATE ELECTRICIAN (-579) riodically takes physical inventory of signal equip Operates and maintains electrical equipment of ment of lower units, checking supplies on hand a mine casemate system for control of submarine against shipping tickets. MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

Must be familiar with all types of signal equip ism at a central station used to provide means of ment, know expendibles in signal supply, under locating the position of guns or bursts by calcula stand warehousing, and be familiar with Army tions based upon the time interval in which the regulations governing accountability, responsibility, sound was recorded from the various positions. and supply procedure involving action to be taken Must be able to judge caliber of different type in the event of loss or damage to Government artillery pieces and be able_tD..jdistinguish between property. them by sound of projectile in flight, report of dis SUGGESTED SUBSTITUTES charge, sound of bursts, or by examination of shell fragments. 252 Foreman, Warehouse At supervisory level,.is responsible for control 821 Quartermaster Supply Technician and coordination of a crew of sound ranging 835 Supply Clerk specialists. / / AERIAL MINE TECHNICIAN (582) SUGGESTED SUBSTITUTES Maintains, repairs, handles, stores, assembles, 576 Flash Ranging Observer modifies aerial mines, and loads in'aircraft. 641 Field Lineman Uses standard hand tools and special rnfne as sembly tools. DUTY SOLDIER III (590) May supervise munitions workers in handling of Airplane Handler Kitchen Helper aerial mines. Base Maintenance Man Laborer Must have thorough knowledge of safety regula Bath Attendant Orderly tions in handling and storage of explosives, and Cook's Helper Oven Fireman loading of mines in aircraft. Dining-room Orderly Stable Orderly ENGINEER SUPPLY TECHNICIAN (583) Furnace Fireman Water Tender Supervises or assists in requisition, receipt, stor Horseholder age, maintenance, and issue of engineer supplies This is a broad classification covering enlisted and materiel at a depot, military installation, or men who, under supervision, perform various non- Engineer unit. specialized and routine duties requiring no special Supervises loading, unloading, and storage of physical qualification and little or no responsibility, engineer supplies and equipment. Supervises and skill, or initiative. assists in taking of inventories, and inspection of Performs organizational duty details such as engineer property. Supervises packing, crating, and housekeeping and maintenance of utilities, build shipping of engineer equipment. Examines materiel ings, and airdromes. Serves as helper to technicians for defects. Determines validity of requests for re in performance of their duties, and performs other placement parts and controls issue of same. Main general unskilled laboring tasks. tains appropriate records relative to engineer items. This classification and specification serial num Must have knowledge of Army regujations gov ber will be assigned enlisted men who perform erning accountability, responsibility, and supply such duties regularly. procedures. Must be familiar with current orders, memoranda, and bulletins relative to engineer sup FOREMAN, FUMIGATION AND BATH (591) plies. Must be familiar with specifications for pack Superintendent, Fumigation and Bath ing, crating, and shipping engineer equipment. Supervises movement and operation of a fumi-. Should be able to process requisitions for survey gation and bath unit. ing, drafting, reproduction, and engineer equip Assists in determining location of unit and lay ment and spare parts, and construction materials. out of equipment to insure adequate water supply, drainage, aerial and ground security, and avail SOUND RANGING OBSERVER (586) ability to troops. Supervises erection 'of dressing, Sound Ranging Chief undressing, supply, storage, and medical tents. Listens for report of enemy guns or for explod .Checks on operation of fumigation, bath and spray ing shells of friendly artillery from one of several equipment, and stations. Supervises adherence to observation posts. established procedures to insure continuous flow of Connects telephone and capacitator unit to wire men and clothing through unit. installations. Performs operational test on circuit May supervise issue and fitting of clothing. and equipment. Transmits sound at the moment of its occurrence by pressing a button on an electrical SUGGESTED SUBSTITUTE device, which starts an electrical recording mechan 706 Fumigation and Bathman 76 12 Apr 45 TM 12-427 C 1 ROCKET CREWMAN (596) When firing without electrical director control, oper Gunner . ates azimuth or elevation forward area sights, track Rocketeer ing target by sighting through direct fire sights and manipulating cranks rotating gun. As elevation As crew member of a 4.5-inch or larger rocket tracker, fires piece by pressing on foot pedaL Em- projector, assists in moving, emplacing, firing and places and operates multiple machine gun mount or withdrawing the piece in combat operations. acts as ammunition man for machine gunner cover Performs one or more of the following operations ing with fire the dead space immediately over gun during the firing mission: sets horizontal angle position. Acts as lookout, reporting approach of from established position by means of panoramic enemy planes. May drive prime mover. sight and manipulates traversing hand wheel to As gunner, supervises crew going into and out lay projector on target. Makes additional changes of action, and in the emplacement of the piece. in deflection as directed. Sets target range on range When firing without director control, indicates tar gun and target angle of site on angle-of-site scale. gets, gives or repeats commands to fire, and ad Attaches fuze to rocket using fuze wrench; sets justs fire by verbal order. When firing with direc combination fuze for quick or delay, or time fuze tor control, roughly aligns gun and director, and using fuze setter. Fires projector. Assists in such throws gun into automatic control by operating gun maintenance operations as cleaning, oiling, and slewing clutch and elevation switch. Checks bore rust-proofing vital parts of projectors. Carries, sighting, and pulls rope tied around foot of firer inspects, cleans, and passes rockets. when command to cease firing is given. Tracks At supervisory level, is responsible for control, target, using direct fire sights, operates deflection coordination, and tactical employment of rocket handle, estimating lateral and vertical leads and projectors and crew members. applying them to sighting system, or loads auto SUGGESTED SUBSTITUTES matic loader. 844 Gun Crewman, 864 Gun Crewman, As a member of the range section assists in un Light Artillery Medium Artil- loading equipment, including director, power unit, 845 Gun Crewman, lery tripod and cable system. Sets up and levels equip Heavy Artil- 1531 Gun Crewman, ment at designated locations and connects power lery Pack Artillery cables. Operates as an azimuth or elevation tracker on director, following target with telescope by ANTIAIRCRAFT ARTILLERY AUTOMATIC manipulating hand wheels in such a way as to WEAPO'NS CREWMAN (60i) obtain a smooth tracking rate. Estimates range to target and sets into the director. Observes Ammunition Handler Gunner, Antiaircraft tracer with reference to target, adjusting director Antiaircraft Artillery Gunner, Machine, Anti to improve accuracy of fire. Observes target NCO. Automatic aircraft through open sight on director, throwing in azimuth Weapons Operator, Fire Director, slewing clutch to turn director so that telescopes Cannoneer AA will be directed toward the target. Repeats opera Observer, Instrument tion with every change of target. May operate As a member of a gun section, performs one or portable power generator furnishing power for more of the following duties incident to firing and range section. maintenance of a mobile 40-mm gun, or similar At supervisory level, commands gun and range weapon and fire control equipment, used for protec sections and is responsible for emplacement, con tion of combat elements or strategic areas from duct of fire, and fire adjustment while engaging enemy aircraft or mechanized vehicles. targets. Unlimbers gun from prime mover, mounts piece Should be acquainted with mechanical function on jacks, extends outriggers to provide balance, and ing and tactical use of gun fire control equipment, obtains equilibrium by adjusting jack levelling bub and the reduction of stoppages. Should be familiar bles, and digs emplacement. Assists in maintenance with duties of all members of the gun crew and and service of the piece. Passes ammunition from range section. prime mover or cache to loader, or loads clips and places them around gun position. Inserts clips into SUGGESTED SUBSTITUTES autoloader, adjusts firing lever, and if firing with 2601 AAA Gun Crewman director control fires by pressing on foot pedal. 597 AAA Machine Gun Crewman, SP

AGO 174A 637401°—15- 76A 30 Jim 45 TM 12-427 C 2 PERSONAL EQUIPMENT TECHNICIAN (594) ANTIAIRCRAFT ARTILLERY MACHINE GUN CREWMAN, SP (597) Assists Personal Equipment Officer in the inspec tion, adjustment, and issuance of personal, protec Gunner, AA Gunner, Machine, AA tive and emergency equipment. As a member of a crew, performs various duties Inspects such personal equipment as electrically in operation and maintenance of a machine gun heated flying clothing, single and multiplace life battery mounted on a half-track and utilized for rafts and accessory kits, and personal oxygen equip protection of advanced combat elements against ment, to determine need for repair or adequacy of low-flying hostile aircraft. repairs. Makes minor adjustments on various tvpes Services machine guns, feeding belts into con of personal equipment including the fitting and test tainers, watching for stoppages, and immediately ing of masks. Issues personal equipment prior to eleminating their cause. As gunner, operates power- each mission to insure that air crewmen are properly controlled turret. By manipulation of control col equipped and that equipment is in good operational umn, swings turret in direction of enemy aircraft. condition. Assists in the instructing and training of Aims by means of a reflector sight and fires guns air crewmen in the care and use of personal, protec by pressing buttons in side of control column. tive and emergency equipment, including emergency Maintains guns and other equipment in good work- procedures and survival techniques. ins order, greasing, oiling, and cleaning working Must have completed Personal Equipment Tech- parts. nician Course at an Army school or have equivalent May drive half-track, operate radio, and assist experience. in lowering turret to ground for use as stationary mount. ROCKET CREWMAN (596) ANTIAIRCRAFT ARTILLERY NCO, SP WEAPONS (598) Gunner Commands crews operating self-propelled ma Rocketeer chine guns and automatic weapons employed in the As crew member of a 4.5-inch or larger rocket protection of advanced combat elements against projector, assists in moving, emplacing, firing and low-flying hostile aircraft. withdrawing the piece in combat operations. Supervisors technical employment of guns, desig Performs one or more of the following operations nating field or direction of fire, type of target, and during the firing mission: sets horizontal angle approximate location of firing position. Insures from established position by means of panoramic that all avenues of approach for enemy aircraft sight and manipulates traversing hand wheel to are covered. Supervises tactical and mechanical lay projector on target. Makes additional changes training of various gun crews. in deflection as directed. Sets target range on range SUGGESTED SUBSTITUTES gun and target angle of site on angle-of-site scale. Attaches fuze to rocket using fuze wrench: sets 597 AAA Machine Gun Crewman, SP combination fuze for quick or delay, or time fuze 601 AAA Automatic Weapons Crewman using fuze setter. Fires projector. Assists in such OPERATOR, RADIOTELEPHONE, FIRE maintenance operations as cleaning, oiling, and CONTROL (599) rust-proofing vital parts of projectors. Carries, inspects, cleans, and passes rockets. Transmits and receives fire control data to and At supervisory level, is responsible for control, from forward observation posts, fire direction cen coordination, and tactical employment of rocket ters and firing batteries by means of radiotelephone projectors and crew members. equipment. Selects location and sets up portable radiotele SUGGESTED SUBSTITUTES phone transmitter and receiver. Using simple codes and cipher devices transmits voice messages as di 844 Gun Crewman, 864 Gun Crewman, rected. Receives messages in code words or ordi Light Artillery Medium Artil nary conversation and relays message. 845 Gun Crewman, lery Performs first echelon maintenance by keeping Heavy Artil- 1531 Gun Crewman, radiotelephone equipment clean, inspecting cord lery Pack Artillery plugs, antenna masts, receiver, transmitter and cal ibration charts. Makes minor repairs or adjust-

AGO 283A 77 TM 12-427 30 Jun 45 C 2 ments, such as changing tubes and adjusting fre handle, estimating lateral and vertical leads and quencies, using simple hand tools. applying them to sighting system, or loads auto Must possess working knowledge of radiotele matic loader. phone and authentication procedures. Must be ca As a member of the range section assists in un pable of encoding and decoding voice messages, loading equipment, including director, power unit, using simple codes and cipher devices. Must be tripod and cable system. Sets up and levels equip familiar with fire control terminology and fire con ment at designated locations and connects power trol methods as used in field artillery and similar cables. Operates as an azimuth or elevation tracker units. on director, following target with telescope by manipulating hand wheels in such a way as to ANTIAIRCRAFT ARTILLERY AUTOMATIC obtain a smooth tracking rate. Estimates range WEAPONS CREWMAN (601) to target and sets into the director. Observes tracer with reference to target, adjusting director Ammunition Handler Gunner, Machine, Anti- to improve accuracy of fire. Observes target Antiaircraft Artillery aircraft through open sight on director, throwing in azimuth NCO, A u t o.m a t i c Operator, Fire Director, slewing clutch to turn director so that telescopes Weapons AA will be directed toward the target. Repeats opera Cannoneer Observer, Instrument tion with every change of target. May operate Gunner, Antiaircraft portable power generator furnishing power for As a member of a gun section, performs one or range section. more of the following duties incident to firing and At supervisory level, commands gun and range maintenance of a mobile 40-mm gun, or similar sections and is responsible for emplacement, con weapon and fire control equipment, used for protec duct of fire, and. fire adjustment while engaging tion of combat elements or strategic areas from targets. enemy aircraft or mechanized vehicles. Should be acquainted with mechanical function Unlimbers gun from prime mover, mounts piece ing and tactical use of gun, fire-control equipment, on jacks, extends outriggers to provide balance, and and the reduction of stoppages. Should be familiar obtains equilibrium by adjusting jack leveling bub with duties of all members of the gun crew and bles, and digs emplacement. Assists in maintenance range section. and service of the piece. Passes ammunition from SUGGESTED SUBSTITUTES prime mover or cache to loader, or loads clips and places them around gun position. Inserts clips into 2601 AAA Gun Crewman autoloader, adjusts firing lever, and if firing with 597 AAA Machine Gun Crewman, SP director control fires by pressing on foot pedal. LIGHT MACHINE GUNNER (604) When firing without electrical director control, oper Ammunition Bearer ates azimuth or elevation forward area sights, track Machine Gun NCO ing target by sighting through direct fire sights and Loads, aims, cleans, maintains, and fires a light manipulating cranks rotating gun. As elevation machine gun to provide automatic direct fire against tracker, fires piece by pressing on foot pedal. Em- enemy personnel and light armored vehicles. places and operates multiple machine gun mount or Estimates ranges and sets sights. Field-strips acts as ammunition man for machine gunner cover weapon with combination tool to replace worn or ing with fire the dead space immediately over gun damaged parts or to reduce stoppages. position. Acts as lookout, reporting approach of At supervisory level, is responsible for control enemy planes. May drive prime mover. and coordination of machine gun squads and tac As gunner, supervises crew going into and out tical employment of weapons. of action, and in the emplacement of the piece. Must'be capable of making rapid and accurate When firing without director control, indicates tar range estimation and determining the speed of gets, gives or repeats commands to fire, and ad moving targets. Must be able to use hand weapons, justs fire by verbal order. When firing with direc such as rifle, automatic rifle, carbine, pistol, bay tor control, roughly aligns gun and director, and onet, trench knife, and hand grenades. • Must be pro throws gun into automatic control by operating gun ficient in the techniques of hand-to-hand fighting. slewing clutch and elevation switch. Checks bore sighting, and pulls rope tied around foot of firer SUGGESTED SUBSTITUTES when command to cease firing is given. Tracks 605 Heavy Machine Gunner target, using direct fire sights, operates deflection 746 Automatic Rifleman

78 AGO 2S3A 30 Jun 45 TM 12-427 C 2

HEAVY MACHINE GUNNER (605) Ernplaces mortar and sights in on aiming stake. Adjusts mortar for elevation and deflection. Uses Ammunition Bearer firing tables to determine necessary charge and Antiaircraft Machine Gunner adjusts charge of mortar shell by removing neces Machine Gun NCO sary number of increments to give correct auxiliary Loads, aims, cleans, maintains, and fires heavy propelling force. Fires weapon by dropping shell machine gun to provide automatic direct or indirect into'mortar to strike firing pin. fire in support of other tactical units breaking At supervisory level, is responsible for control through enemy defense, harassing enemy troops and and coordination of mortar crews and tactical em positions, and in defense against enemy aircraft, ployment of mortars. light armored vehicles, and enemy counterattack. Must be able to estimate range and deflection rap Estimates ranges and sets sights. Field-strips the idly and accurately. weapon with a combination tool to replace worn or damaged parts or to reduce stoppages. Fires the SUGGESTED SUBSTITUTE weapon from a fixed or mobile position at fixed 1607 Heavy Mortar Crewman or moving targets, using either direct or indirect fire. GUN CREWMAN, COAST ARTILLERY (608) At supervisory level is responsible for control and coordination of machine gun squads and tac Ammunition Chief Gun Commander tical employment of weapons. Cannoneer Gun Pointer Must be capable of making rapid and accurate Chief of Bree'ch Gunner range estimation, and determining the speed of Fuze Setter Range Setter moving targets. Must be able to fire on moving tar As a member of a Coast Artillery fixed, semifixed gets such as airplanes without use of sights, by or railway artillery piece to bring fire to bear against observation of tracer. Must be able to use hand enemy seacraft in coastal frontier defense waters. weapons, such as rifle, automatic rifle, carbine, pis Performs one or more of the following operations: tol, bayonet, trench knife, and hand grenades. Must Keeps gun pointed at target, setting range on range be proficient in the techniques of hand-to-hand -scale and the deflection from an established position fighting. on the panoramic sight, or uses a system of match SUGGESTED SUBSTITUTES ing pointers on dials attached to gun to effect same result. Opens and closes breech manually or by em 604 Light Machine Gunner ploying power mechanism. Inspects and cleans 746 Automatic Rifleman projectiles to prepare them for loading. Places LIGHT MORTAR CREWMAN (607) projectiles on ammunition table, truck, or plat form, and by hand, crane, or hoist moves to rammer Ammunition Bearer Mortar Gunner tray. Seats projectiles by hand or power ramming. Mortar Assistant Mortar NCO Removes powder charge from container and in Sets up, aims, and fires a 60-mm mortar to place serts in breech recess by hand or by ramming. explosive or toxic gas shells upon enemy positions. Inserts primer in firing mechanism block. Fires

AGO 233A 78A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

piece by pulling handle of firing magneto or by At supervisory level, is responsible for control pulling hand lanyard. After misfire removes unfired of operations and tactical employment of gun crews round using rammer and rammer staff. Inspects and guns. bore and swabs with water. Cleans breech and Must be familiar with driver maintenance. firing mechanism block. Assists in such maintenance SUGGESTED SUBSTITUTES operations as cleaning, oiling, and rustproofing vital parts of gun. 607 Light Mortar Crewman At supervisory level, is responsible for control 1607 Heavy Mortar Crewman of operations and tactical employment of gun crew 1736 Light Tank Crewman and gun. 2736 Medium Tank Crewman /• AERIAL GUNNER (oil) SUGGESTED SUBSTITUTES 844 Gun Crewman, Light Artillery Operates a hand-held or turret mounted machine 845 Gun Crewman, Heavy Artillery gun in airplane to protect airplane from enemy 1531 Gun Crewman, Pack Artillery attack. Loads, charges guns, aims, fires, and reloads. LEATHER AND CANVAS WORKER (609) Strips and reassembles standard machine guns used Gas Mask Repairman on tactical bombers. Makes preflight and postflight . Upholsterer inspections and necessary adjustments. Inspects for Lays out, cuts, sews, cements, and fits leather and worn or broken parts, and performs routine main cai/. as materials in the manufacture or repair of tenance on such guns. tents, tarpaulins, slings, seat covers, tops, and cov Must be able to manipulate smoothly and accu ers for searchlights and guns. rately the type of turret on which he has been spe Sews parts together by hand or on sewing ma cifically trained, use sights correctly, charge guns, chine. Operates and maintains leather and canvas fire, and reload. Perform first echelon maintenance working machinery. on his turret, including prefiight and postflight Uses leather and canvas working tools. inspections. Should be familiar with care and preservation Must be qualified to fly at high altitudes and of leather and canvas materials. Should be familiar use oxygen and interphone equipment. with use of springs, padding, and covering mate rials for repair of motor vehicle or furniture up AIRPLANE ARMORER-GUNNER (612) holstery. Inspects, repairs, and maintains all aircraft arma (For shoe repair, see Shoe Repairman, 204; for ment, including bomb release mechanism, airplane saddle and harness repair, see Saddle and Harness cannons, machine 'guns, auxiliary equipment, and Maker, 192.) may repair other weapons. SUGGESTED SUBSTITUTES Makes daily inspections and running repairs to equipment, such as bomb racks, bomb release mech 200 Sewing Machine Operator anisms, aerial gun sights, flare racks, flare rack 204 Shoe Repairman controls, and chemical carrying release mechanisms. 234 Tailor Installs armament equipment on airplanes. Fuzes ANTITANK GUN CREWMAN (610) and places bombs in bomb racks; disassembles guns Ammunition Bearer Gun Commander and inspects them for worn1, broken, or defective Antitank Gunner Radio Tender parts. Makes necessary replacements or repairs and Antitank NCO Tank Destroyer Crewman reassembles weapons after thoroughly cleaning and Cannoneer oiling their working parts. Mans a machine gun Operates as member of crew of self-propelled position if combat occurs during flight. or towed antitank gun used in destruction of enemy tanks and other armored, .vehicles. CHIEF BALLOON RIGGER (615) As crew member drives vehicle on which gun Supervises a group of balloon crewmen and rig is mounted or by which gun is towed. Lays, aims, gers in preparing, inspecting, and maintaining a and fires gun in accordance with fire orders from barrage balloon and balloon bed. gun commander. Loads gun with ammunition. Main Lays ground mooring cable and handling lines. tains radio telephone communication with other Unrolls and lays out balloon envelope and checks elements. external rigging for proper location. Inflates bal Equipment includes antitank guns, self-propelled loon with air and enters to examine envelope for or towed, such as the 3-inch, 75-mm, 37-mm, and deterioration and leaks, and to check gas valves 57-mm and ligfat and heavy machine guns. and air scoop. Inspecta balloon daily before and 79 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL after ascension. Supervises repair of envelope, in with needle and thread or by use of sewing machine. ternal and external rigging, and accessories. Super Inspects and repacks parachutes that have been vises hand and machine sewing repair work on opened in service for repairs. Examines leather balloon envelopes. jackets and helmets, electrically heated clothing, Equipment used includes straight and curved and other flight clothing and makes necessary needles, rubber rollers, wire brushes, soldering repairs. iron, blow torch, files, cutting pliers, cable cutter, cable splicer, sewing machine, mallets, and vise. FINANCE TECHNICAL CLERK (622) SUGGESTED SUBSTITUTE In a finance disbursing or administrative office, processes vouchers for pay, allowances, and travel 619 Balloon Rigger expenses of military and civilian personnel, and ALTITUDE CHAMBER TECHNICIAN (617) for supplies and nonpersonal services. Assists an aviation physiologist in the indoctrina Maintains schedules of collections and disburse tion and training of student flying personnel and ments, cash book, cash blotter, accounts current, air crews in high altitude flying by means o£ a and related papers. Decides, within limits pre fixed or mobile altitude chamber in which person scribed by the disbursing officer, questions of nel are subjected to controlled changes in air pres legality, propriety, form, procedure, and method of sure similar to those experienced in flying at va payment. Recommends new procedures or the revi rious altitudes. sion of existing procedures! May supervise and Instructs and supervises trainees in fitting oxy instruct enlisted men and civilians in finance ac gen masks and in adjusting flow of oxygen to the tivities. masks as air pressure is decreased on "ascent" and Must have thorough knowledge of appropriate increased on "descent." Closely observes trainees Army regulations, laws, and procedures pertaining during simulated flights for symptoms of anoxemia. to the use and disbursement of funds. Operates controls which change air pressure inside (To be assigned only' to Finance Department chamber. Performs minor maintenance on oxygen duties.) equipment including masks, oxygen flow regulators, SUGGESTED SUBSTITUTES and air and oxygen lines. Replaces defective parts, using screw driver and other hand tools. Keeps 623 Finance Typist-Clerk records in connection with the chamber operation 624 Finance Clerk showing hours and characteristics of operation, FINANCE TYPIST-CLERK (623) individual training records, and supplies used. In a finance disbursing or administrative office, BALLOON RIGGER (619) computes, processes, and types vouchers for pay, Balloon Envelope Repairman allowances, travel expenses, supplies, and nonper Inspects, repairs, and maintains barrage balloons sonal services. and balloon^bed. Maintains schedules of collections and disburse Attaches external and internal rigging to balloon. ments, cash book, cash blotter, accounts current, Rigs balloon internally to obtain proper rigidity and related papers. Types correspondence, reports, when inflated. Adjusts pilot car and cable. Per and.other pertinent material. forms cordage, cable, and fabric work. Repairs Must be able to type at the rate of approximately envelope by applying patches and sewing breaks 35 words per minute. Should be familiar with ap by machine or hand. propriate laws, Army regulations, procedures and Equipment used includes straight and curved established policies governing disbursement of needles, rubber rollers, wire brushes, soldering iron, money. blow torch, files, cutting pliers, cable cutter, cable (To be assigned only to Finance Department splicer, sewing machine, mallet, and vise. duties.) PARACHUTE RIGGER AND REPAIRMAN (620) SUGGESTED SUBSTITUTES Parachute Packer Parachute Repairman 405 Clerk-Typist Inspects, repairs, rigs, and packs parachutes, 624 Finance Clerk and makes repairs to leather and cloth flight clothing. FINANCE CLERK (624) Examines canopy, rigging, suspension lines, In a finance disbursing or administrative office pack, and harness of parachute for dirt, tears, rips, computes and processes vouchers for pay, allow and strains. Repairs small rips and tears in canopy ances and travel expenses of military and civ-

80 30 Jun 45 TM 12-427 C 2

ilian personnel and for supplies and nonpersonal Must be able to recognize enemy aircraft and services. armored vehicles, and flags, insignia, and uniforms Prepares schedules of collections and disburse of allied and enemy troops. Should be familiar with ments, accounts current and related papers, and the interpretation of aerial photographs. maintains cash book, cash blotter and other dis SUGGESTED SUBSTITUTES bursing records. Should be familiar with Army Regulations, War 076 Draftsman, Topographic Department publications, and established policies 733 Reconnaissance Car Crewman governing the disbursement of appropriated funds. 761 Scout (To be assigned only to Finance Department 814 Operations NCO duties.) FIRE CONTROL ELECTRICIAN, ANTIAIR SUGGESTED SUBSTITUTES CRAFT (AUTOMATIC WEAPONS) 055 Clerk, General (633) 623 Finance Typist-Clerk Maintains antiaircraft fire control equipment used with 37-mm and 40-mm automatic weapons, OFFICER CANDIDATE (625) including directors and data transmission systems. This Specification Serial Number is authorized Makes regular inspections and tests to determine for reporting purposes only and will not be used operating condition of fire control equipment. for classification of enlisted personnel. Makes certain that all dials on director register properly, that mechanism is kept clean, and that STUDENT (629) handwheels turn freely. Repairs or replaces defec tive or worn wire, gears, switches or other parts This Specification Serial Number is authorized within limits imposed. Inspects and supervises the for reporting purposes only and will not be used maintenance of other electrical equipment in bat for classification of enlisted personnel. tery. Makes adjustments, using such testing instru ments and tools as voltmeter and ammeter, in INTELLIGENCE NCO (631) sulated screw driver, pliers, snips, soldering iron, and specialized wrenches in director tool kit. Intelligence Specialist (AAF) SUGGESTED SUBSTITUTES Assist in collection, evaluation, interpretation, and distribution of information of enemy and coun- 634 Fire Control Electrician, Antiaircraft (Gun) 635 Searchlight Electrician terintelligence activities and the safeguarding of military information. FIRE CONTROL ELECTRICIAN, ANTIAIR- Collects, evaluates, interprets, and disseminates . CRAFT (GUN) (634) all enemy information secured by intelligence and reconnaissance units. Maintains situation maps Maintains antiaircraft fire control equipment such as order of battle, flak, and radar maps, aerial used with 90-mm, 105-mm, 120-mm, and 3-inch photographs, and records regarding enemy loca guns, including directors, data transmission systems, tion, strength, and probable intentions. Assists in and height finders. interrogation and search of enemy prisoners. May Makes regular inspection and tests to determine maintain liaison with other intelligence services operating condition of fire control equipment. and establish intelligence observation posts. May Makes certain that all dials register properly, that assist in the preparation for briefing and interro mechanism is kept clean, that handwheels turn gation of flying personnel. freely, and that all wiring connections are secure. Should be familiar with the use of drafting in Repairs or replaces defective or worn wire, gears, struments, balopticians, projectors, and mimeograph switches, or other parts. machines. Inspects and supervises the maintenance of other Must be capable of instructing others in intelli electrical equipment in unit. Makes necessary ad gence functions, observation and counterinforma- justments using such testing instruments as volt tion activities and in conduct to be followed in the meter and ammeter. event of capture. Must be capable of preparing Uses a wide variety of tools including insulated maps and sketches and interpreting aerial photo screw driver, pliers, snips, soldering iron, and spe graphs. cialized wrenches.

AGO 283A 81 TM 12-427 30 Jun 45 C 2

Sl'CGESTED SUBSTITUTES Must be familiar with the overall mission of AWS, 633 Fire Control Electrician, Antiaircraft (Auto and understand the functions of the various compo nent elements. Must be thoroughly familiar with all matic Weapons) wire and radio channel requirements within the AW 635 Searchlight Electrician organization. Completion of AW Plotting Board Technician SEARCHLIGHT ELECTRICIAN (635) Course at an Army school or equivalent experience Maintains antiaircraft searchlight and accessory is required. equipment including searchlight, control station, BALLOON ARMORER (639) power generator, and connecting cables. Makes regular inspections and tests to determine Installs, maintains, inspects, and repairs all lethal operating condition of equipment. Lubricates and devices and accessory equipment used in a coast cleans or checks internal mechanisms including artillery barrage balloon organization. panel hoard, brushes, electrical contacts, motors, Disassembles and assembles bomb units, shock and gears. Cleans mirror with special fluid pro absorber units, cable cutter units, stabilizing units, vided for that purpose. Diagnoses cause of faulty inertia links, and other assemblies or rigging. In operation, tracing out short circuits and replacing spects to locate mechanical maladjustment. Cleans, defective or worn parts. lubricates, and removes moisture or rust. Repairs or Uses variety of testing meters including volt replaces defective parts such as firing pins, plugs, meter, and ammeter, and hand tools including wire sheer wire, weight springs, shutters, arming pins, splicing set, insulated screw driver, pliers, file, swivels, cutters, and shackles. chisel, and soldering iron. Uses wrenches, pliers, screw drivers, soldering iron, hand press, and combination tool used with SUGGESTED SUBSTITUTES cable cutter to adjust parts. 571 Electrican, Harbor Defense 633 Fire Control Electrician, Antiaircraft (Auto FIELD LINEMAN (641) matic Weapons) Field Wire Chief Lineman 634 Fire Control Electrician, Antiaircraft (Gun) Field Wire NCO INFORMATION CENTER EQUIPMENT Works as member of team in laying, maintaining, TECHNICIAN (637) and taking up the wire or cable of a telephone or telegraph communication system. Supervises the installation, testing, repair and Runs wire along the ground by guiding it from general preventive maintenance d>f information cen a. wire reel of a wire truck. Fastens wire to poles, ter equipment. Supervises the installation of plot stakes, or trees, and carries it across roads or other ting boards, switchboards, telephone and auxiliary obstructions by burying it in a shallow ditch or sus equipment and supervises the operation of the pending it from trees, telephone poles, or lance switchboards. Supervises the connection of incom poles. Locates and determines the cause of line ing wire and radio channels to information center trouble such as opens, shorts, and grounds by test telephone facilities. Performs tests to locate equip ing wire at intervals. Makes appropriate repair ment failures and prescribes proper corrective ac such as splicing breaks and cutting out defective tion. Directs repairmen in elimination of troubles wire and splicing. and repair of equipment. Adapts available power May operate a portable field telephone switch sources to the requirements of the installation. Su board. May establish telegraph circuits by super pervises the installation of associated lighting and imposing them on existing telephone circuits, using other electrical equipment within the information repeater coils. May drive telephone repair truck. center. Maintains records pertaining to cables, ter Equipment used includes wire cutters, pliers, minal boxes, relay cabinets, connecting frames and wire, insulators, climbers, lineman's belt, wrench, power equipment. Maps layout of the telephone sys hammers, reel carts and reels, friction, tape, loading tem, location of frames, plotting tables, switchboards coils, field telephones, switchboard and repeating and power equipment. Instructs personnel in in coils. stallation and maintenance of equipment. Super vises and coordinates the work of subordinates. May SUGGESTED SUBSTITUTES act as wire chief of the communications platoon or 238 Lineman, Telephone and Telegraph section. 650 Telephone Switchboard Operator

AGO 283.A 30 Jim 45 TM 12-427 C 2

FIRE DIRECTION CENTER OPERATOR (645) strips, lamps or lamp strips, switches, ringing con verters and ringing machines, fuse panels, and recti Computer, Fire Direction fiers. Repairs wirelaying and recovery equipment; Horizontal Control Operator replaces gears, axles and roller bearings. Rewires Vertical Control Operator equipment units according to circuit diagrams using Prepares firing chart for vertical and horizontal color codes. Recables equipment assemblies by control, using protractor scale and straightedge reforming, fanning, and terminating wires on termi shoeing battery positions, check points, base points, nal strips or terminal lugs. Reassembles major targets, elevations, front lines, minimum and max items of equipment including carrier systems and imum ranges, and zones or sectors of supported units. repeater equipment using serviceable assemblies Performs any one or more of the following op and subassemblies on hand or accumulated from erations: calculates distances between points, calcu salvaged equipment. Salvages usable components lates coordinates from field notes, converts degrees and materials from equipment damaged beyond and minutes to mils, calculates elevation, reads hori repair. zontal angles between guns to targets and other Uses electrician's and mechanic's tools and vari points, interprets metro messages, calculates correc ous test instruments such as voltmeters, ammeters, tion factors for wind and weather components, or ohmmeters, and measuring bridges. N alerts firing battery by telephone and receives and Must have sufficient knowledge of the equipment transmits fire orders. to be repaired in order to disassemble and reassem Uses a special Manheim type slide rule, called ble component units. Must have knowledge of graphical firing table, to assist battery, battalion, principles of electricity. Must be able to read cir or higher commander in making trigonometric and cuit and wiring diagrams. ballastic calculations to obtain data for the prep SUGGESTED SUBSTITUTES aration and conduct of artillery fire. 095 Central Office Technician SUGGESTED SUBSTITUTES 097 Installer-Repairman, Tp & Tg 115 Automatic Telephone System 228 Survey and Instrument Man Maintenance Man 230 Surveyor, Topographic 243 Geodetic Computer RADIO REPAIRMAN, AIRCRAFT EQUIPMENT TELEPHONE AND TELEGRAPH EQUIPMENT (647) REPAIRMAN (646) Inspects, installs, tests, and makes major repairs Performs third and higher echelons of repair and on radio transmitting and receiving instruments and maintenance on all types of telephone, telegraph and related equipment in connection with air-ground facsimile equipment. or interplane communication. Locates, diagnoses and clears trouble. Connects Tests equipment, using such instruments as volt and adjusts equipment such as relays, jacks or jack meter, ohmmeter, tube testers, and oscilloscope.

AGO 283A 82A 770924 O - 47 - 3 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Isolates and corrects defects either by repairing provisations), replacements and substitution in units (including resistors, condenser's, and wiring) items of equipment such as antennas, audio fre or by replacing parts. Improvises or makes substitu quency units, radio frequency units, power supply, tions for defective parts when replacements are not and control accessories. available. Uses precision electrical and electronic instru Uses small machine and hand tools including ments and various types of small hand and light drill press, electric soldering iron, screw drivers, machine tools. and special wrenches. Must be able to make all necessary adjustments Must have general knowledge of the theory of or repairs of fixed radio station transmitting and operation of radio transmitter, receivers, and re receiving equipment, including accessories. lated equipment including antennas, control boxes, Must be able to tune transmitter channels to pre and power supply. Must be able to perform third scribed frequencies. and fourth echelon maintenance on aircraft radio Must be able to locate and counteract electrical equipment such as liaison sets, HF command sets, interferences. VHP command set. radio compass, interphones, and TELEPHONE SWITCHBOARD OPERATOR marker beacon. (650) SUGGESTED SUBSTITUTES Switchboard Operator 648 Radio Repairman Telephone Operator. Field 649 Radio Repairman, Fixed Station Installs, operates, and performs minor mainte nance on portable magneto type switchboards and RADIO REPAIRMAN (648) common battery switchboards. Radio Electrician Connects wires laid by linemen to switchboard. Radio Repairman, FM Equipment Operates switchboard, answering calls and making Installs, inspects, tests, and repairs amplitude necessary connections to complete circuit. Follows modulated or frequency modulated radio transmit prescribed procedure in answering and making ting and receiving instruments and related equip calls. Keeps station log and reroutes traffic if ment. normally used circuits fail. Performs minor main Tests equipment using such instruments as volt tenance on equipment, replacing worn out batteries, meter, ohmmeter, tube testers, and oscilloscope. Iso and repairing loose or disconnected wires and dirty lates and corrects defects either by replacing parts connections. or by repairing units including resistors, con May install short local lines, from switchboard densers, and wiring. Improvises or makes substitu to circuit. May climb poles, splice field wire, and tions for defective parts when replacements are make ties. not available. Uses simple hand tools such as insulated screw Uses small machine and hand tools including driver, pliers, and knife. drill press, electric soldering iron, screw drivers, Must be able to maintain field wire lines and read and special wrenches.. traffic and circuit diagrams. Must have general knowledge of the theory of op eration of radio transmitters, receivers, and related SUGGESTED SUBSTITUTES equipment including antennas, dynamometers, con 309 Telephone Operator trol boxes, and power supply. 641 Field Lineman SUGGESTED SUBSTITUTES SUBMARINE MINE LOADER (656) 647 Radio Repairman, Aircraft Equipment Ammunition Chief 649 Radio Repairman, Fixed Station Mine Assembler RADIO REPAIRMAN, FIXED STATION (649) Works as member of group engaged in loading high explosives and necessary detecting and deto Boehme Installer nating devices within submarine mine cases used Chief Radio Repairman for protection of coastal waters and harbor areas. Receiver Attendant Packs various types of high explosives within Maintains and repairs fixed radio transmitting mine cases according to prescribed plan. Screws and receiving equipment in proper operating con electric terminals, resistors, condensers, and relays dition. on base boards and solders wire to proper termi Tests circuits, tubes and other parts of equip nals. Assembles electrical devices into one unit and ment. Locates source of and diagnoses malfunc screws outlet wire to unit. Places assemblies into tioning. Makes adjustments, repairs (including im mine cases according to prescribed plan. Assists in

83 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL the manual work involved in carrying high explo determine whether it is functioning properly. Cleans sives to and from magazines. Scrapes, cleans, and and makes minor adjustments to the trainer. paints mine cases and buoys when not engaged in mine loading operations. SUGGESTED SUBSTITUTE Equipment used includes blocks and falls for 593 Link Trainer Mechanic movement of mine cases, hammers, wrenches, pli INSTRUCTOR (DESIGNATED SUBJECT) (659) ers (made of brass to prevent spaiks), high explo sive charges, and soldering iron. Educational Reconditioning Instructor Technical Instructor (AAF) Must be familiar with safety regulations govern ing handling of high explosives. Instructs military personnel in one or more mili tary and general education subjects taught at an SUGGESTED SUBSTITUTES Army service school, replacement training center, 078 Electrician or other military installation. 714 Mine Supply Maintenance Technician This Military Occupational Specialty is author 722 Submarine Mine Planter ized only when personnel permanently assigned to such instructional duty are not qualified in a mili MEDICAL AIDMAN (657) tary occupational specialty related to the course of First-Aid Man Medical Basic instruction. (See par. 16b, sec I.) Hospital Orderly Medical Corpsman (AAF) Litter Bearer TANK MECHANIC, MINOR MAINTENANCE . (660) Performs various duties to assist technicians in medical department activities. Assault Gun Mechanic, Minor Maintenance Administers first-aid treatment to sick, injured, Tank Engine Mechanic, Minor Maintenance or wounded. Treats minor injuries and wounds, such Inspects and performs minor maintenance on as cuts, blisters, contusions, and lacerations, apply tanks, tank destroyers, and other full-track-laying ing medicants and bandaging wounds. Makes and vehicles. applies arm or leg splints, treats patients for shock, Examines armor plate for holes, breaks, or loose and stops bleeding by approved methods. Lifts bolts. Checks the condition of the lighting, lubrica patient onto litter, and carries to aid station, ambu tion, fuel, and ignition systems, as well as other lance loading point, or collecting station. units. Operates, services, and adjusts all moving parts including engine, transmission, tracks, torsion Performs routine duties in the care and treatment bar suspension, steering brakes and other controls, of patients, taking temperature and pulse readings, turret traversing mechanism, gun mounts, and can bathing and feeding patients, and preparing pa non. Assists in diagnosing malfunctions. Removes tients for operations. Makes beds, cleans and washes and replaces worn or damaged sections of track equipment and floors, and assists in sterilizing in and torsion bar suspension. Removes bolted armor struments. Performs related duties as directed. plate to repair internal units. Assists in removal Must have received medical basic training. and replacement of transmission and final drive. LINK TRAINER INSTRUCTOR (658) Performs minor engine repairs. Performs periodic maintenance, checks and replaces such accessible Instructs and trains students or qualified pilots in engine parts as spark plugs, generators, starters, technique of instrument flying, using the Link and fuel pumps. trainer. Uses such tools as wrenches, pliers, hammer, Explains operation of equipment to trainee and screw driver, cold chisel, and other common me demonstrates use of its controls and instruments chanic's tools. and difference between operating characteristics of At supervisory level is responsible for control trainer and actual aircraft. Assigns a series of pro and coordination of maintenance activities of a gressive practice exercises to trainee which includes tank maintenance crew. simulated cross-country flights. During practice pe riods and test exercises, transmits simulated radio SUGGESTED SUBSTITUTE beam signals to trainee and operates equipment to 014 Automotive Mechanic (Second Echelon) give him flight instructions similar to those received in flight by radio from ground stations. Evaluates AERIAL TORPEDO MECHANIC (662) trainee's performance and maintains records per Assembles and installs aerial torpedoes used taining to operation of the trainer. Inspects trainer on combat missions and services those used for prior to use, and operates the controls in order to training.

84 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

Inspects and installs gyroscopes, exploder mech SUGGESTED SUBSTITUTES anism, and head. Tests air pressure in chamber and 055 Clerk, General checks fuel supply. Tests Lanyard and safety wire. 405 Clerk-Typist Checks main control halves connected with air chamber. Places torpedoes on bomb cart, transports MILITARY POLICEMAN, OCCUPIED TERRI them to airplane, and installs them on torpedo TORY (669) racks. Disassembles, lubricates, adjusts, and re Enforces military laws, regulations and ordi places worn parts of torpedoes that have been re nances, and local laws; maintains order; and con turned from training missions. trols individuals and traffic in territory in which Must be able to make mechanical adjustments United States forces are exercising military gov to close tolerances. ernment. Arrests offenders against the military government. FUEL CELL REPAIRMAN (665, Seizes firearms, explosives and other contraband Inspects and repairs self-sealing rubber airplane articles. Seizes and guards funds. Seizes and seals fuel tanks. records and archives. Guards captured materiel and installations. Controls, reinforces, or supplants lo Removes empty fuel tanks from airplane, usually cal police in the maintenance of public order. Pre from wing compartments. Inspects exterior and in vents or suppresses espionage, sabotage, and terior surfaces of tank for cracks, rips, and holes. rioting. Patches rubber, leather, plywood and metal con Assists in reducing areas of resistance, includ tainers composing fuel tank by using materials and ing the elimination of guerrilla activities. Assists in tools required. Determines whether damage to tanks the protection against vertical envelopments, com is too extensive to be repaired and recommends mando raids, and against any attack on vital in salvage. Repairs other equipment such as life rafts stallations, including lines of communications. As and rubber flying boots. sists in the care, control and evacuation of refugees Must be qualified to do sheet metal work. Should and local inhabitants. be thoroughly familiar with methods of treating May assist in the defense of command posts and rubber, leather, plywood, and metal materials used operation of prisoner of war collection points and in fuel tanks. straggler lines when attached to combat teams dur ing initial phase of occupation. MESSAGE CENTER CLERK (667) Must have knowledge of the use and care of ma Code Clerk Messenger-Dispatcher chine guns, carbines, rifles, pistols, shotguns, and Message Center Chief Panel and Code Clerk. submachine guns. Receives and logs incoming and outgoing mes Should possess tact, diplomacy, good judgment, sages, communications, and publications in a mes physical vigor and a commanding appearance. sage center and distributes them in accordance with Should be a high school graduate. Ability to speak prescribed procedures. one or. more foreign languages is desirable and pref erence should be given men who have traveled or Records time on incoming and outgoing com resided in a foreign country. munications, messages, and publications, and dis Must be capable of acquiring working knowledge tributes incoming messages according to a distribu of the language and customs of the areas to which tion code. Maintains a log indicating date and time assigned. of receipt, means of transmission and time of deliv ery of messages. Encodes and decodes messages in MASTER GUNNER, COAST ARTILLERY (670) accordance with standard operating instructions. Performs such duties as surveying, mapping, Must have a general knowledge of the methods drafting, orientation, gunnery, and photography in of operation of signal communication agencies, a fixed seacoast defense area or in a mobile unit. must have a thorough knowledge of the staff organi Plans, supervises, and executes field survey op zation of his own unit, and a general knowledge of erations, using surveyor's instruments to locate gun the organization of other units with which signal positions, observation stations, and similar points communication is maintained. by transit traverse or other survey methods. Meas May act as a messenger. May drive a light truck. ures base line between base end stations by run Knowledge of typing desirable. ning a line of levels to a point of known elevation At supervisory level, is responsible for control and making necessary computations to obtain accu and coordination of message center operations and rate horizontal distance between stations. Deter personnel. mines azimuth of base line by running a transit

85 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL traverse. Checks directions by making solar or theodolite. May also measure deviations and de stellar observations, and computes direction by velop film. astronomical methods. Computes distances and di rections from coordinates after they have been accu SUGGESTED SUBSTITUTES rately established. Converts grid coordinates into 670 Master Gunner, Coast Artillery geographical coordinates and vice versa. Prepares 832 Master Gunner, Antiaircraft (Automatic charts, snaps, and tables. Makes sketches and de Weapons) tailed drawings, blueprints, and tracings of build- iiiss, machine parts, or devices. Places local plane MEDICAL NCO (673) grids, standard military grids, and geographic Medical Administrative Specialist (AAF) grids on maps. Keeps post map and battery em Supervises personnel of a medical unit in thv placement books current. Prepares charts and scales administration or care and treatment of sick, in for-ail correction devices used for coast artillery fire jured and wounded. May assist in the supervision control. Sets up and operates a meteorological sta of the operation of hospital units or dispensaries; tion for fixed and mobile units to obtain wind veloc inspection of kitchens, mess halls, latrines, and ity, direction, and temperature in order to compute garbage pits; and cleaning and policing of wards. correction factors for nonstandard weather condi May supervise requisitioning of medical supplies. tions to be used in firing. Takes photographs during May instruct medical enlisted personnel in basic target practice. Develops and marks films to show training and such duties as first aid, nursing, and deviation of bursts from target. Operates photo- sterilization of instruments. May supervise prepa 'aboratory, using ordinary darkroom procedures. ration of medical records and reports. Must have good mathematical background and be able to solve computations involving plane and SUGGESTED SUBSTITUTES spherical trigonometry. Must be able to use slide 409 Medical Technician rule and use such tables as logarithm, grid, firing, 657 Medical Aidman. meteorological, surveying, ephemerides. and tables 861 Surgical Technician pertaining to projection of maps. MESSAGE CENTER CHIEF (674) SUGGESTED SUBSTITUTES (Specification Serial Number 667 will be used 227 Surveyor for Message Center Chief assigned to units below 230 Surveyor, Topographic a division.) 671 Master Gunner, Antiaircraft (Gun) Directs and coordinates all phases of message 1076 Observation Draftsman center operations at a divisional or higher level to insure the transmission of all messages' with the MASTER GUNNER. ANTIAIRCRAFT (GUN) utmost speed, accuracy, and security. Supervises (671) and instructs message center personnel in the func Performs a variety of duties in connection with tion of a message center and in the performance operations and survey functions of an antiaircraft of individual assignment. gun unit. Must thoroughly understand the use and relative Supervises crew making survey to determine advantages and limitations of the various means of length and direction of base lines for observation' communication as they pertain to security, transmis of predatory record fire, and spotting and adjust sion speed, traffic capacity and current effectiveness ment of fire for effect. Determines coordinates and for the type of message to be transmitted. orienting lines for battalion observation posts, bat Must be able to encipher and decipher, or encode tery directing points,- and battery flank observing and decode classified messages and understand the stations for predatory fire and spotting. Determines operation of all cryptographic equipment and cryp and marks limits of fires for automatic weapons tographic systems peculiar to the unit. Must have and machine guns. Plans and supervises minor cryptographic clearance. constructions, including drainage systems, grading, and roads. Supervises surveys for preparation of SUGGESTED SUBSTITUTES topographic maps of small areas. Using alidade, 667 Message Center Clerk plane table, and drafting set, prepares and main 805 Cryptographic Technician tains special maps, charts, overlays, sketches and such, miscellaneous drafting as may be required. MILITARY POLICEMAN (677) May supervise weather observers in obtaining Provost Sergeant data for weather report, and orienting and leveling Assists in the enforcement of military laws and 86 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES regulations, maintenance of order, and control of gunsights and related equipment. Repairs electrical traffic. and hydraulic systems and makes minute adjust Assists civilian police in securing compliance ments to alignment of sights. with civil laws by military personnel. Protects BOMBSIGHT MECHANIC (683) civilians and military personnel from violence in areas under military jurisdiction. Inspects, cleans, tests, lubricates, calibrates, and Furnishes information regarding location of units makes minor parts replacements to bombsights and and other establishments. Guards property in de associated automatic flight control equipment. fense areas against sabotage. Quells uprisings and Removes bombsight from airplane and mounts it outbreaks in areas under guard. Prevents and in on test stand. Tests operation of gyroscope unit, vestigates criminal action. Accepts custody of en visually checking its balance and condition of its listed men who have been apprehended by civilian small electric motors and electrical connections. police for minor violations. Controls stragglers and Checks accuracy of computing mechanism and re circulation of individuals. places bearings and other moving parts as specified May receive and act as guard of military pris in technical orders. oners, including their custody, care, processing, and Must be skilled in the use of small wrenches, evacuation. May supervise other military policemen pliers, and jeweler's screw drivers. in carrying out police or guard functions. SUGGESTED SUBSTITUTES Must be tactful and courteous and be an out standing example of soldierly conduct and bearing. 957 Airplane Electrical Instrument Mechanic Must understand duties of a military police organi AIRPLANE POWER PLANT MECHANIC (684) zation and the regulations which apply to its or In connection with the inspection maintenance, ganization. Must have knowledge of use and care and repair of airplanes, observes operation of air of hand weapons such as pistol, riot gun,- and sub plane power plants and makes adjustments nec machine gun. essary to proper functioning. POWER TURRET AND GUNSIGHT MECHANIC Diagnoses power plant malfunctioning. Adjusts (678) and repairs such features of power plant as car buretors, superchargers, injectors, fuel and oil Inspects and repairs airplane power turrets in pumps, and ignition units. Makes unit replace which machine guns are mounted and services the ments of defective power plant parts. Supervises automatic, self-computing sights of these weapons. and assists in removal and installation of airplane Inspects turrets for cleanliness and checks con engines. Makes required ground tests of airplane dition of such features as electrical wiring and power plants. tightness of electrical connections. Starts actuating mechanism and operates hand controls of turret to AIRPLANE ELECTRICAL MECHANIC (685) observe its functioning. Moves turret through va Inspects and performs 1st and 2nd echelon main rious azimuths and elevations and checks its speed tenance of aircraft electrical equipment other than and smoothness of operation, noting any binding or radio transmitters and receivers and aircraft in slipping in gear trains, or other malfunctioning. struments. Removes turret from mounting when repairs are Examines electric wiring, auxiliary electric mo necessary. Such repairs include adjustment and tors, ignition systems, and lighting units for proper replacement of defective electric motors, electrical functioning. Uses a combination electrical continu controls, horizontal and vertical electric motors, ity tester and ohmmeter, ammeter, and voltmeter gear trains, and a wide variety of small parts. Fills to locate short circuits and to test currents and re oil cups and hub dial with lubricant. Checks align sistances. Traces circuits with aid of Blueprints. ment of self-computing gunsights, calibrates con Tightens and solders loose electrical connections. trols, and replaces mirrors and other parts. Re Cleans, repairs, and replaces electric motors igni move5, cleans, and replaces machine guns in turrets. tion units, recognition and lending lighting units, relays, junction boxes, and other related equip POWER TURRET AND GUNSIGHT REPAIR ment. MAN (681) Uses such tools as screw drivers, adjustable, Performs third and fourth echelon maintenance open-end, crescent, and box-end wrenches, wire and repair of airplane power turrets, service type cutters, pen knife, file, and pliers. gunsights and related equipment at a repair depot. Must be familiar with aircraft electrical systems Disassembles, readjusts, repairs, and replaces and with basic electrical theory. Must be able to parts and reassembles all Service power turrets, read blueprints to trace electric circuits.

37 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

AIRPLANE INSTRUMENT MECHANIC (686) ing, and insufficient or excessive tension. Removes Tests and analyzes the functioning of aircraft defective cable and makes repairs by splicing in instruments to reveal defective units. new strands. Splices loops at ends of cables when Examines exterior of instruments for cleanliness, they will be attached to mountings. Installs re security of mountings and connections, tightness paired cables and adjusts their tension, and operates of electrical binding, condition of cases, vibration airplane controls to test their tension. absorbers, and cover glasses. Checks instrument In addition to these duties, usually performs air pointers for excessive oscillation, proper zero set craft sheet metal work. ting, and correct indication. Uses combination test Tools and equipment include splicing rings, pli set to analyze operation of electrical instruments. ers, wire cutters, wrenches, and screw driver. Observes operation of gyro-operated instruments in various positions and locates such faults as worn FLEXIBLE GUNNERY TRAINER OPERATOR- bearings. Notes whether readings of pressure in MECHANIC (691) struments are consistent with factors measured. Operates and maintains synthetic gunnery train Replaces instruments when faulty operation is^ ing devices consisting of as many as four motion caused by defective internal mechanism. Services picture projectors running simultaneously for three- the directional gyro, gyro horizon instruments, and dimensional target picturization, motion picture automatic pilots. Checks oil in dash pots of auto sound equipment, and coordinated machinery for matic pilot and inspects and adjusts the air relays, firing of one to four guns at projected targets. balanced oil valves; pressure regulators, suction Must be familiar with operation, maintenance, regulators, servos, and oil pumps of the unit. and wiring of cameras, sound equipment, photo electric cells, and electrically operated scoreboard. AIRPLANE PROPELLER MECHANIC (687) Must be capable of threading, splicing, and editing Removes, inspects, cleans, services, and replaces film. various types of airplane propellers. Removes propeller dome assembly, disconnects HEIGHT FINDER OBSERVER (692) propeller from engine, and "pulls" propeller from Operates a large horizontal base stereoscopic mounting. Examines blade surfaces for presence of range finder in the range section of a seacoast or dirt, scratches, nicks, and cracks. Polishes surface antiaircraft artillery battery to determine distances imperfections with fine abrasive paper. Sprays in in yards to fixed points, enemy seacraft, and enemy terior of hub and dome with lubricant. Checks pro aircraft. , peller for proper tracking, and adjusts vertical and Supervises height finder team consisting of an horizontal balance by adding small washers or azimuth tracker, elevation tracker, and reader. other suitable weights at base of blades. In service Prepares instrument for operation. Levels instru or depot organization, performs various'additional ment, using spirit level. Sets off interpupilary dis maintenance tasks such as the following: Tests hub tance between the lenses. Focuses eyepieces to ac concentricity and blade angle, using micrometers commodate own eyes. Determines correction factors and gauges; locates internal defects in blades and for range, and calibrates the instrument by means other parts with a magnaflux; removes blades and of an adjusting dial. Operates instrument by sight disassembles and inspects control mechanisms. ing on the object. Determines distances by adjust TOW TARGET REEL OPERATOR (688) ing stereoscopic image so that object sighted ap pears at the same depth as the reticule scale within Operates and disassembles, cleans, repairs, reas the optical system. sembles reel and working parts of tow reel windlass Must possess normal vision in both eyes with mounted in airplane for towing aerial targets. Rolls stereoacuity of not less than 80 percent. and launches target, brakes cable to maintain proper tension, and releases and replaces targets while in VETERINARY AMBULANCE ORDERLY (700) flight. Splices cable when necessary. Must be physi Assists in loading, unloading, and caring for sick cally qualified to take part in frequent aerial flights. or wounded animals. Restrains animals en route and performs first aid. AIRPLANE CABLE MECHANIC (689) May assist ambulance driver by relieving him. Examines, tests, and repairs the metal cables of Must be familiar with technical procedures inci airplane control systems. dent to the care and treatment of animals. Must be Visually examines cables which connect controls familiar with casualty classification. Should have with operating mechanisms (such as elevators and knowledge of veterinary first aid, anatomy, physi rudders) for loose or broken strands, loose mount ology, care and treatment of wounded animals dur- SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES ing transportation, and methods of handling unruly triangulation based on statistical tabulation of call animals. signs, operating procedures, frequency tables, and traffic analyses. Deduces and extracts information COXSWAIN, RADIO TARGET BOAT (703) of military value from intercepted traffic without Operates, either by local or remote radio control, recourse to cryptanalysis of the text. a high speed radio target boat used either as a May assist in the supervision of training of per target itself or a means of towing targets. sonnel engaged in the above work. Must have crypt Adjusts the electromechanical linkage system of ographic clearance. the boat which is used to regulate throttle and Should be familiar with the use of radio call steer boat. Tests and adjusts all radio control equip signs and procedures. ment, using radio repairman's tools and equipment. Some knowledge of radio operation, world geog Maintains and services a high-powered gasoline raphy, enemy language, or statistical procedure de engine. sirable. Must have knowledge of theory and operation of radio equipment and gasoline motors. STABLE SERGEANT (710) SUGGESTED SUBSTITUTES Supervises the care of animals and equipment in field or camp for a military organization using 647 Radio Repairman, Aircraft Equipment animals as means of transport. 648 Radio Repairman Supervises and controls care, feeding, and water FUMIGATION AND BATH MAN (706) ing of animals. Receives, checks, cares for, and Fumigation Chamber Operator determines fitness of forage and bedding. Instructs Operates one or more pieces of portable equip personnel in performing such duties as grooming, ment used to disinfest clothing, equipment, and clipping, managing, and caring for animals and in personnel. the care of harness, saddles, bridles, and related Assembles and operates fumigation chamber or equipment Supervises cleaning of stables, corrals, ivater heating unit. Seals fumigation chamber and and picket lines, taking necessary measures to in introduces correct amount of toxic gas (methyl sure satisfactory sanitary conditions. Inspects ani bromide) using attached engine, fan, and ducts. mals for sores, cuts, and skin abrasions, and ad Tests for leaks using Halide leak detector. After ministers first aid treatment. Carries out veterin appropriate period determined by outside tempera- arian's instructions regarding care of sick animals. lure, permits gas to escape. Opens chamber and Maintains forage record, shoeing record, morning removes bags of fumigated clothing. report of animals, property record, and a horse Sets up equipment for bathing of personnel. As record card which contains pertinent descriptive sembles shower heads, connects water hose, and data for each animal. starts and operates water heating unit consisting Should have civilian experience as horse trainer, of gasoline engine, generator, transformer, water groom or barn boss. pump, oil pump, blower, fire tubes and boiler. SUGGESTED SUBSTITUTES Checks water, oil, gasoline, voltage, and tempera ture dials. Keeps water at correct temperature and 094 Horseshoer regulates controls. Assists in setting up equipment 713 Packmaster to secure adequate water supply, drainage, and pro PACKER, ANIMAL (712) tection from aerial observation and attack. Cleans fire tubes and boilers and performs minor mainte Slings and unslings loads on horses or mules used nance and repair, using simple hand tools. in transporting ammunition, materiel, and other Must know how to pitch large tents. cargo necessary for the functioning of field units operating in mountainous or jungle terrain. SUGGESTED SUBSTITUTES Saddles and unsaddles pack animals with a 014 Automotive Mechanic (Second Echelon) Phillips pack saddle designed for hanger positioned 846 Portable Power Generator Operator or rope-hitched loads. Prepares cargo for loading by bundling (lairing) in pack covers or manias TRAFFIC ANALYST (RADIO) (709) depending upon size, shape, and number of bundles Traffic Analyst E to be loaded on one animal. Slings load to back of Assists in the editing, preparation, logging, and animal by hand placing it in proper position for tabulation of communications traffic and in the transport. Lashes load to pack saddle with ropes, control of the activities of intercept agencies to tying such knots as single diamond hitch, double obtain the maximum amount of intercept coverage. diamond hitch, squaw hitch, and cross tie sling. Reconstructs communication networks by graphic Slings hanger loads by means of special hangers 89 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL which fit over hanger bars of pack saddle and connecting sleeve to cable sheathing by lead joint, secures them by means of a canvas cinch or by 1 using such tools as hacksaw, chipping knife, ham Straps which buckle in staples of saddle. mer, mallet, gasoline burner, and wire cutter. Re May maintain animals in line during marches cords length of time in use and location of each by walking beside pack animal or by manipulation piece of cable. Keeps record of mine equipment of bridle reins while mounted or on foot. such as buoys, mines, mine casings, lead anchors, Must have more than average strength and be distribution boxes, and ordinary tools such as pliers, capable of enduring long marches on foot over wire cutters, wrenches, and hammers. Cleans, rough terrain. Must understand care and manage scrapes, and repaints buoys and mine casings. ment of mules or horses. May supervise a group of workers engaged in the above duties.' SUGGESTED SUBSTITUTES SUGGESTED SUBSTITUTES 565 Pack Driver 1531 Gun Crewman, Pack Artillery 039 Cable Splicer, Telephone and Telegraph 656 Submarine Mine Loader PACKMASTER (713) 722 Submarine Mine Planter Cargador Supervises, directs, instructs, and controls pack OXYGEN AND ACETYLENE PLANT OPERATOR train personnel in the packing, training, condition (719) ing, and care of pack animals and in the care and Foreman, Oxygen and Acetylene Plai;t maintenance of the Phillips pack saddle and har Operates equipment to produce oxygen and nitro ness. gen or acetylene. Directs personnel in saddling, packing, and lash In an oxygen plant, manipulates valves to pass ing operations and in movement or emplacement air through a'series of units that compress the air, of animals. Observes animals during march, check remove carbon dioxide, moisture, oil content,. and ing saddle adjustment and adjusting loads in order separate liquid air into nitrogen and oxygen. Passes to prevent sores, cuts, and skin abrasions, admin liquid oxygen or nitrogen into expansion chamber istering first aid treatment when necessary. Adjusts and. compresses oxygen into high pressure cyl pack saddle to fit individual animals by adding to inders. Cleans equipment, blows out tubes, and or removing hair from saddle pads, using such cleans and refills driers. In an acetylene plant, tools as Hair hook, stuffing rod, and hammer. Re manipulates valves to let water into generator, pours pairs breaks in harness, bridles, and leather equip calcium carbide into hopper, and starts motor to ment on saddles and replaces such hardware held activate device that sifts carbide into water produc by leather binding as hasps, rings, and snaps by ing acetylene gas. Opens valves, letting gas into sewing or riveting, using such tools as saddler's storage chamber. Compresses acetylene into high clamps, punch riveting hammer, punches, riveting pressure cylinders and removes sludge from gen anvil, rivet cutting nippers, draw gauge, saddler's erator. Maintains generating equipment. anvil, pegging awls, thimble, needle, shears, divider, May supervise other operators. and pliers. Must be familiar with processes, precautions, May perform duties of a stable sergeant. and hazards involved in manufacturing oxygen and nitrogen and generating acetylene. SUGGESTED SUBSTITUTES 094 Horseshoer SUBMARINE MINE PLANTER (722) 192 Saddle and Harness Maker Chief Submarine Mine Planter 710 Stable Sergeant Planting Aft Detail Planting Detail MINE SUPPLY MAINTENANCE TECHNICIAN Planting Port Detail • (714) Planting Starboard Detail Receives, stores, and tests mine cable and cleans Works on an Army mine planter as member of and maintains mine equipment exclusive of explo a group engaged in lowering and raising submarine sives. mines used for protection of coastal waters and Tests used and unused cable by electrical instru harbor areas. ments such as bridge megger and fault finder to Assists in raising and lowering submarine mines determine insulation and conductor resistance. Ap by means of ship davits, chain blocks, and cat proves or rejects cable thus tested. Renovates used heads. Connects mine cables to proper mines and cable by cutting away deteriorated parts, drying out makes a watertight electrical joint between loading moisture, sliding metal sleeve over splice, and wire of mine and single conductor mine cable. As- 90 12 Apr 45 TM 12-427 C 1 GAS GENERATING PLANT OPERATOR (719) ers. compressors and pumps; observes thermometers and gauges during operation, making necessary ad Foreman, Gas Generat Acetylene Generating justments of burners, by-pass valves, pumps, etc., ing Plant Plant Operator to maintain efficient and safe operation; operates Oxygen Generating Hydrogen and Carbon cleaners, dryers, or similar devices for cleaning or Plant Operator Dioxide Generating for removing impurities in the gas; compresses gas Plant Operator when necessary into high pressure cylinders; in spects- cleans, and maintains parts of the generating Operates and maintains at least one type of the equipment. May supervise other operators. gas generating plants used by the Army, such as tho Must be familiar with processes, precautions and oxygen and acetylene generating plant or the meth- hazards involved, including sources of danger and anol type hydrogen and carbon dioxide generating emergency measures to be taken. plant. Completion of Army school course in the opera Operates gas generating plant; regulates valves to tion of gas generating plants or equivalent experi proper settings; starts and maintains engines, burn- ence required.

9OA SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES sists in movin'g auxiliary equipment such as anchors, to determine adequate water supply in advance of rope, buoys, and cable from dock to ship prior to troops. planting operations. Assists in cleaning, painting, When assigned to Transportation Corps should and oiling mine equipment during periods when be able to treat boiler water chemically. mine planter is riot at sea. Must be above average in physical strength. PIONEER (729)

SUGGESTED SUBSTITUTE Motorboat Operator Engineer Basic Operates as .member of crew of specially trained 065 Seaman troops in constructing and repairing roads and bridges, removing natural and man-made obstacles RANGE SECTION OPERATOR, COAST ART1L to facilitate movement of friendly forces, executing LERY (724) demolitions, and creating man-made obstacles to Plotter prevent or slow advance of enemy forces. Acts as member of a plotting room team, per In advances against, enemy, precedes friendly forming various duties in connection with deter forces and clears passage ways. Makes temporary mination of firing data for seacoast artillery guns repairs to roads which may have been destroyed, of various calibers. such as filling in bomb crater holes. Makes repairs Calculates and plots uncorrected range and azi to demolished bridges or erects temporary bridges.! muth on a mechanical plotting board. Measures Sets up, braces, and rigs lighter vehicles which distance between plotted points and calculates set- cannot ford a stream and pulleys them across, us forward point using a special slide rule to deter ing logs, heavy rope, and wire. Disables and re mine point at which target should be when projec moves antitank land mines, road blocks, and wire tile lands. Calculates corrected range and deflec entanglements laid by enemy forces. In retreat tion for non-standard ballistic conditions and relays from enemy, remains behind to impede enemy ad correct data to guns for firing. vance. Employs dynamite to blow up bridges, roads, and buildings. Lays antitank land mines and WATER SUPPLY TECHNICIAN (727) other dynamite traps to disable enemy vehicles. Filter Operator, Foreman, Water Supply Creates obstacles, such as erecting road blocks with Water Supply Water Supply Engineer logs or wire. May operate outboard motors. Filter Unit Operator Water Supply Man Equipment'includes air compressors; demolition Operates mobile water purification equipment sets, consisting of supplies of dynamite, primer at a water point and issues water to troops. cord, time fuzes, and electric and nonelectric firing Connects water hose between water source, water caps; pioneer sets, consisting of hammer, saw, ax, pumps, and filter unit. Starts four-cylinder inline machetes, grappling hooks, 36-inch wrecking bars, gasoline engine which actuates centrifugal water and 5-foot crow bars; heavy rope and wire. pump and leads water through filter unit and chem At supervisory level is responsible for coordina ical treating unit to canvas storage tanks from which tion and control of group men engaged in pioneer or purified water is issued. Prepares hypochlorite demolition activities. solution for purification, and alum and potash SUGGESTED SUBSTITUTES solution for filtration of water. Pours solutions into respective feed tanks and regulates rate of flow 189 Rigger into unit. Performs standard tests at regular in 356 Foreman, Labor tervals, using chemical indicators and comparator 533 Demolition Specialist to insure that water is filtered and neutral and that residual concentration of chlorine is not too high. SMOKE GENERATOR OPERATOR (731) Cleans and washes sand filter by reversing direction Smoke Generator NCO of water. Performs minor maintenance on water Operates and maintains a portable smoke gen purification equipment. erator used in laying down smoke screens for de May keep simple records of quantity of water fensive or offensive purposes. issued. May drive truck on which equipment is Obtains and interprets information as to wind, mounted. May assist water supply noncommis direction, humidity, density, and other factors affect sioned officer in locating water point. ing laying of smoke screens. Receives directions Must know principles of water purification, in where generator is to be driven and familiarizes him cluding correct portion of chemical solutions self thoroughly with the exact location by means needed to purify water. of maps previously prepared. Drives truck to pre May supervise other technicians. May reconnoiter arranged location and starts gasoline engine which 91 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL controls pumps of smoke generator. Pulls lever on sions on foot or mounted to obtain information con smoke generator to start flow of smoke and con cerning enemy. tinues to watch gauges and make minor, adjust Equipment includes antitank guns such as the ments. Watches pressure gauges and dial ther 37-mm and 57-mm light and heavy machine guns, mometers to determine proper functioning of gen and small arms. erator pumps and checks valves. Tightens- belts Must be thoroughly familiar with reconnaissance and bleeds oil. lines when reading of gauges shows techniques, scouting, and patrolling. Must be able generator is not running properly. Performs or to read maps and compass. Must be able to operate ganizational maintenance on truck and smoke gen traversing - and elevating mechanisms on antitank erator, using screw driver, pliers, S-wrenches, gun. Must be familiar with lead markings in sight socket wrenches, and grease guns. Makes minor to track moving targets. Must be capable of making adjustments to electric generator used for lighting accurate range estimations. Must be familiar with oil burners and may disassemble and clean small driver maintenance. burner. At supervisory level is responsible for control and tactical employment of reconnaissance crews, SUGGESTED SUBSTITUTES weapons, and vehicles. 014 Automotive Mechanic (Second Echelon) 345 Truck Driver, Light SUGGESTED SUBSTITUTES 931 Truck Driver, Heavy 610 Antitank Gun Crewman 761 Scout AMPHIBIAN TRACTOR DRIVER (732) FULL-TRACK DRIVER (735) Operates a gasoline or Diesel-powered amphibian tractor used in transporting supplies, equipment, Operates a gasoline or Diesel-powered high-speed and personnel to points oh land. caterpillar tractor to drag or tow heavy artillery Prepares tractor for debarkation, checking en weapons, construction equipment, and other mili gine, hull, tracks, and equipment. Maneuvers tractor tary equipment and materiel. in water to prevent crashing into other craft and Makes preoperation inspection of tractor by grounding on sand bars or reefs. Controls loading checking condition of brakes, steering mechanism, of tractor and supervises stowing, bracing, and motor, transmission, tracks, bogey, and drive lashing of cargo. Is responsible for driver main wheels. Operates tractor by manipulating levers tenance. Maintains log of operation, recording and controls to control forward, reverse,- or turn compass course, distances, buoys, vessels passed, ing movements. Hitches draw bar to weapons or currents, and landing conditions. equipment to be towed or attaches tow line to May evacuate casualties from land points to tractor and equipment. Tows artillery or equip ships. ment on roads and cross country. Camouflages Must be familiar with navigation rules, harbor tractor and towed equipment for protection against markers, and cargo stowage. Should have prior enemy air and armored units. Services, cleans, experience as track vehicle driver. and lubricates tractor. Makes minor repairs to track, bogey, and drive wheels and engine. RECONNAISSANCE CAR CREWMAN (733) May drive a tank.* Antitank Gunner Should know general principles of internal com Intelligence Observer bustion engines, power transmission, and electrical Radio Telephone Operator systems of caterpillar tractors. Reconnaissance Car Commander Must have an Army motor vehicle operator's Reconnaissance or Scout Car Driver permit. Scout Car Commander FLIGHT ENGINEER (737) Scout Car Crewman Operates the engine control panel on very heavy Operates as member of reconnaissance car crew 'multiple-engine airplanes. in combat in reconnoitering advance and enemy At the pilot's direction adjusts throttle, mixture, territory for information of military value. supercharger and propeller pitch control to obtain As crew member, drives vehicle on which gun varying conditions of engine speed, manifold pres is mounted; lays, aims, and fires gun in accordance sure, and fuel consumption. Performs such items with fire orders from reconnaissance car com of maintenance and adjustment as are possible dur mander; loads gun with ammunition; maintains ing flight, such as correcting malfunctions of en- radio communication where necessary when radio *See 1736 Light Tank Crewman. silence is not prescribed; or performs scouting mis 2736 Medium Tank Crewman. 92 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES gines, cabin supercharger systems, landing gear, INTERCEPT OPERATOR-J (739) etc. Maintains the weight and balance of the air Identifies and intercepts Japanese military radio plane during flight within allowable limits. Advises signals by means of a radio receiver. Copies inter pilot as to computations of cruising range and data cepted messages and relays them for translation relative to fuel consumption. Advises pilot as to and decoding. engine performance; weight and balance; and air Assembles, installs, operates, and maintains radio worthiness of the airplane. Maintains a flight log receiving and direction-finding equipment includ and other necessary records during flight. ing auxiliary accessories such as frequency meter, Assists the ground crew chief with the daily and ink and sound recorders, panoramic adaptors, an preflight inspections and reports to the pilot any tenna systems, and power units. Tunes in radio deficiencies in the inspection and maintenance of receiver on an assigned frequency or by searching airplane. Directs loading of airplane. over a band of frequencies. Records intercepted ' Must be physically qualified for flight duty, must traffic by typewriter or by transcribing data from have completed flight engineers course. Must be sound and siphon ink recordings. Operates direc capable of rapid arithmetical computations. Should tion-finding equipment, takes bearings and plots have previous experience as crew chief or similar them on a map. Maintains station logs and other responsible duty on two- or four-engine aircraft. records pertaining to the handling of messages. Performs first echelon maintenance by inspect INTERCEPT OPERATOR-G (738) ing, dusting and oiling equipment; making simple Identifies and intercepts German military radio repairs or adjustments such- as changing tubes, ad signals by means of a radio receiver. Copies inter justing frequencies, and siphon recorder pen. Uses cepted messages and relays them for translation simple hand tools. and decoding. Must be able to receive and copy (without error) Assembles, installs, operates, and maintains radio on a standard typewriter for a minimum period ojf receiving and direction-finding equipment including 3 consecutive minutes out of 5: International Morse auxiliary accessories such' as frequency meter, ink Code sent at a speed of 30 four-letter random code and sound recorders, panoramic adaptors, antenna groups per minute; Japanese Radiotelegraph Code systems, and power units. Tunes in radio receiver in Ramaji sent at a speed of 75 characters per on an assigned frequency or by searching over a minute. band of frequencies. Records intercepted traffic Must have working knowledge of combined radio by means of hand printing or typewriter or by telephone, radiotelegraph, and authentication pro transcribing data from sound and siphon ink re cedures. Must be familiar with and understand the cordings. Operates direction-finding equipment, use of procedure signs and signals employed in takes bearings and plots them on a map. Maintains Japanese military radio communications. station logs and other records pertaining to the SUGGESTED SUBSTITUTE handling of messages. Performs first echelon maintenance by inspecting, 766 Radio Operator, High Speed, Manual dusting, and oiling equipment; making simple re pairs or adjustments such as changing tubes, ad RADIO OPERATOR, INTERMEDIATE SPEED justing frequencies, and siphon recorder pen. Uses (740) simple hand tools. Installs and operates, tactical field radio trans Must be able to receive International Morse Code mitting and receiving equipment; sends and receives (including special German characters) by hand messages by International Morse Code (CW, ICW, printing at a speed of 20 five-letter random code or tone) signals and by light signals. Normally groups per minute and by typewriter at a speed of operates in divisional, brigade, and equivalent 25 five-letter random code groups per minute both radio nets. for a minimum period of 3 consecutive minutes out Receives CW, ICW, or tone signals and prints of 5, without error. pencil copy at a minimum speed of 18 five-letter Must have working knowledge of combined radio random code.groups per minute without error for telephone, radiotelegraph, and authentication pro a minimum period of 3 consecutive minutes out cedures. Must be familiar with and understand the of 5. use of procedure signs and signals employed in Transmits CW, ICW, or tone signals, using hand German military radio communication. key, at a minimum speed of 18 five-letter random code groups per minute without error for a mini SUGGESTED SUBSTITUTE mum period of 2 consecutive minutes out of 3. 766 Radio Operator, High Speed, Manual Handles, without error, a minimum of 18 plain-

(il'OOHS O——44———1 93 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL dress normal form messages (averaging 10 five- stoppages as they occur and cleans and oils piece. letter random code groups of text) per hour in a Must be able to use hand weapons, including field radio net of two or more stations through rifle, automatic rifle, rifle grenade launcher, bay natural interference. onet, trench knife, and hand grenades. Must be Receives and transmits messages by light signals trained in taking advantage of camouflage cover at a minimum speed of 5 words per minute. and concealment, recognizing and following arm Maintains records pertaining to the handling of and hand signals, and identification of enemy per messages. sonnel, vehicles, and aircraft. Must be familiar Performs first echelon maintenance by keeping with hand-to-hand fighting techniques. Must un equipment clean, inspecting cords, plugs, antenna derstand methods of defense against enemy weapons. mast, receiver, transmitter and calibration charts, SUGGESTED SUBSTITUTES and making minor repairs or adjustments such as changing tubes, adjusting frequencies, and adjust 604 Light Machine Gunner ing key, using simple hand tools. 745 Rifleman Must possess a working knowledge of Combined Radiotelephone, Radiotelegraph and Authentication AIRPLANE AND ENGINE MECHANIC (747) Procedures. May be required to encipher and de Assists in performing prescribed inspections and cipher messages using Converter M 209. maintenance of aircraft. SUGGESTED SUBSTITUTE Examines portions of aircraft such as wings, fuse lage, stabilizers, flight control surfaces, propeller, 776 Radio Operator, Low Speed and landing gear for evidence of damage of wear such as cracks, bent or broken members, and loose RIFLEMAN (745) ness which might cause dangerous vibration. Cor Rifle Noncommissioned Officer rects such defects by appropriate maintenance, Security Noncommissioned Officer minor repairs, adjustments, or unit replacement. Loads, aims, and fires a rifle to destroy enemy Refers specialized repairs on propellers, instru personnel and to assist in capturing and holding ments, hydraulic and electrical systems to appro enemy positions. priate specialist. Cleans all accessible structures Places fire upon designated targets or distributes and parts with appropriate cleaning agents. Manip fire upon portions of enemy line, changing position ulates controls in cockpit to insure proper opera as situation demands. tion and alignment of flight control system. Makes Must be able to use hand weapons, including required adjustments by correcting tension of con rifle, automatic rifle, rocket launcher, rifle grenade trol cables or by replacing badly worn control launcher, bayonet, trench knife, and hand grenades. cables. Assists in inspection and maintenance of Must be trained in taking advantage of camouflage, engine and in changing engines. At stipulated inter cover and concealment, entrenching, recognition vals, and with assistance of other mechanics, discon and following of arm and hand signals, and recog nects engine from its mounting, removes it from nition of enemy personnel, vehicles, and aircraft. airplane and makes replacement, using mechanic's Must be familiar with hand-to-hand fighting tech tools and equipment, and technical orders as a guide niques. Must understand methods of defense to maintenance procedures. Assists in preparing against enemy weapons. engines and other units for shipment. Is responsible for inclusion in airplane of mis SUGGESTED SUBSTITUTE cellaneous equipment such as life rafts, parachutes, 746 Automatic Rifleman adequate supply of breathing oxygen, appropriate forms, and technical orders in proper storage places. AUTOMATIC RIFLEMAN (746) Must have a knowledge of Army Air Forces Ammunition Bearer forms and technical orders and weight and balance Rifle Noncommissioned Officer procedures. Security Noncommissioned Officer Loads, aims, and fires an automatic rifle to pro AIRPLANE MECHANIC-GUNNER (748) vide fire power support to tactical units in captur Aerial Engineer-Gunner ing and holding enemy positions. Assists pilot in operation of a multiple-engined Fires rifle either semi-automatically or in short airplane by maintaining a constant check on its bursts, as situation demands, upon designated tar mechanical functioning. Fires aerial guns in combat. gets or distributed upon portions of enemy lines, Notes readings of engine and navigation instru changing position as situation demands. Reduces ments, reporting any indication of malfunctioning, 94 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES and maintains log of engine performance. Makes Receives International Morse Code signals copy limited repairs, and mechanical adjustments while ing by hand-printing at a minimum speed of 16 in flight. Transfers fuel from one tank to another five-letter random code groups per minute without as consumed, in such manner as to maintain balance error for a minimum period of 3 consecutive min of airplane. Assists pilot in deciding whether air utes out of 5. plane should be grounded when serious malfunc Transmits International Morse Code signals, us tioning develops. Reports needed repairs to main ing hand key, at a minimum speed of 16 five-letter tenance crew. random code groups per minute without error for a minimum period of 2 consecutive minutes out of 3. AIRPLANE MAINTENANCE TECHNICIAN (750) Handles without error, a minimum of 15 plain- Airplane Crew Chief Airplane Inspector dress normal form messages (averaging 10 five-let Airplane Flight Chief Airplane Line Chief ter code groups of text) in a field radio net of two or more stations through interference. Supervises the inspection, maintenance, adjust Normally operates ground-to-air and point-to- ment, and minor repair of aircraft and aircraft point, changing frequencies as required. Tunes equipment. radio equipment accurately and quickly to any re Performs prescribed inspections of aircraft to quired frequency covered by coils and installed determine necessary servicing, adjustments, or parts equipment. Maintains calibration charts, revising replacements. Determines priority of jobs, and as transmitter tuning data as necessary. Must possess signs crews or individual specialists to tasks. Thor a thorough working knowledge of combined radio oughly checks maintenance work to insure proper telephone and radiotelegraph procedures and au condition of aircraft. Instructs subordinates in in thentication. Should be familiar with commonly terpretation of technical orders and in maintenance used low grade cryptographic equipment and sys methods. Analyses and trouble shoots unusual tems. Receives and transmits by light signals at a malfunctioning of aircraft. Coordinates all main minimum speed of 5 wpm. Maintains station logs tenance operations to expedite restoring aircraft to and message files. serviceable corldition. Supervises maintenance of Makes required periodic inspections of radio shop records, airplane and engine maintenance equipment. Keeps equipment clean, inspects an fonns, and requisition and care of tools, equipment, tenna systems, cords, plugs, telegraph key, and parts, and supplies. Warms up engines and taxis control switches and makes all necessary adjust airplanes, checks weight and balance computations ments. Tests all Army Air Forces radio equipment of aerial engineer-gunner. customarily installed, such as receivers, transmitter, Must have a thorough working knowledge of all power supply auxiliaries and accessories. Changes aircraft assembiies^systems, and Army Air Forces tubes, or tuning coils as necessary. technical orders. Considerable experience in inspec tion and maintenance aircraft required. RADIO OPERATOR-MECHANIC-GUNNER, AAF (757) RADIO MECHANIC, AAF (754) Operates airborne transmitting and receiving Performs necessary maintenance and repair work equipment; sends and receives messages using let on Army Air Forces airborne and ground radio ters and numerals of the International Morse Code, equipment. CW, ICW, tone or light signals in the same code. Makes required periodic inspections of radio Receives International Morse Code signals copy equipment. Keeps equipment clean, inspects an ing by hand-printing at a : minimum speed of 16 tenna systems, cords, plugs, telegraph key, and five-letter random code groups per minute without control switches and makes all necessary adjust error for a minimum period of 3 consecutive min ments. Tests and replaces parts for Army Air utes out of 5. Forces radio equipment customarily installed in Transmits International Morse Code signals, us ground stations or military aircraft, such as receiv ing hand key, at a minimum speed of 16 five-letter ers, transmitters, power supply auxiliaries, and ac random code groups per minute without error for cessories. a minimum period of 2 consecutive minutes out of 3. RADIO OPERATOR, AAF (756) Handles without error, a minimum of 15 plain- dress normal form messages (averaging 10 five- Operates ground transmitting and receiving letter code groups of text) in a field radio net of equipment. Sends and receives messages using let two or more stations through interference. ters and numerals of the International Morse Code, Normally operates air-ground, changing frequen CW, ICW, tone, or light signals in the same code. cies as required. Tunes radio equipment accurately 95 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL and quickly to any required frequency covered by code groups per'minute without error for a mini coils and installed equipment. Maintains calibra mum period of 2 consecutive minutes out of 3, or tion charts, revising transmitter tuning data as nec without more than five errors for a period of 10 essary. Must possess a thorough working knowledge minutes. of combined radiotelephone and radiotelegraph pro Handles without error a minimum of 18 plain- cedures and authentication. Should be familiar dress normal form messages (averaging 10 five- with commonly used low grade cryptographic letter random code groups of test) per hour in a equipment and systems. Receives and transmits by radio net under actual operating conditions. light signals at a minimum speed of 5 wpm. Main Tunes radio receivers to predetermined frequen tains station logs and message files. cies using standard frequency meter. Must be thor Performs necessary flight maintenance on air oughly familiar with the functions and operations borne radio equipment used throughout the Army of all controls on standard communications re Air Forces. Makej required periodic inspections of ceivers. radio equipment. Keeps equipment clean, inspects Intercepts signal broadcasts of weather condi antenna systems, cords, plugs, telegraph key, and tions and map signal transmissions. control switches and makes all necessary adjust Reads and transmits messages by light signals ments. Tests all Army Air Forces radio equipment at a minimum speed of eight words per minute. customarily installed on military aircraft, such as Must have a working knowledge of the operation receivers, transmitter, power supply auxiliaries, and adjustment of a semi-automatic telegraph key. and accessories, changing tubes, or tuning coils and Must possess thorough working knowledge of making minor repairs to equipment as necessary. combined radiotelephone and radiotelegraph pro Must be physically qualified for flight duty. cedures and authentication. Handles gun position as directed. Loads, aims, Maintains station logs and message files. and fires a machine gun and other ordnance as prescribed for airborne use against aerial and SCOUT (761) ground targets. Sets sights and corrects aim if Intelligence Observer Reconnaissance Agent required. Makes necessary adjustments to airplane Liaison Agent Reconnaissance NCO guns; corrects stoppages and makes minor repairs. Obtains information concerning strength, dispo Must be able to identify enemy airplanes. sition, and probable intentions of enemy forces, RADIO OPERATOR, CNS (759) route conditions, locations for bivouac, and terrain features in order to facilitate tactical employment Operates, inspects, and makes minor repairs to and maneuver of friendly troops, and prevent sur very high frequency radio equipment and to fixed prise attack. and mobile ground direction-finding equipment. Applies scouting and patrolling principles in Cleans, adjusts, installs, and replaces parts in searching terrain for sign of enemy activity, oper direction finding and very high frequency receiv ating from an observation post, on foot, or mounted. ers and transmitters and their power supplying Records observations and transmits by the best auxiliaries and accessories, using radio repairman's available means of communication. tools. Based on observations of activity and disposition RADIO OPERATOR, AACS (760) must be able to estimate strength of enemy detach ments and arrive at a logical conclusion as to their Operates radio transmitting and receiving equip probable intentions. Must be able to read maps and ment at an Airways Communications Station aerial photographs, make sketches, and use com (AACS) conducting a point-to-point and ground- pass and field glasses. Must be able to determine, air operations. Sends and receives messages by by observation and inspection, what load may be voice, or using letters and numerals of the Interna moved over bridges and roads on route of advance tional Morse Code (CW, ICW, or tone signals) or of friendly troops. Must be proficient in use of by light signals in the same code. weapons with which armed. Must possess excellent Receives CW, ICW, or tone signals '(copying by visual memory. Must be able to remain oriented in typewriter) at a minimum speed of 20 five-letter unfamiliar territory. random code groups per minute without error for At supervisory level, is responsible for control, a minimum period of 3 consecutive minutes out of coordination, and tactical employment of recon 5, or without more than five errors for a period of naissance crew. 10 minutes under actual operating conditions. Transmits CW, ICW, or tone signals using a hand SUGGESTED SUBSTITUTES key at a minimum speed of 20 five-letter random 604 Light Machine Gunner 96 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

605 Heavy Machine Gunner May drive truck. May direct beam manually with 607 Light Mortar Crewman hand crank if power fails. May check orientation 733 Reconnaissance Car Crewman of searchlight, control station, and detector by com 745 Rifleman paring simultaneous readings of azimuth and an 746 Automatic Rifleman gular elevation. 1607 Heavy Mortar Crewman Must be familiar with mechanical operation and tactical use of searchlight, power plant, and con AIRPLANE ENGINE REPAIRMAN (762) trol station, and with duties of other members of Performs highly skilled mechanical operations in the crew. connection with the complete overhaul of airplane power plants in a repair shop. • VISUAL SIGNALMAN (765) Disassembles, inspects, cleans, replaces worn and Signalman defective parts, adjusts mechanical action, and re Sends and receives messages by visual means assembles airplane engines. Performs difficult and such as semaphores, flags, panels, blinkers, flares, delicate repairs and adjustments of valve actuating signal projectors,, and Very pistols, keeping in con and timing mechanisms, valve seats, bearings, stant contact by phone or visual signals with other crankshafts, articulating rods, pistons, lubrication observation stations. system, propeller oil pressure system, accessory Performs minor maintenance on equipment used, and drive gears and pinions. such as polishing lenses, replacing worn-out bat Must be able to repair fuel injection devices teries, or tightening wire connections. where found. Must be able to detect hidden flaws May observe, signal, and keep a record of all in in metal parts by use of magnaflux devices. Must coming and outgoing ships from a shore station, be able to work from technical orders appropriate making observations through telescopes and record to model engine under repair. Should know over ing data concerning ship movements. haul of internal superchargers and rear sections. Must have exceptionally good vision. Must know all codes used in visual signal communication. SUGGESTED SUBSTITUTE 684 Airplane Power Plant Mechanic RADIO OPERATOR, HIGH SPEED, MANUAL (766) • SEARCHLIGHT CREWMAN (763) Installs and operates tactical field radio trans Control Station Operator mitting and receiving equipment. Sends and re Machine Gunner, Searchlight Crew ceives messages by International Morse Code (CW, Portable Power Generator Operator, Searchlight ICW, or tone) signals and by light signals. Nor Searchlight Operator mally operates in radio nets above the level of a As a member of a crew, performs one or more of division, such as corps or Army. the following duties in the operation of a search Receives CW, ICW, or tone signals (copying by light used for illumination of enemy targets in the typewriter) at a minimum speed of 25 five-letter air or at sea: random code groups per minute without error for a Sets up, operates, and maintains portable power minimum period of 3 consecutive minutes out of 5. generator. Starts motor, regulates speed of engine, In addition, receives, by hand printing, 13 five- checks operation gauges, services motor, and makes letter random code groups per minute. minor repairs such as changing fan belt or spark Transmits CW, ICW, or tone signals, using hand plugs. Operates and maintains searchlight, con key, at a minimum speed of 20 five-letter random necting light to power source, throwing switch to code groups per minute without error for a mini turn on light, checking dials for proper amperage, mum period of 2 consecutive minutes out of 3. examining carbons through porthole mechanism box Handles, without error, a minimum of 24 plain- to make certain they are the proper length, and dress normal form messages (averaging 10 five- cleaning and polishing mirror regularly. Sets up letter random code groups of text) per hour in a and operates control station. Hooka up station to field radio net or two or more stations through nat radar and to searchlight. Maintains electrical syn ural interference. chronization and precise direction between radar Receives and transmits messages by light signals detector and searchlight either by manipulating at a minimum speed of 5 words per minute. handwheels and zeroing dials at control station or Maintains records pertaining to the handling of by controlling searchlight by remote control from messages. control station while tracking target through binoc Performs first echelon maintenance by keeping ulars attached to control station. equipment clean, inspecting cords, plugs, antenna 97 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL mast, receiver, transmitter and calibration charts, officers, taking aerial observers on observation mis making minor repairs or adjustments, such as sions, or transporting small amounts of critical changing tubes, adjusting frequencies and adjusting materiel. Inspects and performs minor maintenance key, using simple hand tools. on airplane to which assigned. Must possess a working knowledge of combined radiotelephone and radiotelegraph and authentica SERVICE PILOT (773) tion procedures. May be required to encipher and Pilots airplanes on noncombat flights such as decipher messages using Converter M209. observation flights, tow target flights, and in ferry ing aircraft. (Type of airplane flown depends on SUGGESTED SUBSTITUTES rating.) 740 Radio Operator, Intermediate Speed 776 Radio Operator, Low Speed RADAR MECHANIC, GROUND EQUIPMENT (DESIGNATED SET) (775) CONTROL CENTER TECHNICIAN (768) In connection with mobile or fixed ground radar Supervises and instructs enlisted men in such equipment (designated set),- supervises and also techniques as plotting, intercept procedure, and engages in work such as assembling, operating dis control of aircraft by radio communication as neces assembling, tuning, aligning, maintaining, and re sary to effect the maintenance and repair of tele pairing equipment; supervises or assists in the phone installations and radio equipment for plot maintenance of performance logs, station records ting boards and ground-to-air communication. and the stocking of adequate spare parts. Must have executive ability and leadership to co Maintenance and repair work consist of making ordinate the efforts of enlisted personnel in an op periodic tests and inspection of equipment; diag erational section. nosing the cause and location of equipment trouble, and effecting appropriate repairs and re CHIEF STOREKEEPER, RAILWAY (769) placements, or improvising and substituting until Assists warehouse officer in supervising receipt, proper repairs or replacements can be made. Uses inspection, storage, and issue of supplies and equip small hand tools and also special tools, test devices, ment at a military railway installation. and instruments furnished with the equipment. Controls the assignment of space and the storage Must thoroughly understand the purpose and of supplies and equipment in accordance with floor function of all circuits used in the equipment and plans. Supervises selection, packing, crating, and its normal accessories. Must understand the pro marking of supplies, and expedites incoming and cedures for operating the equipment under the outgoing shipments. Supervises inventories and handicap of interference from similar equipment requisitions supplies and equipment necessary to or from enemy countermeasure activity and be maintain stock levels. Maintains files and records familiar with the usual means employed to min incident to warehouse operation. imize the effect of this interference. Must be familiar with warehouse methods in cluding use of warehouse mechanical equipment SUGGESTED SUBSTITUTE such as cranes and pulleys. Should have knowl 775 Radar Mechanic, Ground Equipment (Other edge of nomenclature of military railway supplies Designated Sets) and equipment. Must be able to supervise ware house foremen, warehousemen, and laborers. RADIO OPERATOR, LOW SPEED (776)

SUGGESTED SUBSTITUTES Installs and operates tactical field radio transmit ting and receiving equipment. Sends and receives 252 Foreman, Warehouse messages by International Morse Code (CW, ICW. AIRPLANE PILOT (770) dr tone) signals and by light signals. .Normally operates in radio nets below the level of a division. Pilots Army airplanes on all types of missions. Receives CW, ICW, or tone signals and prints May pilot any type of Army airplane, including pencil copy at minimum speed of 13 five-letter ran fighter bombardment, observation, or transport air dom code groups per minute without error for a planes, depending on rating. Completion of Army minimum period of 3 consecutive minutes out of 5. Air Forces flight training required. Transmits CW, ICW, or tone signals, using hand key, at a minimum speed of 13 five-letter random LIAISON PILOT (772) code groups per minute without error for a mini Pilots and maintains a small liaison airplane of mum period of 2 consecutive minutes out of 3. 175 horsepower or less for purposes of ferrying Handles, without error, a minimum of 12 plain- 98 12 Apr 45 TM 12-427 C 1 INTERCEPT CONTROL TECHNICIAN (768) Directs the maintenance and repair of telephone installations and radio equipment for plotting boards Supervises and instructs enlisted men in such tech- and ground-to-air communication, niques as, plotting, intercept procedure, and control Must have executive ability and leadership to co- of aircraft by radio communication as necessary to ordinate the efforts of enlisted personnel in an opera- effect the interception of enemy aircraft. tional section.

AGO 174A 98A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES dress normal form messages (averaging 10 five-let tion procedures. Must have a working knowledge of ter random code groups of text) per hour in a field the operation and adjustment of semi-automatic key radio net of two or more stations through natural interference. SUGGESTED SUBSTITUTES Receives and transmits messages by light signals 740 Radio Operator, Intermediate Speed at a minimum speed of 5 words per minute. 766 Radio Operator, High Speed, Manual Maintains records pertaining to the handling of 776 Radio Operator, Low Speed messages. Performs first echelon maintenance by keeping RADIO MECHANIC, AACS (778) equipment clean, inspecting cords, plugs, antenna Installs, maintains, and performs first and sec mast, receiver, transmitter, and calibration charts, ond echelon maintenance on all standard and spe making minor repairs or adj ustments, such as chang cial equipment used by Army Airways Communica ing tubes, adjusting frequencies, and adjusting key, tion System. using simple hand tools. Must possess a working knowledge of combined WEATHER EQUIPMENT TECHNICIAN (782) Radiotelephone and radiotelegraph and authentica Installs, operates, and maintains all types of tion procedures. May be required to encipher' and standard meteorological instruments and equipment decipher messages using Converter M209. and selected types of special meteorological instru ments and equipment. Performs third echelon main RADIO OPERATOR, HIGH SPEED, AUTO tenance, and improvises weather instruments and MATIC (777) equipment when necessary. Operates radio transmitting and receiving equip Must know the basic theory of meteorological ment in a fixed station. Sends and receives mes instruments, appurtenance wiring, and circuit de sages by perforated tape. International Morse Code signs. Must be well acquainted with all power (CW, ICW, or tone) signals and by light signals. supplies for the weather station. Must possess a Receives messages, by visually reading tape and knowledge of the mechanics of electronics of stand copying on a typewriter at a minimum speed of ard meteorological instruments and equipment. 30 five-letter random code groups per minute for a Must be proficient in the skills required of a minimum period of 15 minutes with not more than weather observer. one error per minute. Transmits by perforating tape at the same speed and accuracy, keeping the circuit WEATHER OBSERVER (784) in operation for a minimum period of 15 minutes. Meteorological Observer Theodolite Observer Receives CW, ICW, or tone signals (copying by Meteorological Plotter Weather Cryptographer typewriter) at a minimum speed of 25 five-letter Makes, records, and evaluates data on atmo random code groups per minute, without error, for spheric elements. Reads and records data from a minimum period of 3 consecutive minutes out standard weather instruments. Makes and records of 5. visual observations of clouds, ceiling, visibility, Transmits CW. ICW or tone signals, using hand and other weather elements and corrects and evalu key, at a minimum speed of 20 five-letter random ates observational data. Codes and decodes weather code groups per minute, without error, for a mini data. Plots data on weather maps, charts, and dia mum period of 2 consecutive minutes out of 3. grams. Performs first and second echelon mainte Handles by manual operation, without error, a nance of standard weather instruments and equip minimum of 24 plain-dress normal form messages ment. Operates weather teletypewriters in accord (averaging 10 five-letter random code groups of ance with circuit rules. text) per hour in a fixed station radio net of two Must be well acquainted with forms used in re or more stations through natural interference. cording observations and with routine weather sta Receives and transmits messages by light signals tion forms, requisitions, and records. Must pos at a minimum speed of 5 words per minute. sess a knowledge of elementary meteorology. Must Maintains records pertaining to the handling of be able to install simple weather instruments and messages. equipment, and must be familiar with the various Performs first echelon maintenance by inspecting weather codes and ciphers. and cleaning equipment, making minor adjustments such as adjusting siphon recorder pen and replac TOXIC GAS HANDLER (786) ing tubes. Chemical Equipment Operator Chemical Handler Must possess a working knowledge of combined Chief Toxic Gas Handler ,Toxic Gas Guard radiotelephone and radiotelegraph and authentica Stores and handles toxic gases and other chem- 99 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

ical warfare ammunition preliminary to their use cording observations and with routine weather sta in the field or analysis in a laboratory. tion forms, requisitions, and records. Must possess Observes and enforces safety regulations pertain a knowledge of elementary meteorology. Must be ing to proper handling of chemical warfare sup able to install simple weather instruments and plies. Removes contents of chemical shells, de equipment, and must be familiar with the various contaminating them for future use. Prepares and weather codes and ciphers. Must have a knowledge maintains various forms necessary to procure and of the mechanics and theory involved in teletype keep on hand adequate ammunition stock. Classifies writer equipment, and of the care and handling of and distributes ammunition. necessary tools and instruments. Must be familiar with effects of common toxic gases and first-aid treatments prescribed for each. AIR OPERATIONS SPECIALIST (791) Must be thoroughly familiar with regulations per Assists in the administration of an Army Air taining to handling and storage of toxic gases. Must Force operations office. be able to change valves on containers and cylin Supervises or assists in the preparation and main ders, and do pipe fitting as necessary. tenance 'of individual flight records and related When assigned to Army Air Forces, fills airplane reports; preparation of operations orders authoriz chemical spray tanks with various toxic gases', and ing flight missions, check lists for periodic instru arms tanks for detonation. Decontaminates spray ment tests, and aircraft damage and accident re tanks. Must be familiar with procedures for loading ports; and issue of flying clothing and personal spray tanks on various types of airplanes. Must be equipment to aircrew personnel and passengers. thoroughly familiar with operation of all equip Supervises or assists in the dispatching of airplane ment contained in the chemical service truck Ml. by preparing flight routes and logs of position re May be required to perform duty as chemical equip ports of outgoing* or incoming aircraft, obtaining ment operator, requiring qualification as operator clearances and information as to weather condi of Army motor .vehicle. tions, and communicating with other stations re garding flights from station and courses of transient WEATHER FORECASTER (787) airplanes. Makes or supervises the making of weather ob Must be familiar with current Army Air Forces servations and forecasts. Supervises the preparation and Civil Aeronautics Administration flying regu of weather studies, and maps, and prepares fore lations regarding air traffic. Ability to type de casts covering particular geographic regions using sirable. the latest modern methods of analysis. Prepares climatological studies indicating the probability of RADIO REPAIRMAN, SINGLE CHANNEL occurrence of specific weather phenomena such as TELETYPE (792) ceiling, precipitation, and visibility conditions. Installs, operates, and maintains radio receiver In Army Air Forces, instructs air crews in and terminal equipment of single channel voice weather observation and interpretation and in frequency radio teletype-systems. proper use of weather service and may assist in Tunes and adjusts receivers and discriminating briefing flight. devices, of voice frequency terminal equipment by manipulation of external'control devices. Tests cir WEATHER OBSERVER-TELETYPE TECH cuits, tubes, and other parts of equipment. Locates NICIAN (790) and diagnoses sources of malfunctioning. Makes Makes, records, and evaluates observations of adjustments, repairs (including improvisations), atmospheric elements. replacements and substitutions in such items of Reads and records data from standard weather equipment as antenna, dual diversity receivers, and instruments. Makes and records visual observations teletype relay equipment. of clouds, ceiling, visibility, and other weather ele Uses precision electrical and electronic instru ments. Corrects and evaluates observational data. ments and various types of small hand and light Codes and decodes weather data. Plots data on machine tools. weather maps, charts, arid diagrams. Must be able to transmit and receive in Interna Performs first and second echelon maintenance tional Morse Code at a minimum speed of 13 words of standard weather instruments and equipment. per minute (averaging five characters per word) Installs, adjusts, operates, inspects, repairs, and in clear text. Must be able to make any adjustment maintains weather teletype equipment and appurte or repair to receiving equipment, voice frequency nant wiring. terminal equipment, and accessories. Must under Must be well acquainted with forms used in re- stand fundamental principles of teletype transmis-

100 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES sion. Must be able to read accurately various meters, random code groups per minute for a minimum dials, and other indicating devices and know when period of 3 consecutive minutes out of 5, without tolerances are exceeded. error. Must have knowledge of international radio procedures. Must be familiar with principles of AMPHIBIAN TRUCK MECHANIC (DUKW) radio transmissions. Must have general knowledge (797) of various types of traffic which have intelligence Inspects, repairs, and performs third echelon value. maintenance on engine, hull, and chassis of amphib SUGGESTED SUBSTITUTES ian trucks. Repairs and replaces worn parts. Grinds valves, 738 Intercept Operator, G installs piston rings, checks and adjusts ignition 739 Intercept Operator, J system, and tunes and adjusts motor. Checks and CRYPTOGRAPHIC REPAIRMAN (DESIG cleans gasoline feed lines. Checks brakes and aligns NATED EQUIPMENT) (801) wheels. Makes repairs to bilge pumps, rudder, pro Performs repairs and adjustments on designated peller, and hull. cryptographic equipment and associated accessories. Must be a qualified amphibian truck driver. Diagnoses cause and locates source of trouble, TRANSMITTER ATTENDANT, FIXED testing circuits and equipment for faulty operation. STATION (798) Makes necessary inspections, adjustments, repairs (including improvisations), replacements or sub Under supervision assists in the installation of stitutions of such items as wiring, relays, keys, fixed station transmitting equipment such as an jacks, plugs, brushes, switches, rectifiers, gears, tenna, transmitters, and. power units. pens, and ratchets. Tunes and adjusts fixed radio station transmitter Uses electrician's small hand tools and test in equipment, including the changing of crystals and struments. adjustment of master oscillator and amplifiers, to Must have crytographic clearance. insure that the power output and frequency are Must have thorough knowledge of the theory of within authorized tolerances. Checks and inspects d-c and a-c power. Must be able to read and un power equipment. Maintains transmitter log and derstand adjustment drawings and circuit drawings. other pertinent records. Must have appropriate knowledge of other sub Uses frequency meter and electrician's small jects and devices associated with the particular hand tools. designated cryptographic equipment. Must be able to read accurately various meters, dials, and other indicating devices and know when ARTILLERY MECHANIC, MINOR MAINTE tolerances are exceeded. Must understand the op NANCE (802) eration of CW, ICW, and AM radio transmitters and Inspects, maintains, and makes minor repairs on receivers. all types of artillery weapons and auxiliary equip INTERCEPT OPERATOR, FIXED STATION ment excluding antiaircraft automatic weapons and guns. (799) - Makes frequent inspections of artillery weapons For intelligence purposes, identifies and inter of using organization to ascertain looseness of cepts enemy nonmilitary radio signals transmitted bolts, sighting and firing mechanisms, and gun car in high speed International Morse Code. riage. Makes such minor repairs and adjustments Operates and maintains radio receiving and auxil to artillery pieces as drawing and replenishing of iary equipment such as ink and sound recorders, recoil fluids, filing and removing of burrs, replac transcribers, and frequency meters. Tunes in radio ing of breech and firing mechanisms, replacing of receiver on an assigned frequency or by searching wheel bearing and brakes, adjusting backlash in over .a band of frequencies. Records intercepted traversing and elevating gears, and removing, traffic direct by typewriter or by transcribing data cleaning, and replacing of equilibrator. from sound and siphon ink recordings. May make minor repairs and adjustments on Performs first echelon maintenance by inspect .small-arms weapons. ing, dusting and oiling.equipment; making simple Uses such tools and equipment as light and heavy repairs or adjustments such as changing tubes, straight wrenches, screw drivers, socket wrenches, adjusting frequencies and siphon recorder pen. hammers, lifting jacks, center punches, and drills. Uses simple hand tools. Must be thoroughly familiar with construction Must be able to receive International Morse Code and operation of artillery pieces, including nor-ien- and copy by typewriter at a speed of 30 five-letter clature and cataloging of replacement parts. 101 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

BUGLER (803) analytic solution of enemy messages. Plays bugle to sound regulation calls and com Prepares or assists in preparing, compiling, and mands such as warning, formation, alarm, and revising code books, cipher systems, and cipher service calls for the information and guidance of keys for use in safeguarding military communi cations. military personnel. Performs a variety of such additional duties as May assist in cryptanalysis. Must have crypto graphic clearance. clerk, messenger^ and orderly. Must have mathematical training and knowledge May also play bugle as member of a drum and of foreign languages. bugle corps. Should have a good ear for music. Must be able SUGGESTED SUBSTITUTES to remember various regulation calls such as rev 805 Cryptographic Technician eille, taps, assembly, charge, call to arms, and re 808 Cryptanalysis Technician treat without reference to sheet music. CRYPTANALYSIS TECHNICIAN (808) CAMOUFLAGE TECHNICIAN (804) Decodes and deciphers enemy messages and cryp Camoufleur tograms without the aid of the device or key used Supervises and instructs in the operations, in in preparing them. volved in camouflaging the appearances, outlines, Using deductive reasoning and employing knowl and shadows of objects and regularly shaped areas edge of the various cryptographic codes, analyzes to avoid enemy detection either by eye or camera. coded messages and determines key to code. Directs the concealment of gun emplacements, May supervise others in cryptanalysis. Must have observation posts, and munition dumps by erection cryptographic clearance. of garnished nets and natural foliage. Supervises Must have training in cryptanalysis and be painting of guns, gun carts, trucks, and other mili familiar with all types of cryptographic systems tary equipment so that they will merge into natu and their variations in military communications. ral surroundings. Studies actual photographs, and Must possess initiative, patience, and marked de uses them as a guide in directing the change in ap ductive ability. Should have some mathematical pearance of airport runways and other areas by training and be familiar with at least one foreign painting them to easily blend with surrounding ter language. rain and thereby deceive enemy aerial photogra phers. Supervises construction of false additions to SUGGESTED SUBSTITUTES buildings to alter their appearance, and screens 805 Cryptographic Technician roads to conceal movement of troops. Instructs cam- 807 Cryptographic Code Compiler oufleurs, carpenters, painters, riggers, and canvas workers in the camouflage techniques. DECONTAMINATING EQUIPMENT Equipment used includes water color paints, OPERATOR (809) oznaburg cotton cloth, and camouflage nets. Uses a portable spray, large power-driven de Must possess a high degree of color discrimina contaminating apparatus, or other decontaminating tion and be able to blend paints to produce natural equipment to neutralize or remove chemical agents effects. Must understand effect of changing weather from areas and equipment which have been sub conditions on camouflage. ject to chemical attack. Wears gas mask and pro CRYPTOGRAPHIC TECHNICIAN (805) tective clothing while working. Must know mixtures and solutions of the several Enciphers and deciphers or encodes and decodes agents used in decontamination work and be fa classified messages, using all types of cryptographic miliar with all safety regulations applicable to systems and equipment employed by the Army. chemical warfare materials, and must be qualified Handles secret communications, and maintains •to-jnake field tests for completeness of:decontamina cryptographic files. Must have cryptographic tion. Must be qualified to operate Army motor clearance. vehicle. Has a working knowledge of cryptographic se curity. Must be capable of typing at a minimum SUGGESTED SUBSTITUTE of 25 words per minute. 786 Toxic Gas Handler CRYPTOGRAPHIC CODE COMPILER (807) HEAVY WEAPONS NONCOMMISSIONED Cryptographer OFFICER (812) Code Compiler Supervises activities of a heavy weapons unit, Gathers and prepares data to be used in the crypt- comprising heavy (.30 and J50 caliber) machine 1O2 12 Apr 45 TM 12-427 C 1

HEAVY WEAPONS CREWMAN (812) Must be familiar with firing problems in difficult Loads, aims and fires infantry heavy weapons such terrain, range computation from firing table, map as .30 or .50 caliber machine guns and 81-mm or reading and use of compass. Must be capable of 4.2-inch mortars to provide fire power in support of rapidly and accurately estimating range and angle of other tactical units in attack and defense. fire. Selects positions for and sets up weapons, taking advantage of cover and concealment. Estimates SUGGESTED SUBSTITUTES ranges and determines firing data. 605 Heavy Machine 1812 Light Weapons At supervisory level, is responsible for control and Gunner NCO coordination of enlisted personnel and for tactical 1607 Heavy Mortar deployment of units. Crewman

JO1T4A 102A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES guns and heavy (81-mm and 4.2-inch) mortars to Ordnance Supply Technician (AAF) provide fire power in support of other tactical Supervises, directs, and assists in the receipt, in units in attack and defense. spection, requisition, storage, and issue of Ordnance Selects positions for weapons, taking advantage materiel such as small arms, artillery weapons, and of cover and concealment. Furnishes firing data automobile and armament parts and accessories. such as range and deflection. Deploys unit as the Supervises loading, unloading, and storage ol tactical situation demands. supplies and equipment. Supervises and assists in Must be familiar with firing problems in diffi taking of inventories and inspection of Ordnance cult terrain. Must be capable of rapidly and- accu property. Supervises packing and marking and is rately estimating range and angle of fire. Must be sues shipments of Ordnance materiel. Examines familiar with use of compass, map reading,, and arms and other materiel for defects. Determines range computation from firing table. validity of requests for replacement parts and con SUGGESTED SUBSTITUTES trols issue of same. Supervises editing and filling of requisitions, maintenance of stock and individual 605 Heavy Machine Gunner record books and cards, and directs preparation 1607 Heavy Mortar Crewman of Ordnance reports and correspondence. 1812 Light Weapons NCO Must have knowledge of Army regulations gov OPERATIONS NONCOMMISSIONED erning accountability, responsibility, and supply OFFICER (814) procedure. Must have knowledge of nomenclature Assists operations officer in maintaining current of Ordnance replacement parts including inter- milkary intelligence as to location and strength changeability of parts. of friendly and enemy troop units, preparing plans SUGGESTED SUBSTITUTES for tactical employment and disposition of troops in attacks against enemy forces and the strategic 348 Parts Clerk, Automotive withdrawal of troops in retrograde movements. 821 Quartermaster Supply Technician Maintains ground or aerial photo map of combat 848 Parts Clerk, Armament area on which is currently posted all military in PONTONEER (817) formation received from intelligence units pertain ing to location, strength, and disposition of friendly Motor Boat Operator and enemy units, using colored pins, conventional Works as member of group engaged in 'assem Army signs, and other markers. Maintains diary bling, disassembling, and maintaining ponton or log of military activities and other incidents bridges used to facilitate passage of personnel and in which unit is involved. Assists in preparation equipment across streams. of tactical plans concerning attacks against enemy Unloads component parts of ponton Bridges from forces and withdrawal of troops. Supervises typing trucks and trailers and places them in order in and clerical work required in preparation of com which they will be assembled. Assembles and lashes bat orders. Prepares map overlays or sketches is component parts of bridge. Smooths and levels sued with combat orders. Routes combat orders and approach to bridge abutment, using picks and map overlays to units concerned. shovels, and digs trench in which abutment sill is Equipment includes drafting boards, drafting to be embedded. Installs abutment span and trestle pens, overlay paper, stereoscopes used in reading spans which form approach to first ponton and then and interpreting aerial photos, and protractors used moves successive pontons into position. Anchors to locate points on maps. pontons, using cable and heavy weights. Fastens Must know general organization of arm or serv flooring strips on pontons and aligns assembled ice to which assigned and be familiar with its bridge by adjusting anchor cables. Bails water from tactical employment and technique. Must be able pontons by means of pump. Replaces broken or to read maps accurately. Must be able to use stereo damaged bridge flooring. Dismantles bridge and scopes and interpret aerial photos. Must be able stacks parts on trucks and trailers. to prepare map overlays using drafting table, over May operate outboard motor. lay paper, and drafting pens. Must be above average in physical strength. SUGGESTED SUBSTITUTE SUGGESTED SUBSTITUTES 631 Intelligence Noncommissioned Officer 050 Carpenter, General 729 Pioneer ORDNANCE SUPPLY NCO (815J] Chief Parts Clerk COMMISSARY STEWARD (819) Ordnance Noncommissioned Officer Chief Steward 103 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

Supervises the personnel and operations of a shipped, and is responsible for reporting discrep commissary sales store, warehouse, and office; or ancies noted in quantity, quality, or physical con of the sales, administrative, and stock trailers in a dition of supplies. Supervises checking of property mobile unit in issuing subsistence to units and sell submitted for salvage. ing various commodities to individuals. Must have general knowledge of procurement Supervises the preparation of requisitions, and regulations, warehousing procedures, and regula checks receiving reports and deliveries for accu tions governing, property accountability and re racy. Prepares reports and monthly financial state sponsibility. Must be familiar with the nomen ments of commissary receipts and sales. Makes clature and classification of Quartermaster supplies. monthly inventory of stock on hand. Posts monthly UTILITIES NCO (822) balance and general control account ledger. In structs personnel in prescribed methods of com Utilities Technician (AAF) missary or sales operations. Supervises enlisted specialists in maintenance of May purchase certain commodities when author utilities, installations, or equipment such as light, ized. May interview salesmen. heat, power, and water supply, sewage disposal and Must know Army regulations governing a sales sanitary systems, roads, buildings, and grounds at a commissary. post, camp, station, or depot. Inspects roads, areas, buildings, and all utility SUGGESTED SUBSTITUTES equipment and installations, reporting all needed 371 Purchasing Agent repairs to utilities officer and foreman for type 820 Subsistence Noncommissioned Officer of work concerned. Checks to see that workers are promptly dispatched and that repair work is prop SUBSISTENCE NONCOMMISSIONED OFFICER erly performed. Receives requests for emergency (820) repairs, such as plumbing, stoppages, and faulty Directs a subsistence supply section in drawing electric wiring, and sees that the work is done. field rations in bulk and in making equitable dis SUGGESTED SUBSTITUTE tribution to the various companies or similar units 059 Foreman, Construction in his organization. Checks work of section leaders who handle meats MESS SERGEANT (824) and produce and the work of dry-issue clerks. Draws Supervises and controls the activities of mess dry rations from commissary or supply dump and coun^ number 'of cases of each item. Supervises personnel in garrison or field kitchen installations. Prepares menus from a master menu. Supervises a detail in loading cases on trucks and in dividing the preparation of food in accordance with estab rations proportionately before delivering them to lished sanitary and dietetic principles. Makes au units. thorized requisitions and purchases of supplies. May supervise delivery of rations to unit mess Inspects delivered supplies for condition and proper sergeants. quantity and inspects stored food for spoilage. SUGGESTED SUBSTITUTES Keeps record of supplies, equipment, and mess 371 Purchasing Agent account. 819 Commissary Steward Must have sufficient knowledge of dietetics to 824 Mess Sergeant maintain a balanced diet Must be able to direct and control the preparation of palatable meals QUARTERMASTER SUPPLY TECHNICIAN under unfavorable field conditions. Must be fa (821) miliar with Army methods of accounting and in ventory as they apply to food. Supply Noncommissioned Officer Assists in one or more functions of procurement- SUGGESTED SUBSTITUTE receipt, storage, issue and salvage of Quartermaster 060 Cook supplies. Supervises supply personnel in estimating stock MEDICAL SUPPLY NCO (825) requirements. Prepares, consolidates, and edits req Medical Supply Technician (AAF) uisitions and purchase orders. Initiates shipping Supervises the requisitioning,~storing, and issuing tickets, receiving reports, and reports of survey of medical supplies and equipment. and exchange orders. Supervises warehouse person Supervises the maintenance of stock record cards, nel in connection with receipt, storage, and issue preparation of requisitions, issue of stock and equip of supplies. Checks supplies received, issued, or ment, handling of medical supply correspondence, 104 12 Apr 45 TM IS-4B7' C 1 SUPPLY NONCOMMISSIONED OFFICER (821) May supervise personnel in connection with re ceipt, storage, and issue of supplies at a supply Supply Technician > dump. May inspect items turned in for replace Supervises and assists subordinates in all activi ment and salvage or repair. May procure sub ties connected with the requisition, receipt, trans sistence items from the Quartermaster or from local portation, storage and issue of individual and sources. organizational supplies and equipment. Must be familiar with Army regulations govern ing accountability, responsibility, and supply pro Estimates stock requirements and prepares and cedure including action to be taken in the event edits requisitions and purchase orders. Supervises of loss or damage to government property. Must loading, unloading and storage of organizational be familiar with Tables of Organization and Equip supplies and equipment. Checks supplies received, ment, Tables of Basic Allowances and Standard issued or shipped and is responsible for the prep Nomenclature Lists applicable to his unit. aration of Over, Short, and Damaged Reports. For assignment to QM supply depot or similar Issues clothing, arms, ammunition, fuel, personal unit, must have a working knowledge of and be equipment, and general unit supplies. Prepares able to supervise procurement, receipt, warehous shipping tickets, memorandum receipts, statement ing, issue and salvage of Quartermaster supplies. of charges, receiving reports, exchange orders, and Must be familiar with nomenclature and classifica reports of survey. Maintains record of all sup tion of Quartermaster supplies. plies and equipment held in stock and by unit SUGGESTED SUBSTITUTES personnel. Takes inventories and makes physical 581 Signal Supply 815 Ordnance Supply inspections. Supervises maintenance and repair of Technician NCO unit property and keeps equipment in readiness for 583 Engineer Supply 825 Medical Supply field service. Supervises the collection and dis Technician NCO tribution of laundry. 835 Supply Clerk

DO 174A 104A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES and preparation of memorandum and consolidated other crews. Locates searchlight batteries to form receipts. Takes physical inventory of stock on hand a searchlight pattern. Picks balloon sites to cover and prepares status reports. entire defense area, taking into account prevailing Must be familiar with medical terminology, sup winds. Using alidade and plane table, makes surveys plies, and equipment. Must be familiar with man for .preparation of topographic maps of small areas. ner of storage of medical supplies. Must be familiar With drafting set, prepares overlays showing routes with Army regulations governing property account of march, position of weapons, and location of ability and responsibility.. vital installations. Prepares and maintains files of special maps, charts, and sketches. Performs such SUGGESTED SUBSTITUTES miscellaneous drafting as may be required. 657 Medical Aidman May lay out plans for minor construction, in 821 Quartermaster Supply Technician cluding drainage systems, grading, and roads. May 835 Supply Clerk maintain situation map and journal. ARMY AIR FORCES SUPPLY TECHNICIAN SUGGESTED SUBSTITUTES (826) 671 Master Gunner, Antiaircraft (Gun) Requisitions, stores, and issues hand tools, mo 814 Operations Noncommissioned Officer bile repair equipment, and a variety of small parts ARTILLERY MECHANIC, ANTIAIRCRAFT (AU used in servicing or repair of airplanes and aircraft TOMATIC WEAPONS equipment. Receives verbal requests for tools, equipment, MINOR MAINTENANCE (833) and parts from mechanics and issues them on memo Performs various duties connected with minor randum receipt. Maintains stock levels of hand maintenance of gun and carriage of a 37- or 40-mm tools, mobile repair equipment, nuts and bolts, antiaircraft gun and auxiliary equipment. and miscellaneous aircraft parts and replacement Periodically disassembles major parts of gun in items such as hydraulic units, batteries, electric cluding recoil assembly, breech block mechanism, cables, and engine parts. Maintains proper stock barrel assembly, and automatic loader, inspecting levels and keeps records of articles on requisition, and cleaning working parts. Replaces such defective stock on hand, tools issued, and storage credits. or worn parts as set screws, bolts, cotter keys, flash Uses standard nomenclature lists and technical or hiders, tube collar sleeves, and automatic feed ders to identify maintenance equipment, tools, and plungers. On carriage, adjusts such vital parts as other equipment. Prepares routine supply reports. equilabrators, axle balancing mechanism, and elec May supervise other technical supply clerks. tric brakes. Cleans and lubricates or packs bearing Must be familiar with aircraft maintenance op surfaces and revolving parts, including hubs, wheel erations and have a working knowledge of the bearing, jack handles, ball bearings, trunnion bear nomenclature of parts, equipment, and tools used ings, and elevating and traversing gears. in various phases of aircraft servicing and repair Performs other authorized first and second eche operations. lon repair or maintenance -work. Adds recoil fluid and gas as needed. Instructs operating crews in SUGGESTED SUBSTITUTES care and maintenance of guns. 348 Parts Cierk, Automotive Uses a wide variety of tools, including monkey 848 Parts Clerk, Armament wrenches, screw drivers, pliers, socket wrenches, end wrenches, punches, mechanic's and bronze ham MASTER GUNNER, ANTIAIRCRAFT (832) mers, chisels, and automatic lokder tools. Master Gunner, Automotive Weapons SUGGESTED SUBSTITUTES Master Gunner, Barrage Balloon 802 Artillery Mechanic, Minor Maintenance Master Gunner, Searchlight 834 Artillery Mechanic, Antiaircraft (Gun) Minor Performs a variety of duties in connection with Maintenance operations and survey functions of antiaircraft au tomatic weapons, searchlight, or barrage balloon ARTILLERY MECHANIC, ANTIAIRCRAFT units. (GUN) MINOR MAINTENANCE (834) At direction of reconnaissance officer, surveys Performs various duties connected with minor area selected for location of command posts, battery maintenance of gun and carriage of a 90-mm, 105- areas, or balloon sites. Determines location of guns mm, 120-mm and 3-inch antiaircraft gun and auxil to cover entire area, eliminating any dead space and iary equipment. determining safe field of fire to prevent danger to Periodically disassembles, inspects, and cleans 105 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL major parts of gun including breech mechanism, SOUND RECORDER, FIELD ARTILLERY (836) firing mechanism, firing pin assembly, and fuze Operates and maintains sound recording oscillo setter. Drains and refills recoil cylinders as re graph equipment used in field artillery sound quired. Replaces defective or worn-out parts such ranging. as extractors, set screws, and cotter keys. Cleans Connects oscillograph by wire to microphone and and lubricates bearing surfaces and revolving parts, telegraph installations at forward observation posts. including hubs, wheel bearings, jack handles, ball Checks functioning of microphones by observing bearings, trunnion bearings, and elevating and tra recording dials on oscillograph. Establishes tele versing gears. Performs other authorized first and phone communications with sound ranging ob second echelon repair or maintenance work. Super servers, relaying necessary instructions. Accom vises and instructs operating crews in proper care plishes sound recording by means of coordinated and maintenance of guns. action of a special relay unit and oscillograph Must be thoroughly familiar with mechanical camera action. Prepares or directs preparation of functioning of antiaircraft guns and be capable chemical solution to wash sound film which is de of rapidly servicing guns under field conditions. veloped automatically. Supplies film to readers who Must be able to use a wide variety of tools, in determine time intervals. Maintains set by repairing cluding monkey wrenches, screw drivers, pliers, and replacing parts, using electrician's hand tools. socket wrenches, end wrenches, punches, mechanic's Must have knowledge of electricity including and bronze hammers, and chisels. relays, electrical circuits, filters, audio frequency amplification, electrical damping, and thermionic SUGGESTED SUBSTITUTES tubes. 802 Artillery Mechanic, Minor Maintenance 833 Artillery Mechanic, Antiaircraft (Automatic SUGGESTED SUBSTITUTES Weapons) Minor Maintenance 078 Electrician 571 Electrician, Harbor Defense SUPPLY CLERK (835) Receiving and Shipping Stock Clerk AMPHIBIAN TRACK VEHICLE MECHANIC Checker Stock Control Clerk (837) Shipping Clerk Stock Record Clerk Repairs and maintains amphibian vehicles by Performs various clerical and stock-handling du cleaning, adjusting, tearing down,- repairing, re ties in connection with receipt, storage, issue, and placing parts,- and reassembling motors, clutches, shipping of general supplies and equipment in an and differential, and cleans and adjusts track. Army warehouse or unit supply section. Checks incoming and outgoing supplies against Cleans and adjusts spark plugs, carburetor, fuel items listed on requisitions, invoices, and bills of pump, and fuel'lines. Grinds and adjusts valves, lading, counting, grading, or weighing articles in and replaces pistons, rings, and rods. Adjusts volved. Stores materials in storage bins, racks, and clutch and replaces clutch plate. Replaces gear compartments, arranging items in such manner as units in transmission and differential. Cleans, tight will facilitate taking -of inventories and provide ens, and adjusts track. Lubricates all moving parts. protection against dampness and deterioration. Re Uses auto mechanic's tools. ceives and fills requisitions for supplies and equip Must be familiar with the operation of the ve ment by directly issuing articles to authorized per hicle on land and water. sonnel or by preparing items for shipment. SUGGESTED SUBSTITUTES Maintains stock records pertaining to such items 905 Mechanic, Engine,1 Wheel Vehicle (Gasoline) as amount, kind, and value of supplies and equip 908 Mechanic, Chassis, Track Vehicle ment received, issued, or expended and balance 965 Mechanic, Automotive, Wheel Vehicle (Third on hand. Antixapates and prevents stock:depletions Echelon) by estimating required amounts for future use. Should be familiar with Army regulations gov SEAMAN, LANDING CRAFT (838) erning accountability, responsibility, and supply procedures, including maintenance of stock and Boatswain Landing Craft stock record accounts. Should be familiar, with Coxswain, Landing Craft principles of military bookkeeping. Proficiency in Landing Craft NCO use of typewriter desirable. Performs a variety of duties aboard a landing craft used in amphibious operations in a combat SUGGESTED SUBSTITUTES zone. 055 Clerk, General 405 Clerk-Typist Handles lines and ropes when docking or anchor- 196 5 Feb 46 TM 12-427 C3 ing craft. Cleans and paints hull, including scrap ferential, turret drive motor, and one cylinder mo ing and sanding old paint. Operates winch to lower tor. Tightens power belts and services power charg ramp for disembarking troops or for unloading ers and charging motor. Using allenhead wrenches, materials and equipment. thin blade screw drivers, wire cutters, machinist's Using semaphore signals, relays messages to other and long nose pliers, punches, and hammers, re craft and shore stations. Signals to coxswain when pairs or improvises parts to replace defective equip approaching sand bars, reefs, barriers, and other ment. Tests and tightens electrical connections op underwater obstructions. erating turret and selanoids firing the machine guns. Must know simple navigation, splicing, knots, rig Cleans and lubricates or packs bearing surfaces and ging, and semaphore signalling. revolving parts, including the azimuth and vertical At supervisory level, is responsible for steering gear drive boxes, differential, and base ring. and maneuvering craft, using charts and compass. SUGGESTED SUBSTITUTES Supervises storing of cargo on craft and is respon sible for coordination and control of work of crew 802 Artillery Mechanic, Minor Maintenance members. 833 Artillery Mechanic, Antiaircraft (Automatic Weapons) Minor Maintenance SUGGESTED SUBSTITUTE 065 Seaman RADAR OPERATOR, AN/TPQ (DESIGNATED MODEL) (842) MARINE ENGINEMAN (839) Operates a designated model of radar AN/TPQ Operates and maintains gas or Diesel engine and or similar equipment. Operates equipment by auxiliary equipment used in propelling water craft. manipulation of tuning or operating controls; ob Inspects motor before starting for amount of gas serves readings on dials and indicators; furnishes or oil in fuel tank, oil in crankcase and gear box. transmission data to operating teams on such mat Checks fan belt, ignition wiring, and engine mounts. ters as frequency, pulse recurrence frequency and Starts engine and observes ammeter, oil gauge, rpm bearing; assists in installation of receiver antenna, indicator, and temperature during operation. Reg and associated antenna equipment; maintains log ulates speed of engine and engages clutch to start and other records; assists in the plotting of opera or reverse direction of craft upon signal from cox tional data. swain. Inspects engine during or after operation. Uses small hand tools in performing maintenance Tightens hose connections, motor mounts, and en and repair work which consists of inspecting, dust gine head. Cleans and adjusts spark plugs, car ing, and oiling equipment; making simple repairs, buretor, injectors, and lubricates equipment. Tears adjustments, and replacements of parts such as fuses, •down, cleans, and reassembles reverse and reduc filters, batteries, pilot lights, tubes, and antennas. tion gears. Replaces packing in pump and keeps Must be thoroughly familiar with the tuning of engine and equipment clean. radar receivers, associated analyzers, and panoramic Uses wrenches, pliers, screw drivers, hammer, and equipment. Must be able to read accurately various gauges. meters, dials, and indicators from which search data Must have a thorough knowledge of the operation are obained. Must be able to read maps, barometric of the gasoline and Diesel engine. Must be familiar altimeters, and surveying compasses. with the duties of coxswain and seaman. RADAR OPERATOR, AN/TPT (DESIGNATED SUGGESTED SUBSTITUTES MODEL) (843) 014 Automotive Mechanic (Second Echelon) Operates a designated model of radar AN/TPT 081 Engineman, Operating or similar transmitting and receiving equipment. ARTILLERY MECHANIC, ANTIAIRCRAFT Operates equipment by manipulating tuning of op (SELF-PROPELLED) MINOR MAINTE erating controls in coordination with signals or NANCE (841) instructions received from a control station. Assists in the installation .of equipment, antenna, power Performs various duties connected with minor units, transmitters, receivers, and telephone lines. maintenance of turret and machine guns of self- Performs minor repairs and adjustments. propelled antiaircraft equipment. Uses small hand tools in performing maintenance Periodically disassembles, inspects, and cleans and repair work which consists of inspecting, dust major units of turret including control units, dif- ing, and oiling equipment; making simple repairs,

AGO 3006A 1O7 TM 12-427 5 Feb 46 C3 adjustments, and replacements of parts such as GUN CREWMAN, HEAVY ARTILLERY (MUL fuses, filters, pilot lights, batteries, and tubes. TIPLE LOAD) (845) Must be familiar with the tuning of radio trans Ammunition Handler Gunner mitters and receivers and be able to interpret accu Ammunition Non-com- Cannoneer rately the readings of various meters and dials. missioned Officer As crew member of a 240-mm howitzer or 8-inch GUN CREWMAN, LIGHT ARTILLERY (844) gun. or heavier caliber artillery gun or howitzer using separate loading ammunition, assists in mov Ammunition Handler Gunner ing, emplacing, firing, and withdrawing the piece in Ammunition Noncom Infantry Cannon Crew combat operations. missioned Officer man Performs one or more of the following operations Cannoneer during firing mission; sets horizontal angle from As a member of a 75-mm howitzer or gun or 105- established position by means of panoramic sight mm howitzer artillery crew using fixed or semifixed and manipulates traversing hand wheel to lay gun ammunition, assists in moving, emplacing, firing, on target. Makes additional changes in deflection displacing, and withdrawing the piece in combat as directed. Sets announced elevation on elevation ' quadrant. Opens and closes breech. Inspects and operations. cleans projectile to prepare for loading and attaches Performs one or more of the following operations fuze, using fuze wrench. Sets fuze for quick, delay during the firing mission: sets horizontal angle from or time action, using fuze setter. Places projectile established position by means of a panoramic sight, on loading barrow, using rammer to seat projectile and manipulates traversing hand wheel to lay gun in breech recess. Removes powder charge from con on target. Makes additional changes in angular de tainer and inserts it in breech recess. Inserts primer flection as directed. Sets target range on range in firing-mechanism block. Fires piece by pulling drum and target angle of site on angle-of-site scale. hand lanyard. After misfire removes unfired round, Carries, inspects, cleans, and passes ammunition. using rammer and rammer staff. Inspects bore and Attaches fuze to projectile, using fuze wrench. Sets swabs with water. Cleans breech and firing mech fuze for quick, delay or time action, using fuze set anism block. Assists in such maintenance opera ter. Opens and closes breech and loads piece by tions as cleaning, oiling, and rustproofing of vital hand, pushing round into breech until firmly seated. parts of gun. Fires piece by pulling hand lanyard. Using rammer At supervisory level, is responsible for control co and rammer staff removes unfired rounds or car ordination, and tactical employment of heavy artil lery pieces and crew members. tridge cases which cannot be ejected by extractor. Inspects bore and swabs with water. Cleans breech. SUGGESTED SUBSTITUTES When semifixed ammunition is used, removes pro 844 Gun Crewman, 873 Gun Crewman, jectile from cartridge case, withdraws excess powder Light Artillery Heavy Artil increments and assists in such maintenance opera 864 Gun Crewman, lery (Single tion as cleaning, oiling, and rustproofing vital parts Medium Artil Load) of gun. lery . 1531 Gun Crewman, At supervisory level, is responsible for control, Pack Artillery coordination, and tactical employment of light artil lery pieces and crew members. PORTABLE POWER GENERATOR OPERATOR (846) SUGGESTED SUBSTITUTES Operates a mobile power generator which pro 845 G u n, Crewman, 873 Gun Crewman, duces electric power for the operation of various Heavy Artil Heavy Artil machines or for the lighting of an installation. lery (Multiple lery (Single Services, lubricates, and makes minor repairs Load) Load) to the engine, using screw drivers, wrenches, and 864 Gun Crewman, 1531 Gun Crewman, grease guns. Starts engine and regulates engine Medium Artil Pack Artil speed by controlling supply of gasoline. Reads volt lery lery meter and regulates voltage output of generator

I OH AGO 3006A 5 Feb 46 TM 12-427 C3 by a hand-controlled rheostat. Connects generator SCR-518, SCR-718, and similar devices. Tests, by cables to equipment or machinery for which it cleans, and adjusts the various types of apparatus supplies power. Keeps an operations log. covered above. May drive light or heavy truck. RADAR MECHANIC, SEA SEARCH (854) SUGGESTED SUBSTITUTES 077 Powerhouse Engineer Performs second echelon maintenance and repair 081 Engineman, Operating on radio sets and equipment SCR-717, SCR-729, SCR-595/695 and similar devices. Tests, cleans, PROSTHETIC DENTAL SUPPLY CLERK (847) and adjusts the various types of apparatus covered above. Performs various clerical and stock-handling du ties in connection with receipt, storage, issue, and DENTAL ASSISTANT (855) stock listing of prosthetic dental supplies. Maintains stock records of such materials as arti Assists dental officer in rendering routine dental ficial teeth, facings, moldings, and backings. care and performs various nonprofessional duties. Must be able to substitute any of these items Prepares patients for dental treatment. Renders when mold and shade requisitioned are not in stock. dental first-aid. Sterilizes and prepares dental in Must have general knowledge of supply procedures. struments. Assists in operating dental X-ray equip ment and processing X-ray film. Assists dental of RADAR MECHANIC, TROOP CARRIER (849) ficer in the preparation and administration of hypodermic medications and local anesthetic agents. Performs first and second echelon maintenance Prepares impression and filling materials. Main and work on radio sets and equipment SCR-595/ tains supplies of dental drugs and equipment. Keeps 695, AN/APN-5, AN/APN-1, AN/TPN-1, RC-24, dental records. BABS and similar devices. Tests, cleans, and ad May scale and polish teeth or assist dentist or justs the various types of apparatus covered above. dental hygienist in the performance of these duties. Must have knowledge of the structure and physi RADAR MECHANIC, NIGHT FIGHTER (850) ology of teeth and general knowledge of common diseases of the mouth and manner of treatment by Performs second echelon maintenance and repair dentists. Must be familiar with methods of dental on radio sets SCR-595/695, SCR-520/720, SCR- first-aid. Must have knowledge of instruments used 540, SCR-729 and similar devices. Tests, cleans and techniques practiced in scaling and polishing and adjusts the various types of apparatus covered teeth. Must have knowledge of purpose and prin above. ciples of sterilization procedures. Must have knowl RADAR MECHANIC, BEACON (851) edge of dental instruments, their uses and mainte nance, and of drugs commonly used in dental pro Performs first and second echelon maintenance cedures, their handling, storage, uses, manner of and repair on radio sets and equipment Navy Type application, and dangers. YH/YJ, SCR-621, SCR-620, SCR-620y2, SCR- Completion of Dental Assistant's course at an 640, BABS and similar devices. Tests, cleans, and Army school or equivalent training and experience adjusts the various types of apparatus covered essential. above. SUGGESTED SUBSTITUTES RADAR MECHANIC, RCM (852) 067 Dental Laboratory Technician Performs first and second echelon maintenance 409 Medical Technician and repair and operates radio equipment such as 657 Medical Aidman SCR-587 and similar devices. Tests, cleans, and adjusts the various types of apparatus covered RADAR MECHANIC, SEA SEARCH (LAB) (856) above. Performs second echelon maintenance and repair RADAR MECHANIC, NAVIGATION (853) on radio sets and equipment SCR—717, SCR-729. SCR-595/695, RC-217, and similar devices. Tests, Performs second echelon maintenance and repair cleans, and adjusts the various types of apparatus on radio sets and equipment SCR-622/722, RC-24, covered above.

AGO 3006A 109 TM 12-427 5 Feb 46 C3

Completion of prescribed radar mechanic's SUGGESTED SUBSTITUTES course at an Army school or equivalent experience 292 Chemist required. 409 Medical Technician 411 Chemical Laboratory Assistant MEDICAL LABORATORY TECHNICIAN (858) 657 Medical Aidman Conducts microscopic and chemical tests and 858 Medical Laboratory Technician analyses at a medical laboratory to determine pres ence of germs and chemical composition of body RADAR MECHANIC (GEE) (860) fluids, and to prepare cultures, vaccines, and Performs first and second echelon maintenance serums. and repair on radio equipment Gee. Mark II and Sets up and adjusts apparatus, such as beakers, similar devices. Tests, cleans, and adjusts the vari tubes, mortars, burners, centrifuge, microscope, ous types of apparatus covered above. and slides. Accomplishes complete blood count and allied SURGICAL TECHNICIAN (861) hematological procedures, including malaria smears, blood typing, and sedimentation rate. Performs a variety of nonprofessional surgical Examines blood, urine, feces and other composi and medical duties in rendering surgical care and tions for their chemical content by qualitative and treatment to patients. quantitative methods. Identifies by smear and cul Prepares operating room and surgical equipment tural techniques pathogenic bacteria and parasites. for use, cleaning and washing equipment and ster Performs standard serological procedures for syphi ilizing linen, equipment, and instruments. Assists lis, typhoid fever, typhus, and other infectious operating personnel, preparing patients for opera diseases. tion, assisting in the administration of hypodermic May operate electrocardiagraph and basal metab injections and anesthetics, and handing instru olism equipment and record data. May process ments and materials to surgeon. Assists in trans human blood to prepare plasma. porting patients to and from operating rooms, gives Should have working knowledge of laboratory first aid treatment, changes dressings and bandages, techniques, histology, and parasitology. treats minor injuries such as cuts, bruises, and boils, and performs other duties in the preoperative SUGGESTED SUBSTITUTES and postoperative care and treatment of surgical 409 Medical Technician cases. 411 Chemical Laboratory Assistant Must have knowledge of anatomy, physiology, 657 Medical Aidman materia-medica, and operating-room procedures. PHARMACY TECHNICIAN (859) SUGGESTED SUBSTITUTES 409 Medical Technician Veterinary Pharmacy Technician 657 Medical Aidman Compounds and dispenses medicines and pre pares stock solutions and powders according to RADAR MECHANIC, IFF (862) specifications. Tests, adjusts, maintains and performs second Determines quantity and kind of chemicals and echelon repair on IFF equipments such as SCR- drugs from prescription or stock number and 515, -595, -695, plus radar sets AN/APS-13 and weighs out on scales, or measures, proper amounts. SCR-729. Understands the circuits arid construc Pulverizes ingredients in mortar, measures solu tion of these equipments. Is also qualified in the tions in graduated cylinders, pours liquids into proper use of related testing and measuring ap bottles, and affixes labels, stating name of com paratus. pound and dosage, to boxes and bottles. Main Completion of prescribed radar mechanic course tains file of all prescriptions and record of all at an Army school or equivalent experience re narcotics received and issued. quired. Must have knowledge of apothecaries' system and be able to use balances, hydrometers, ther- RADAR MECHANIC, GCA (863) memeters, and chemical equipment. Must have knowledge of chemistry and physical properties of Operates GCA equipment and performs first and solid and liquid matter. second echelon maintenance work in the field on

11O AGO 3006A 5 Feb 46 TM 12-427 C3 all elements of ground controlled approach equip SUGGESTED SUBSTITUTES ment, such as AN/MPN-1. 844 Gun Crewman, 873 Gun Crewman, Tests all GCA radar and radio equipment for Light Artillery Heavy Artil- faulty operation, makes minor repairs to or re 845 Gun Crewman, lery (Single places defective components, cleans and adjusts Heavy Artil Load) equipment to maintain efficient operation, assem lery (Multiple 1531 Gun Crewman, bles and disassembles equipment as required for Load) Pack Artillery movement. Sets up and aligns equipment for operation; ob serves and interprets radar data, and transmits this RADAR OBSERVER, SEA SEARCH (866) information to the GCA controller by means of Operates and performs first echelon maintenance suitable position indicators. Must be able to work on radio sets and equipment SCR-517/717, SCR- efficiently under long periods of emotional stress 729, and SCR-595/695. Must be physically quali and have a general knowledge of instrument flying fied for flight duty, nonpilot. as gained from the Link Trainer and from flying. Should have some knowledge of air navigation. Must have qualified as a Radar Mechanic GCA RADAR MECHANIC, BOMBARDMENT (867) (863) at an AAF Technical School, or have com Performs first and second echelon maintenance pleted equivalent training in field service as required and repair on radio equipment such as Airborne to perform the above duties. H2X and similar devices (ground duty). Tests, cleans, and adjusts the various types of apparatus GUN CREWMAN, MEDIUM ARTILLERY (864) covered above. Ammunition Handler Gunner RADIO-TELETYPE MECHANIC (868) Ammunition NCO Cannoneer As a gun crew member of a 155-mm Howitzer or Maintains, repairs, and performs first and second 4.5-inch Gun, using separate loading ammunition, echelon maintenance on designated mechanical en assists in moving, emplacing, firing, displacing, and coding and decoding devices used in conjunction withdrawing the piece in combat operations. with radio teletype systems. Performs one or more of the following opera Must be authorized to perform duties in connec tions during firing mission. Sets horizontal angle tion with secret and confidential cryptographic from established position by means of panoramic systems of the Army, according to specifications set sight and manipulates traversing hand wheel to lay forth in WD regulations. Must be thoroughly gun on target. Makes additional changes in deflec familiar with AR 380-5 and FM 24-10 and 24-8. tion as directed. Sets announced elevation on eleva tion quadrant. Opens and closes breech. Inspects DF EVALUATOR (869) and cleans projectile to prepare for loading and attaches fuze using fuze wrench. Sets fuze for quick, Operates at an Evaluator station centrally lo delay or time action, using fuze setter. Places pro cated within a network of radio direction finder jectile on loading barrow, using rammer to seat stations. Plots bearings on aircraft in flight and projectile in breech recess. Removes powder charge evaluates the probable accuracy of fixes derived from container and inserts it in breech recess. In from these bearings. Relays the result of evalua serts primer on firing-mechanism block. Fires piece tion made to aircraft lost in flight for the purpose by pulling hand lanyard. After misfire removes of directing such aircraft safely to destination. unfired round, using rammer and rammer staff. Must be familiar with various chart and map Inspects bore and swabs with water. Cleans breech projections, possess knowledge of great circle and firing mechanism block. Assists in such main tracks, true and magnetic bearings, and conditions tenance operations as cleaning, oiling, and rust- affecting them. Must be able to interpret ionospheric proofing of vital parts of gun. conditions as they affect bearings made by radio At supervisory level, is responsible for control, direction finding devices. Must be familiar with coordination and tactical employment of medium operation of a direction finder network and possess artillery pieces and crew members. a limited knowledge of air navigation.

AGO 3006A 111 TM 12-427 5 Feb 46 C3 CHEMICAL NONCOMMISSIONED OFFICER At supervisory level, is responsible for control, (870) coordination and tactical employment of heavy Chemical Technician (AAF) pieces and crew members. Instructs in the means of identification, charac SUGGESTED SUBSTITUTES teristics, and tactical use of the various field chemi 844 Gun Crewman, 864 Gun Crewman, cal agents. Conducts training in the use and care Light Artillery Medium Artil- of gas masks and other CW protective equipment. 845 Gun Crewman, lery Demonstrates the use of smoke pots to produce Heavy Artil- 1531 Gun Crewman, smoke screens. Trains others in individual decon lery (Multiple Pack Artillery tamination measures and first aid for gas casualties. Load) Supervises the construction of gasproof shelters, and the training of gas sentinels. Assists chemical PHOTO-INTERPRETER (890) officer in checking the proficiency of gas discipline. Collects and identifies enemy chemical agents Plots, studies and interprets aerial photographs and materiel, assists chemical officer in evaluating to determine the extent and location of enemy forces information relative to chemical intelligence. Ad and installations. vises commanding officer of probable gas attack Analyzes and classifies photographs, comparing based on study of weather and terrain. Detects and them with available maps and photographs, and de posts gassed areas. termines the nature of the objects. Prepares intelli Assists administration of CW supplies for train gence studies indicating the location, extent and ing purposes, in maintaining adequate supply of physical characteristics of enemy installations, air protective equipment; maintains CW equipment in ports, dispositions, equipment, preparation of posi good working order and supervises filling and de tions, movement, demolitions and strength. contaminating operations; keeps records pertaining Uses topographic maps, stereoscopes, drafting in to issue and repair of CW equipment. struments, slide rules, contour sights, and combina tions of precision instruments to determine and GUN CREWMAN, HEAVY ARTILLERY (Single interpret such details as type, size, and stage of Load) (873) construction, degree and type of camouflage, type of territory, and surrounding area and extent of Ammunition Handler Gunner damage inflicted. Ammunition NCO Cannoneer Must be able to apply technical principles of topo As crew member of a 155-mm Gun or 8-irich graphic interpretation in order to give tactical units Howitzer, using separate loading ammunition, as a graphic and clearly annotated exposition of ter sists in moving, emplacing, firing, and withdraw rain and physical characteristics of objectives. ing the piece in combat operations. Should have good visual acuity. Performs one or more of the following opera tions during the firing mission: Sets horizontal FACSIMILE OPERATOR (893) angle from established position by means of pano ramic sight and manipulates traversing hand wheel Operates facsimile sending and receiving equip to place gun on target. Makes additional changes ment, both page and tape type, and performs the in deflection as directed. Sets announced elevation photographic work required in facsimile transmis on elevation quadrant. Opens and closes breech. sion and reception. Inspects and cleans projectile to prepare for loading Should be able to perform the reduction by and attaches fuze, using fuze wrench. Sets fuze for photographic methods of large originals to sections quick, delay or time action, using fuze setter. smaller in size, suitable for facsimile page trans Places projectile on loading barrow, using rammer mission. Must be able to perform routine mainte to seat projectile in breech recess. Removes powder nance involving simple adjustments, none of which charge from container and inserts it in breech represents a major repair or adjustment. recess. Inserts primer on firing-mechanism block. FACSIMILE TECHNICIAN (894) Fires piece by pulling hand lanyard. After misfire removes unfired round, using rammer and rammer Installs, inspects, services, and repairs facsimile staff. Inspects bore and swabs with water. Cleans equipment. breech and firing mechanism block. Assists in Must have a comprehensive understanding of the such maintenance operations as cleaning, oiling, operation and construction of sending and receiving and rustproofing of vital parts of gun. facsimile equipment, both for page and tape opera-

112 AGO 3006A 5 Feb 46 TM 12-427 C3

tion. Must have a knowledge of photographic dark Should be familiar with the examination of am room procedure as applied to facsimile operation. munition for such defects as dented or corroded cartridge cases. Should be familiar with opera DIRECTOR REPAIRMAN, ELECTRICAL, HEAVY tion of ammunition supply system. ANTIAIRCRAFT ARTILLERY (899) SUGGESTED SUBSTITUTE Inspects, lubricates, and repairs electrical fire 656 Submarine Mine Loader control directors used in connection with antiair craft artillery of 3 inches and larger. SMALL-ARMS WEAPONS MECHANIC (903) Examines instrument for efficient operating con dition by setting in static and range problems, oper Machine Gun Mechanic ating equipment, and checking dial reading and re Weapons Mechanic, Aircraft cordings against standard tolerance tables for er Weapons Mechanic, Hand and Shoulder. rors. Repairs and replaces malfunctioning units, Weapons Repairman, Small-Arms such as weak and burned out electrical components Maintains and makes third and fourth echelon and talk amplifiers and multipliers, by disassem repairs on all types of hand and shoulder weapons bling unit, replacing worn or defective parts, and and machine guns, including submachine guns and making necessary precision adjustments. Reas aircraft machine guns. sembles, inspects, and retests instrument. Visually inspects and manually operates weapons Uses such tools and equipment as voltmeter, am to check for malfunctioning of such elements as meter, ohmmeter, vernier depth gauge, stop watch bolt action, trigger tension, rifling in gun barrel, pliers, screw drivers, tweezer, punch drive pin, ad firing mechanisms, ejectors, ammunition feed mech justable and socket wrenches, and electric soldering anisms, and extractors. Disassembles and repairs 'iron. and replaces worn and defective parts of such weap Should have working knowledge of algebra and ons as pistols, revolvers, rifles, carbines, riot guns, trigonometry. submachine guns, and 30- and 50-caliber machine guns. Reassembles weapon, lubricating, machin SUGGESTED SUBSTITUTE ing, grinding, and making precision adjustments of 917 Director Repairman, Mechanical, Heavy Anti all parts to secure required clearance and toler aircraft Artillery ances. Tests repaired weapons by simulated or actual MUNITIONS WORKER (901) firing of weapon. Must be able to fabricate simple replacement parts. Ammunition Handler Uses such tools and equipment as combination Packer, High Explosives and spanner wrenches, pliers, screw drivers, ham mers, punches, drift pins, reamers, drills, drill press, Performs various tasks in connection with storage power grinders, and precision gauges and mi and issue of all types of ammunition, including crometers. bombs and pyrotechnics. For Army Air Forces, must be qualified in third Loads, unloads, and stores ammunition at ammu or fourth echelon maintenance and repair of 20-mm, nition dumps, magazines, or ammunition supply 37-mm, and 75-mm aircraft cannon. points. Loads and unloads heavy projectiles and Must be thoroughly familiar with construction powder charges from trucks and freight cars and and operating features of all types of small-arms transports them by hand, hand trucks, or carts. weapons including nomenclature of replacement May assist in the destruction of defective or de parts. teriorated ammunition. Must have a thorough knowledge of safety regu SUGGESTED SUBSTITUTES lations and ammunition handling procedures, in cluding Ordnance ammunition identification code 511 Armorer system. 911 Airplane Armorer

AGO 3006A 112A SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

MECHANIC, ENGINE, WHEEL VEHICLE (Gaso 905 Mechanic, Engine, Wheel Vehicle (Gasoline) line) (905) 908 Mechanic, Chassis, Track Vehicle Mechanic, Engine, Wheel Vehicle Inspects and performs unit replacement, field MECHANIC, TURRET (907) repairs, and adjustments, and complete unit re Inspects, tests, and performs unit replacement, building of gasoline in-line engines in all types of field repairs and adjustments of stabilizers, aux military vehicles. iliary power plants, gun mounts, and complete unit Examines malfunctioning -engines to determine rebuilding of traversing mechanisms used in turrets causes of faulty operation, checking such elements of tanks and other combat vehicles. as valves, pistons and piston rings, crank shafts, Determines causes of malfunctioning of turret connecting rods and bearings, and timing gears. units by visual inspection or by feel and sound Disassembles and replaces defectives or damaged while mechanically operating unit. Using auto me subassemblies or completely rebuilds assemblies, chanic's tools, including differential hoists, dis making such major repairs as refacing and reseat mantles and removes turret unit or subassemblies. ing of valves, taking up or replacing main and con Disassembles and repairs or replaces defective or necting rod and wrist pin hearings, and fitting and worn parts, performing grinding, scraping, or ma replacing cylinder sleeves and pistons. chining operations necessary to secure accurate fits • May operate engine lathe and power grinders within specified tolerances. Reassembles, lubricates, to secure proper tolerances and clearances in re and makes final inspection to determine that all fitting replacement parts. May operate dyna parts of turret are in satisfactory operating condi mometer tester in testing and adjusting newly re tion. built engines or in diagnosing trouble in malfunc Must have a thorough knowledge of the construc tioning engines. tion and operation of turrets on military combat Uses automobile mechanic's tools, including en vehicles, including nomenclature of replacement gine lathes, power grinders, and valve refacing parts. equipment. Must have a thorough knowledge of the principles SUGGESTED SUBSTITUTES of internal combustion engines. 014 Automotive Mechanic (Second Echelon) 341 Shop Maintenance Mechanic - SUGGESTED SUBSTITUTES 660 Tank Mechanic, Minor Maintenance 013 Diesel Mechanic 906 Mechanic, Chassis, Wheeled Vehicle 014 Automotive Mechanic (Second Echelon) 908 Mechanic, Chassis, Track Vehicle 909 Mechanic, Engine, Track Vehicle 913 Artillery Mechanic, Light MECHANIC, CHASSIS, WHEEL VEHICLE (906) MECHANIC, CHASSIS, TRACK VEHICLE (908) Inspects and performs unit replacement, field repairs, adjustments, and complete rebuilding of Performs unit replacement, field repairs and ad the chassis and power train components of all types justments, trouble diagnosis, and complete rebuild of wheel and half-track vehicles. ing of units of power train and suspension systems Examines vehicles for worn, damaged, or defec of full track-laying vehicles other than tractors and tive parts by visual inspection or by road testing artillery prime movers. vehicle, checking such elements as steering, wheel Visually examines and mechanically tests light, alignment, braking efficiency, gear shift, mechanfsm, medium, and heavy tanks for malfunctioning of and clutch operation. Disassembles, repairs, and power train and suspension systems, observing for makes adjustments on such units as front and rear damaged or broken parts and listening for noises axle assemblies, drive shaft, transfer case assembly, indicating improper functioning or defective gears clutch and transmission, chassis frame, and wheel and bearings. Disassembles, repairs, and replaces alignment, using such tools and equipment as hy worn or defective parts of final drive gear assem draulic jacks, chain hoist, various size light and blies, power take-off assemblies, stabilizer springs, heavy open-end, straight, and socket wrenches, hand stabilizer crank assemblies, clutch assemblies, steer scraper, bearing pullers, screw drivers, hammers, clutch controls, transmission gears and gear shift yoke pullers, arbor presses, drill presses, bench mechanisms, track support rollers and assemblies, vise, wheel and frame alignment equipment, and and cowl assemblies. Reassembles and installs re wheel balancer. paired assemblies and subassemblies and tests ve hicle for satisfactory operating condition. SUGGESTED SUBSTITUTES Uses such tools and equipment as light and heavy 014 Automotive Mechanic (Second Echelon) hammers and pry bars, various size light and heavy

113 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL box, stilson, socket and straight wrenches, pliers, .to such weapons as .50-caliber machine guns, 30- screw drivers, chisels, punches, reamers, arbor caliber machine guns, 37-mm cannon, rifles, car presses, pullers, heavy hydraulic jacks, chain hoists, bines, and pistols. and welding equipment. Uses combination tool, wrenches, screw drivers, micrometers, depth gauges, and other hand or bench SUGGESTED SUBSTITUTES tools in making these repairs. Loads bombs on 660 Tank Mechanic, Minor Maintenance bomb racks of aircraft prior to missions. 906 Mechanic, Chassis, Wheel Vehicle Must be familiar with armament inspection and MECHANIC, ENGINE, TRACK VEHICLE (909) maintenance procedures, and with safety regulations in handling transporting and loading bombs and Inspects and performs unit replacement, field re other ammunition. Must be familiar with safety pairs, or complete rebuilding of gasoline or Diesel regulations pertaining to chemical warfare. engines. Inspects and tests malfunctioning gasoline radial ELECTRICIAN, AUTOMOTIVE (912) engines, Diesel and gasoline inline internal com bustion engines and accessory equipment in track- Automotive Electrician, Fourth Echelon (AAF) laying vehicles to ascertain extent and nature of re Electrician, Track and Wheel Vehicle pairs required. Repairs, adjusts, and makes sub- . Storage Battery Electrician assembly and assembly replacements necessary to Installs, tests, repairs, or rebuilds ignition sys restore engine to satisfactory operation. Performs tems, starters, coil and panel instruments, wiring, major overhaul and rebuild of engines by disas and other electrical systems and equipment on all sembling and carefully examining all parts of such types of Army vehicles and automotive equipment. assemblies and subassemblies as cylinders, crank- Determines causes of malfunctioning of electrical case, front and rear sections, diffuser section, and units or systems by visual inspection or by use of other internal mechanisms to determine wear and such testing devices as voltmeter, ammeter, and condition of parts. Repairs and replaces worn and tachometer. Using electrician's tools, disassembles, defective parts, reassembles units and engine, and repairs, and replaces defective or worn parts and tests on engine test block, using such tools and wiring and makes adjustments to restore unit or equipment as adaptors, arbor presses, drills and system to satisfactory working condition. taps, various size pullers and reamers, straight and Must have a thorough knowledge of the construc socket wrenches, hammers, pliers, screw drivers, tion and operation of automotive electrical systems valve clearance adjusting screw wrench, bench including all their component parts. Must be able vises, soldering irons, engine speed gauge, and to use testing devices to determine condition of chain hoists. part or unit and be able to repair or select and May make minor repairs on such units as car install suitable replacement parts. buretors, supercharges, fuel pumps, and magnetos. SUGGESTED SUBSTITUTES Uses feeler gauges, inside and outside microm eters, and cylinder bore gauges. 014 Auomotive Mechanic (Second Echelon) 138 Motorcycle Mechanic SUGGESTED SUBSTITUTES 684 Airplane Power Plant Mechanic ARTILLERY MECHANIC, LIGHT (913) 905 Mechanic, Engine, Wheel Vehicle (Gasoline) Inspects, tests, and performs field repairs and adjustments, unit replacements, or complete rebuild AIRPLANE ARMORER (911) ing of light artillery weapons and auxiliary equip Performs first and second echelon maintenance ment in a mobile or fixed artillery repair shop. on all armament within the unit and loads bombs Determines causes of malfunctioning of such and ammunition in aircraft. units as breech-block, firing mechanisms, recoil Periodically examines aerial machine guns and and counterrecoil, elevating and traversing equip other aircraft armament and equipment such as ment, and shock absorbing devices, by visual inspec aerial cannon, bomb racks, bomb release mecha tion, mechanical operation of unit, and by use of nisms, gun mounts, gun turrets, and pyrotechnics for such testing devices as vernier calipers, pressure cleanliness and proper functioning. Installs arma gauges, and spirit levels. Using artillery mechanic's ment and equipment and checks their completeness hand tools, repairs or replaces assembly or sub- prior to missions. Removes and replaces aircraft assemblies or otherwise tears down and completely armament to be serviced or repaired. Removes and rebuilds units, examining each part carefully for replaces bombsights. Inspects, disassembles, cleans, wear, breaks, or other undesirable characteristics." repairs, assembles, and makes parts replacements Replaces worn and broken parts and reassembles 114 5 Feb 46 TM 12-427 C3

unit, lubricating all moving parts and making ad Using such hand and bench tools and equipment as justments for alignment and clearance. machinists' hammers, screw drivers^ various size Must have knowledge of the construction, opera socket and straight wrenches, handpower drill, tion, and nomenclature of light artillery weapons. block-and-tackle, and hoists, disassembles and re Must know the nomenclature of replacement parts. pairs and replaces defective parts and assemblies of breechblock and firing mechanism, recoil and SUGGESTED SUBSTITUTES counterrecoil systems, shock absorbing devices, car 341 Shop Maintenance Mechanic riage and traversing and elevating mechanisms. 802 Artillery Mechanic, Minor Maintenance 914 Artillery Mechanic, Heavy SUGGESTED SUBSTITUTES 915 Artillery Mechanic, Antiaircraft Artillery 802 Artillery Mechanic, Minor Maintenance 833 Artillery Mechanic, Antiaircraft, (Automatic ARTILLERY MECHANIC, HEAVY (914) Weapons) Minor Maintenance 834 Artillery Mechanic, Antiaircraft, Minor Main Artillery Mechanic. Seacoast tenance (Gun) Inspects, tests, and performs field repairs and 913 Artillery Mechanic. Light adjustments, unit replacements, or complete re 914 Artillery .Mechanic, Heavy building of heavy artillery weapons and auxiliary equipment in a mobile or fixed artillery repair DIRECTOR REPAIRMAN, MECHANICAL shop. HEAVY ANTIAIRCRAFT ARTILLERY (917) Determines causes of malfunctioning of such units as breech block, firing mechanism, recoil and Inspects, repairs, adjusts, and lubricates fire con counterrecoil, elevating and traversing equipment, trol directors, such as M7, used with antiaircraft and shock-absorbing devices, by visual inspection, artillery of greater than 40-mm caliber. mechanical operation of unit, and by use of such Disassembles fire control directors and inspects testing devices as vernier calipers, pressure gauges, parts for wear and breakage. Repairs or replaces and spirit levels. Using artillery mechanic's tools, worn or broken parts such as rate and altitude rate repairs or replaces assembly or subassemblies or mechanism, slip clutches, switches, director trans otherwise tears down and completely rebuilds units, mitters, spot dials, and handwheels. Makes precise examining each part carefully for wear, breaks, adjustments to internal gears and units. Lubricates or other undesirable characteristics. Replaces worn moving parts-. and broken parts and reassembles unit, lubricating Equipment includes voltmeter, ammeter, ohm- all moving parts and making adjustments for align meter, screw drivers, Vernier depth gauge, electric - ment and clearance. soldering iron, solder, wrenches, tweezers, and Must have knowledge of the construction and punches. operation and nomenclature of heavy artillery Must be familiar with construction and operation weapons. Must know the nomenclature of replace of electrical fire control apparatus. ment parts. SUGGESTED SUBSTITUTES SUGGESTED SUBSTITUTES 634 Fire Control Electrician, Antiaircraft (Gun) 341 Shop Maintenance Mechanic 899 Director Repairman, Electrical, Heavy Anti 802 Artillery Mechanic, Minor Maintenance aircraft Artillery 913 Artillery Mechanic, Light 918 Fire Control Repairman, Light Antiairteraft 915 Artillery Mechanic, Antiaircraft Artillery Artillery 919 Control System Repairman, Heavy Antiair ARTILLERY MECHANIC, ANTIAIRCRAFT AR craft Artillery TILLERY (915) FIRE CONTROL REPAIRMAN, LIGHT, ANTI Inspects, tests, and performs major repairs, unit AIRCRAFT ARTILLERY (918) replacements or complete rebuilding of antiaircraft artillery in a mobile or fixed repair shop. Deter Control System Repairman, Light AAA mines causes of malfunctioning of equipment by Director Repairman, Light AAA visual inspection and by use of such testing devices Inspects, repairs, adjusts, and lubricates control as vernier calipers, pressure gauges and spirit levels. directors and remote control system used in con-

AGO 3006A 113 TM 12-427 5 Feb 46 C3 nection with antiaircraft artillery of 40-mm caliber Vernier screws. Disassembles instrument to deter or less. mine type of repair necessary. Checks adjustment Disassembles fire control directors and remote and alignment of lenses and prisms and replaces control systems and inspects parts for wear and defective parts. Checks gear mechanism for wear, 'breakage. Repairs or replaces worn or broken adjusting backlash by filing high spots on meshing parts such as rate and altitude rate mechanism, gears or by replacing defective parts. Lubricates slip clutches, switches, director transmitters, spot mechanism and cleans optical system, using sol dials, and handwheels. Makes precise adjustments vents and lens paper. Reassembles instrument and to internal gears and units. Lubricates moving and checks calibration. parts. Operates a bench lathe, drill press, and bench Tools and equipment include voltmeter, ammeter, grinder to make unobtainable parts or special tools. ohmmeter, screw drivers. Vernier depth gauge, elec Uses special screw drivers, wrenches, files, pliers, tric soldering iron, solder, wrenches, tweezers, and tweezers, hand-drills, air syringe, electric soldering punches. iron, and magnifying glass. Must be familiar with construction and operation Must be able to work to minute tolerances. of fire control apparatus. SUGGESTED SUBSTITUTES SUGGESTED SUBSTITUTES 098 Instrument Repairman, Nonelectrical 634 Fire Control Electrician, Antiaircraft (Gun) 922 Instrument Repairman, Fire Control 913 Artillery Mechanic, Light 919 Control .System Repairman, Heavy Antiair INSTRUMENT REPAIRMAN, FIRE CONTROL craft Artillery ' (922) CONTROL SYSTEM REPAIRMAN. HEAVY Maintains and makes major repairs en all types ANTIAIRCRAFT ARTILLERY (919) of fire control instruments, such as range finder, aiming circle, battery commander's telescope, and Disassembles and assembles for cleaning, repair, nonoptical instruments. adjustment, inspection, and lubrication the compo Sets up and levels fire control instrument on fixed nent parts of antiaircraft artillery fire control data target to determine maladjustment of equipment, transmission systems used for weapons of caliber and makes adjustments to bring instrument within larger than 40-mm. required tolerance. Repairs malfunctioning equip Services generators and such assemblies as multi ment by completely disassembling units, cleaning ple-conductor cables, junction boxes, transmitter, and examining such elements as lenses, prisms, and repeater, receptacle box, azimuth and elevation in worn gear mechanisms. Checks all lenses and dicator, pole receptacle, fuze indicator, and distri prisms for aberrations, replaces worn or defective bution box, by making electrical and mechanical parts, and reassembles and checks holders to make adjustments, repairs, or replacements. Locates sure all parts will be held securely. Tests instru source of electrical difficulty, using such testing de ments possessing double optical systems for proper vices as ohmmeter, ammeter, voltmeter, and revolu columnation. Operates precision bench lathes, drill tion counter. press, and bench grinders to fabricate unobtainable Uses electrician's tools. parts, special tools, and for machining and grind SUGGESTED SUBSTITUTES ing replacement parts to secure proper alignment and clearances. Makes final inspection of fire con 304 Electric Motor Repairman trol instruments. 912 Electrician, Automotive Uses such tools and equipment as instrument re 918 Fire Control Repairman. Light Antiaircraft pairman's tools, bench lathes, spindle drills, col- Artillery limators, and Vernier gauges. HEIGHT FINDER REPAIRMAN (921) Must have knowledge of the construction and op eration of all types of fire control instruments. Maintains and makes major repairs on all height finders used in antiaircraft and seacoast artillery. SUGGESTED SUBSTITUTES Checks calibration by sighting on a fixed point 098 Instrument Repairman, Nonelectrical of known distance to determine whether required 381 Watch Maker tolerance can be obtained by regulating various 921 Height Finder Repairman

116 AGO 3006A 5Feb46 TM 12-427 C3

WELDER, ARMOR PLATE (923) . amphibian tanks and other military vehicles, using acetylene or electric arc welding equipment. Bolts Performs.oxacetylene and electric arc welding on or clamps armorea piate in position for welding. various types -of armor plate, including homoge- Assembles welding equipment, acetylene or electric neous and face-hardened materials. arc depending on type of welding necessary, posi- Welds armor plate on turrets, bodies, and shields tion of plate, and stage of metals. Welds armor of tanks, armored cars, half track, armored trains, plate and forms a smooth-finished surface. Re-

AGO 3006A 11«A SPECIFICATIONS FOK MILITARY 'OCCUPATIONAL SPECIALTIES pairs dents, cracks, and holes in armor plate by Reviews all technical orders and data, determines welding armor plate over damaged surface. their application to airplanes and equipment for Equipment includes acetylene torch, cutting as which he is responsible, and explains their con sembly, and set of tips, electric arc-welding ap tents to subordinates. Ascertains that periodic in paratus, hand operated lever shears, electrically spections of airplanes and equipment are per powered grinder and burnishing machines, hand- formed at the proper time and in the manner speci operated bead former, electrically powered tubing fied by regulations. saw, steel welding bench, combination rule and set, Approves repairs made to equipment and dividers, wrenches and electric drill. grounded airplanes in order to assure airworthi Should be able to read blue prints. Should be ness and high quality in work performed by main able to plan and construct jigs for holding parts tenance and repair personnel. together during welding process. May direct the maintenance, repair, and salvage of damaged airplanes that can be performed by per SUGGESTED SUBSTITUTE sonnel and equipment of a mobile repair unit. May 256 Welder, Combination decide action to be taken in connection with dam aged airplanes. May exercise administrative con BOMB SALVAGE TECHNICIAN (924) trol of unit while it is operating away from home Bomb Salvager base. Performs various technical operations in connec Must have a thorough knowledge of supply, main tion with the excavation and disposal of unexploded tenance, and inspection procedures of the Army enemy demolition and fragmentation bombs. Air Forces. Should be thoroughly familiar with "Surveys and lays out area to be excavated. Sets maintenance of all types of airplanes. Should know up equipment and by use of earth-boring machine, fire prevention rules and safety procedures for jack hammers, hand shovels, and shoring timber, shops and hangars. removes and braces earth or debris surrounding bomb, taking every precaution to prevent its acci MECHANIC, FUEL INDUCTION (926) dental explosion. Operates special bomb disposal Carburetor Specialist equipment to neutralize explosive power of bomb Fuel Induction Repairman (AAF) and removes missile to designated area for destruc Inspects, tests, and performs complete overhaul tion. Prepares report on completed operations, list and rebuild operations on carburetors, injectors, ing such information as will assist in future opera blowers, and superchargers used on military ve tions. hicles. May supervise and instruct personnel in tech Disassembles, repairs, and replaces such worn, nical operations of bomb disposal equipment. damaged, or defective parts of Diesel injectors, Must be familiar with all types of enemy fuses carburetors, fuel, and oil pumps, and primers as and demolition and fragmentation bombs, and with floats, float valves, pivot points, needle valves, piston operation of special bomb disposal equipment. stem bushings, and accelerator pump pistons. Cleans, inspects, tests, and performs such grinding, AIRCRAFT ENGINEERING TECHNICIAN (925) machining, and adjusting of parts as is necessary to securely fit them within specified tolerances, using Aircraft Engineering Chief such tools' and equipment as carburetor repair Airplane Inspector tools, engine lathes, electric hand-drills, high pres Line Chief sure gauges, hydraulic pumps, and reamers. Re Mobile Repair Unit Chief assembles and tests unit to determine adequacy of Technical Inspector repair and for satisfactory operational performance. Supervises third and fourth echelon of Army Must be skilled in the use of mechanic's hand Air Forces maintenance or technical inspection ac and bench tools and be able to operate engine lathes tivities in a repair shop or .technical inspection used to ream bushings and reface needle valves. office. Supervises workers representing several distinct SUGGESTED SUBSTITUTES trades and specialties in the various shops and sec 013 Diesel Mechanic - tions through their immediate superiors. Assigns 905 Mechanic, Engine, Wheel Vehicle (Gasoline) tasks to the various shops and sections and coordi 909 Mechanic, Engine, Track Vehicle nates the operation of the entire organization. Checks the assignment of personnel. Assists in diag AMPHIBIAN TRANSPORTATION NONCOMMIS nosing trouble as problems arise. Checks repair SIONED OFFICER (927) \vcrk performed by maintenance personnel. Amphibian Truck Noncommissioned Officer 117 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

Supervises the activities of amphibian truck per Checks operatioruof lights, brakes, steering mech sonnel engaged in transporting materiel and troops anism, and other working parts. Services, cleans, from ships to inland points in one continuous oper and lubricates vehicle. Makes minor road repairs ation. Assigns jobs to drivers and mechanics, es to vehicle in emergency. Accomplishes standard tablishes work schedules, and determines priority vehicle report forme. Camouflages vehicle. Oper of work. Supervises requisitioning and issuance ates hoists, fuel pumping, or other special equip of supplies, and the loading and disposition of ment mounted on vehicle. cargo and personnel to inland distribution points Should know general principles of the internal and return to ship or station. Assists in planning combustion engine, power transmission, and elec movement of amphibian trucks in land and water trical systems of vehicle. Must know civilian and operations. Supervises inspection and repair of military traffic regulations, convoy rules, and road amphibian truck hull, motor, and auxiliary equip discipline. Must know how to read maps and over ment. lays and be able to drive at night and during Must know amphibian vehicle operation, mainte blackout over all types of terrain. Must possess nance, repair, and tactical operations in connection Army motor vehicle operators' permit.

with amphibian trucks. SUGGESTED SUBSTITUTE Must be qualified amphibian truck driver. .931 Truck Driver, Heavy SUGGESTED SUBSTITUTES 797 Amphibian Truck Mechanic (DUKW) INSTRUMENT LANDING EQUIPMENT 934 Amphibian Truck Driver MECHANIC (933) Sets- up, operates, and maintains mobile instru TRUCK DRIVER, HEAVY (931) ment landing equipment consisting of radio trans Driver, Half-Track . mitters, which send out radio beam signals to be Dispatcher-Driver used by aircraft landing by instrument. Heavy Automotive Equipment Operator (AAF) Locates transmitter trucks at proper position in Tractor Driver relation to runway, sets up antennae, and connects Truckmaster power units. Tunes transmitters to proper fre Drives heavy duty truck (over 2%-ton capacity) quencies and checks their operation. Inspects trans or half-track to transport or tow personnel, mate mitters, isolates and analyzes defects, tightens loosa riel, or equipment. connections, and makes other minor repairs to Checks operation of lights, brakes, steering mech equipment. anism, and other operating parts. Services, cleans, Tools and equipment used include tube tester, and lubricates vehicle. Makes minor road repairs ammeter, ohmmeter, voltmeter, screw drivers, to vehicle in emergency. Camouflages vehicle. Ac wrenches, and pliers. complishes standard vehicle report forms. Tools used include pliers, wrenches, hammer, SUGGESTED SUBSTITUTES jack, grease gun. and oiling equipment. 647 Radio Repairman, Aircraft Equipment Should know general principles of the internal 648 Radio Repairman combustion engine, power transmission, and elec 649 Radio Repairman, Fixed Station trical system in an automotive vehicle. Must know 759 Radio Operator, CNS civilian and military traffic regulations, convoy AMPHIBIAN TRUCK DRIVER (934) rules, and road discipline. Must know how to read maps and overlays, and be able to drive at night As a member of an amphibian truck crew, oper and during blackout over all types of terrain. Must ates and maintains an amphibian truck used in possess Army motor vehicle operators' permit. transporting materiel and troops from ships to in land points in one continuous operation. SUGGESTED SUBSTITUTE Prepares truck for debarkation, checking engine, 932 Special Vehicle Operator body, equipment, and bilge plugs. Maneuvers truck in water to prevent capsizing, crashing into SPECIAL VEHICLE OPERATOR (932) other harbor craft and ships, and grounding on Operates large semitrailers, trailer-trucks, wreck sand bars or reefs. Controls loading of truck to ing equipment, refueling units, Diesel powered prevent damage to cargo and truck by having cargo towing equipment, and other special purpose ve properly stowed,, braced, and .lashed. In rough hicles used in connection with construction, sal weather, rigs cargo tarpaulin, clamps hatch covers, vage, or transportation activities, and operates spe sets windshield surf guard, and rigs cab tarpaulin. cial equipment with which vehicle is outfitted. Engages and disengages propeller and wheels, using 118 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES transmission, transfer case, and front axle drive Must be able to read maps and follow flight depending upon operating conditions. Deflates and lines in photographic missions. inflates tires according to type of ground over which truck must travel. Makes preoperation check and AERIAL PHOTOGRAPHER (940) postoperation servicing. Checks gas, oil, tires, Operates photograph equipment from aircraft water, grease cups and bilge plugs, lubricates and for the purpose of determining the effect of bomb oils parts, cleans truck, checks for damage to body ing missions, nature and location of enemy installa and equipment, and paints rust spots. Maintains tions, troop movements or disposition, or compila log of operation, recording compass course, dis tion of maps and photographic mosaics. tances, buoys, vessels passed, currents, and landing Takes either still or motion pictures from the conditions. Camouflages truck on land to prevent air. Operates and assists in installing and maintain detection by enemy land, air, or naval forces. ing one or more types of aerial cameras. Occa May evacuate casualties from inland points to sionally assists in the laboratory processing of mo ships. tion and still photographs. Unloads cargo by hand, wooden chute; ramp, Must be able to read maps and follow flight A-frame, and winch. Uses compass, marine charts, lines in photographic missions. semaphore, lamps, and winch. SUGGESTED SUBSTITUTES Must know navigation rules, harbor markers, cargo stowage, International Morse Code, rigging, 152 Photographer knots, camouflage principles, and radio code. 945 Photographic Laboratory Technician

SUGGESTED SUBSTITUTES CAMERA TECHNICIAN (941) 823 Coxswain, Harbor Craft Adjusts, maintains, and repairs all aerial and 838 Seaman, Landing Craft ground, still, and motion picture cameras used by Army Air Forces. AAF GUNNERY INSTRUCTOR (938) Makes periodic inspections of cameras and lab Instructs military personnel in all phases of oratory equipment, and repairs defects using pre flexible gunnery. cision hand tools. Selects equipment to be used, on Conducts classes utilizing teaching aids such as photographic missions, and checks for proper func charts, models, film strips, and motion pictures. tioning of 'Such mechanisms as film timing and Interprets results of examinations. Administers automatic and semiautomatic features of cameras. phase checks. Conducts range instruction with spe Prepares reports on installation of camera* in air cial reference to the observation of safety precau planes. May repair gun cameras. tions. Organizes students for training in air firing. Must meet the minimum qualifications required RADIOSONDE OPERATOR (942) of an aerial gunner with exception of qualification Performs all technical work in making radio for flying duty which is desirable but not required. sonde observations at radiosonde sections. Makes Must maintain proficiency in the knowledge and soundings with a radiosonde. Operates ground set skills required of an aerial gunner and have ac and obtains proper recorder record. Prepares adia- quired a broad background of experience in flexible batic charts. Evaluates radiosonde observations. gunnery. Prepares isentropic isobar data. Encodes observa AERIAL PHOTOGRAPHER-GUNNER (939) tions for transmission. Performs first and second echelon maintenance on radiosonde ground receiv Operates photographic equipment from aircraft ing set and performs maintenance on radiosonde in flight to determine the effect of bombing mis transmitters. sions, nature and location of enemy installations, Must be capable of operating radiosonde equip troop movements or disposition, or compilation of ment and be well acquainted with forms used in re maps and photographic mosaics. Fires aerial guns cording radiosonde observations. Must be proficient in combat. in the skills required of a weather observer. Takes either still or motion pictures from the air. Operates, assists in installing, and performs PHOTOGRAPHIC LABORATORY TECHNICIAN first and second echelon maintenance of one or (945) more types of aerial cameras. Performs first echelon Aerial Photographic Laboratory Technician maintenance on one or more types of aerial guns Laboratory Technician, Developer, Still and mounts. Occasionally assists in laboratory Laboratory Technician, General processing of motion and still photographic films Lay-out Man, Photographic and prints. Photographer, Developer 119 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

Photographer, Printer designating targets to be tracked, and relaying in Photographer, Retouching Artist formation on approach of potential target^1. Photographic Chief Must have thorough knowledge of aircraft tactics Photographic Darkroom Man and identification. Photographic Laboratory Chief SUGGESTED SUBSTITUTE Photographic Laboratory Supervisor Performs a variety of tasks in connection with 763 Searchlight Crewman photographic processing in a military photographic RADAR MECHANIC, GROUND LORAN (948) laboratory. Prepares and mixes photographic solutions, fol Performs first and second echelon repair and lowing prescribed formula. Develops film by im maintenance en all types of ground loran equip mersing them for prescribed periods at specified ment. temperatures in prepared chemical solutions. Makes Tests equipment for faulty operation. Repairs contact and projection prints by means of printing or replaces worn, broken, or otherwise defective machine, placing sensitized paper over negative and parts. Cleans and adjusts equipment to maintain exposing the prints to electric light, removes prints efficient operation. from machine, develops them in chemical solutions, AMMUNITION RENOVATOR (949) and drys them. In Army Air Forces, assembles Ammunition Inspector uncontrolled mosaic strips, makes reproduction Field Inspector photographs by use of standard copy cameras or Unpacks, disassembles, inspects, repair's, and re othar ground cameras and equipment. assembles various types of ammunition. Performs May spot or retouch photographic prints and renovation of complete rounds or their components negatives, using retouching, fluid, knives, and pen as is necessary, operating assembly and disassem cils. bly machines and other equipment, weighing pow At supervisory level, is responsible for control der, and refuzing projectiles. Cleans and resizes and coordination of laboratory personnel and cartridge cases to meet required dimensions. equipment. Inspects fixed and separate loading ammunition Must be thoroughly familiar with photographic in storage, during renovation, or prior to ship laboratory equipment such as film developers, film ment, disassembling and visually examining to de driers, and print driers. Must be familiar with tect evidence of deterioration, and determining need various types of sensitized materials, print washes, for destruction of renovation. Destroys ammuni and other chemicals used in connection with photo tion and components fay approved methods. May graphic work. supervise and coordinate work of a group of reno vators and munitions workers. May recommend SUGGESTED SUBSTITUTES changes in methods and working procedures. 107 Photolithographer Must know Ordnance and other safety regula 152 Photographer tions governing storage and handling of ammuni tion. SEARCHLIGHT NCO (946) SUGGESTED SUBSTITUTES Directs and supervises crew or crews operating 505 Ammunition Noncommissioned Officer searchlights utilized in detection and illumination 901 Munitions Worker of enemy aircraft or naval craft. Trains various crewmen in operation, mainte WIRE REPAIRMAN, VHF (950) nance, and tactical use of searchlight, control sta Supervises the installation and maintenance of, tion, and power generating unit. Is responsible for and makes repairs to, the lines and wire communi efficient operation of crew during combat. Prior to cation equipment associated with VHF control net going into action, checks all equipment to make systems. certain it is in good working order. Orients or Directs installation of lines and terminal equip supervises orientation of searchlight, control sta ment according to diagram. Inspects, cleans, ad tion, and radar by comparing simultaneous read justs, installs, and replaces parts in switchboards, ings in azimuth and elevation. Issues orders to en switching, and communication devices used in con gage target, and orders adjustments in focus or nection with the wire communication system. Uses tracking when needed. May designate new target. electrician's hand tools. Directs crew going out of action and supervises maintenance of equipment. SUGGESTED SUBSTITUTES May direct various crew chiefs by telephone, 097 Installer-Repairman, Telephone and Telegraph

120 SPECIFICATIONS FOR MILITARY OCCUPATIONAL SPECIALTIES

232 Switchboard Installer-Repairman, Manual ments, using precision electrical and electronic de 261 Wire Chief. Telephone and Telegraph vices and instruments and small hand and light 384 Installer, Toll Telephone and Telegraph machine tools. May be required to instruct person nel in or inspect lower echelon activities with re RADIO REPAIRMAN, VHF (951) spect to repair and maintenance matters. Installs, inspects, and repairs transmitting, receiv Must be able to make any repair, adjustment, or ing, direction-finding, and communication radio, replacement necessary to place the equipment (and equipment used in VHF (control net) systems, usual accessories) in excellent operating condition, either fixed, semifixed, or mobile. including overhaul or reclamation of equipment Tests equipment, using such instruments as volt and parts. meter, ohmmeter, tube testers, and oscilloscope.* Isolates and corrects defects either by repairing SUGGESTED SUBSTITUTE units including resistors, condensers, and hook-up 953 Radar Repairman, Reporting Equipment wire, or by replacing defective parts with new ones. (Other Designated Sets) Improvises or makes substitutions for defective parts when replacements are not available. RADAR REPAIRMAN, AITIBORNE EQUIPMENT Must have general knowledge of the theory of (DESIGNATED SET) (955) operation of radio transmitters, receivers, and re Performs third and fourth echelon maintenance lated equipment including antennas, control boxes, and repairs on designated airborne radar equip and power supply. ment. Disassembles, tunes, aligns, and repairs SUGGESTED SUBSTITUTES equipment, diagnosing malfunctioning of parts and effecting necessary repairs and replacements, using 647 Radio Repairman, Aircraft Equipment precision electrical and electronic devices and in 648 Radio Repairman struments and small hand and light machine tools. 649 Radio Repairman, Fixed Station May be required to instruct personnel in or in 759 Radio Operator, CNS spect lower echelon activities with respect to repair RADAR REPAIRMAN, GUNLAYING EQUIP and maintenance matters. MENT (DESIGNATED SET) (952) Must be able to make any repair, adjustment, or replacement necessary to place the equipment (and Performs third and fourth echelon maintenance usual accessories) in excellent operating condition, and repairs on designated mobile or fixed ground including overhaul or reclamation of equipment radar equipment. Disassembles, tunes, aligns, and and parts. repairs equipment, diagnosing malfunctioning of parts and effecting necessary repairs and replace AIRPLANE CARBURETOR REPAIRMAN (956) ments, using precision electrical and electronic de vices and instruments and small hand and light Makes flaw test and performs third and fourth machine tools. echelon maintenance of airplane carburetors. May be required to instruct personnel in or in Disassembles, inspects, repairs, replaces parts, spect lower echelon activities with respect to repair reassembles, and adjusts all float and pressure air v and maintenance matters. plane carburetor units such as fuel control, water Must be able to make any repair, adjustment, or injection systems, air flow, automatic mixture con replacement necessary to place the equipment (and trol, and diaphragm acceleration pumps. usual accessories) in excellent operating condition, AIRPLANE ELECTRICAL INSTRUMENT ME including overhaul or reclamation of equipment CHANIC (957) and parts. Inspects, disassembles, repairs, cleans, assembles, SUGGESTED SUBSTITUTE and calibrates electrically operated aircraft instru 952 Radar Repairman, Gun-laying Equipment ments and control devices such as voltmeters, am (Other Designated Sets) meters, synchroscopes, thermometers, fuel mixture indicators, ohmmeters and position indicators. RADAR REPAIRMAN, REPORTING EQUIP Examines defective instruments by checking MENT (DESIGNATED SET) (953) physical condition of cases, cover glasses, pointers, Performs third and fourth echelon maintenance markings, and other external features. Installs in and repairs on designated mobile or fixed ground strument on test board to observe its operation, ana radar equipment. Disassembles, tunes, aligns and lyze malfunctioning, and determines necessary re repairs equipment, diagnosing malfunctioning of pairs. Disassembles instrument cases and repairs parts, and effecting necessary repairs and replace or replaces worn or damaged parts. Reassembles

121 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

instruments and calibrates it by taking check read repairs of gyro instruments which involve opening ings. Reports instruments for salvage if damaged sealed instrument cases. beyond repair. Disassembles, cleans, inspects, repairs, and re Uses such tools and equipment as ammeter, volt places parts, assembles, adjusts, and calibrates gy meter, ohmmeter, electrical and hydraulic test roscopic instruments and control devices such as stands, electrician's hand tools and jeweler's tools. driftmeters, bank and turn indicators, directional AIRPLANE AND ENGINE ELECTRICAL gyro indicators,' gyro horizons, gyro flux gate com ACCESSORIES REPAIRMAN (958) passes, and automatic pilot gyroscopic assemblies. Tests instrument operations with field test sets. Performs third and fourth echelon overhaul and repair in connection with overhaul of airplane and OPTICAL INSTRUMENT REPAIRMAN (962) engine electrical accessories. Performs third and fourth echelon overhaul and Disassembles, cleans, inspects, replaces parts, re repair of optical instruments. assembles, tests and adjusts switch and control panel, warning systems, generators, starters, sole Disassembles, cleans, inspects, repairs, and re noids, magnetos, manifold, batteries, spark plugs, places parts, assembles, adjusts, and calibrates op voltage regulators, and other airplane electrical tical intruments including driftmeters, octants, sex accessories. tants, and polaris. AIRPLANE MECHANICAL INSTRUMENT AIRPLANE SUPERCHARGER REPAIRMAN REPAIRMAN (959) (964) Performs third and fourth echelon maintenance Disassembles, inspects,. cleans, replaces worn or in connection with overhaul of airplane mechanical defective parts, and reassembles integral super instruments. charger units and turbo superchargers. Disassembles, cleans, inspects, repairs, replaces Balances complete rotor assemblies. Examines parts, assembles, adjusts and calibrates mechani turbine buckets for metal fatigue and stretch, re cally operated aircraft instruments and control de placing defective buckets. Replaces broken steels vices including compasses, altimeters, tachometers, and bores bushings on blower sections. Overhauls oil pressure gauges, fuel pressure gauges, capillary rear section of engines including driveshafts and thermometers, suction gauges, climb indicators, gears. Installs driveshafts, gears and oil pumps. manifold pressure gauges, and airspeed indicators. Tests operation of superchargers after overhaul. REMOTE CONTROL TURRET MECHANIC (960) Must be able to repair gear, clutch, and regulator sections incorporating two stage superchargers. Performs first and second echelon maintenance of remote control turret systems. Analyzes malfunc SUGGESTED SUBSTITUTES tioning of remote control turret systems. Isolates 684 Airplane Power Plant Mechanic malfunction to the elements or main assembly in 747 Airplane and Engine Mechanic complete system. Isolates within assembly to the individual part. Adjusts, repairs, or replaces faulty MECHANIC, AUTOMOTIVE, WHEEL VEHICLE part of assembly after location. Tests for proper (THIRD ECHELON) (965) functioning. Uses analyzing tools, meters, instru ments, and gauges, for location of fault. Automotive Assembler Replaces assemblies, turret parts, brushes, brush Automotive Repairman (AAF) riggings, contractors, relays, switches, selsyns, Performs medium (third echelon) field main sights and sight lamps, and all such parts which are tenance on all types of wheel and half-track • ve accessible and provided as squadron spares for hicles. first and second echelons of maintenance. Cleans, Makes unit replacements of major components of oils, greases, adjusts, inspects, and tests all ele vehicles. Overhauls accessory unit assemblies and ments of system. Levels, harmonizes, zeros, and subassemblies. Conducts recovery, evacuation, aligns system and guns. Tests computer settings tune-up adjustment, and trouble diagnosis. Per •and function. Tests system. Checks, inspects, and forms organizational maintenance on organic ve tests guns, power supply, control and safety devices, hicle of maintenance units. and other parts. Uses automobile mechanic's tools. AIRPLANE GYRO INSTRUMENT REPAIRMAN SUGGESTED SUBSTITUTE . (961) 966 Mechanic, Automotive, Track Vehicle (Third Performs third and fourth echelon overhaul and Echelon) 122 30 Jim 45 TM 12-427 C 2

MECHANIC, AUTOMOTIVE, TRACK VEHICLE to be taken in the handling and application of ex (THIRD ECHELON) (966) plosives. Should have good hearing in order to be able to Performs medium (third echelon) field mainte distinguish between the various sounds emitted by nance on all types of tanks, assault guns, and other the mine detecting apparatus as it approaches or full-track-laying vehicles. passes over mines. Makes unit replacements of major components of vehicles. Overhauls accessory unit assemblies SUGGESTED SUBSTITUTE and subassemblies. Conducts recovery, evacuation, 729 Pioneer tune-up, adjustment, and trouble diagnosis. Per forms organizational maintenance on organic ve SYNTHETIC TRAINER MECHANIC hicles of maintenance units. (DESIGNATED TYPE) (969) Uses automobile mechanic's tools. Inspects and maintains in operating condition a SUGGESTED SUBSTITUTE designated type training device. 965 Mechanic, Automotive, Wheel Vehicle (Third Cleans, lubricates, calibrates, adjusts, and tests Echelon) equipment to assure proper functioning. Locates trouble and corrects malfunctioning by repairing or AIR TRANSPORTATION TECHNICIAN (967) replacing defective parts. Uses wrenches, screwdrivers, pliers, and other Aircraft Loading Technician small hand tools or testing devices to maintain and Supervises the loading, unloading, balancing, service one or more of the following, depending tying down and stowing of cargo in aircraft and upon the type of trainer: electrical equipment, elec the operation of loading equipment. trical mechanisms, radio equipment, motion picture Weighs aircraft using either electrical scales, port equipment, sound equipment, photoelectric cells, and able, mechanical beam type, or fixed platform type. hydraulic, vacuum, or mechanical devices. Directs loading of cargo so as to maintain proper Must be familiar with the assembly, disassembly, balance of the aircraft and determines best method operation, and nomenclature of the designated type of tie down. trainer and its various parts. May execute manifests, airways bills and other Completion of an appropriate course in mainte forms required in connection with the movement of air freight and passengers. May assist the nance of a synthetic trainer of designated type or equivalent military experience required. Weight and Balance Officer of an AAF installation or assist the Officer-in-Charge of priorities and traffic SYNTHETIC TRAINER OPERATOR-INSTRUC in the Air Transportation Office at Air Freight Terminals. TOR (DESIGNATED TYPE) (970) Must have knowledge of procedures and forms Operates a synthetic training device and instructs employed in the Weight and Balance Control Pro students in the techniques of the subject for which gram and know the load limitations of all types of the trainer has been devised. aircraft. Checks equipment for proper functioning. Cleans Qualification of automotive equipment operator equipment and makes minor adjustments. Explains desirable. and demonstrates operating characteristics of the Completion of Weight and Balance Course or Air trainer. Assigns exercises and problems. Operates Transport Course or equivalent experience essen trainer while directing and supervising trainee in tial. the accomplishment of assigned exercises and prob MINE DETECTOR OPERATOR (968) lems and evaluates trainee performance. Must be thoroughly familiar with operation, use, Operates mine detecting equipment to determine capabilities, and limitations of the designated type the location of enemy planted antipersonnel and of trainer. Should be qualified in the subject and antitank mines. procedures in which the equipment trains students. Conducts searches of buildings, roads, and field, Must have knowledge of the operations, minor main vacated by the enemy, and marks with flags the spot tenance and wiring of sound equipment, motion or spots wherein mines are detected. picture projectors, photoelectric cells, and electri Must be able to detect carefully concealed booby cally or mechanically operated devices appropriate traps. Must be familiar with the safety precautions to designated equipment.

AGO 283A 123 TM 12-427 30 Jun 45 C 2

Completion of appropriate course in designated Prepares classified charts, graphs, and statistical type trainer operation and instruction at an Army tables with appropriate interpretations, to reflect school or equivalent military experience required. analysis of intercepted traffic relative to weaknesses or violations in radio traffic security. Prepares CHIEF ARTILLERY MECHANIC (973) radio control traffic to be interjected in transmissions Supervises, instructs, and coordinates enlisted of friendly stations. mechanics in repairing, overhauling, rebuilding, and Must have general knowledge of Signal Center testing all artillery materiel, electrical and non procedure and Joint Army-Navy procedure. Must electrical fire control instruments, shoulder weapons, have good knowledge of certain cryptographic equip machine guns and mortars in a fixed or mobile ment and procedures. Must have good knowledge military shop. of Army and Joint Army-Navy organization. Must Inspects equipment to determine extent and type be thoroughly familiar with principles of crypto of repair required. Assigns work to units or to in graphic and communication security. Must have dividuals. Inspects and tests completed work for cryptographic clearance. serviceability. Personally performs more difficult SUGGESTED SUBSTITUTE and complex repair work using mechanic's hand tools. Instructs personnel in use and maintenance 805 Cryptographic Technician of shop equipment and in technical aspects of repair. ARTILLERY MECHANIC, LIGHT ANTIAIR Supervises maintenance of shop records and requisi tions supplies, tools, and equipment. CRAFT (978) Must be able to read blueprints and lay out work Inspects, tests, and performs major repairs, unit from specifications, rough notes, and sketches. replacements of complete rebuilding of antiaircraft SUGGESTED SUBSTITUTE artillery of 40-mm or smaller caliber in a mobile or fixed artillery repair shop. 913 Artillery Mechanic, Light Determines causes of malfunctioning of equip 914 Artillery Mechanic, Heavy 915 Artillery Mechanic, Heavy Antiaircraft ment by visual inspection and by use of such testing 978 Artillery Mechanic, Light Antiaircraft devices as vernier calipers, pressure gauges, and spirit levels. RADAR REPAIRMAN, AN/TPT (DESIGNATED Using such hand and bench tools and equipment MODEL) (974) as hammers, screw drivers, various size socket and straight wrenches, hand power drill, block-and-tackle, Performs repairs and adjustments on radar and hoists, repairs and replaces defective assemblies AN/TPT or similar equipment of a designated of breechblock and firing mechanism, recoil and model. Supervises the assembly of antenna and counterrecoil systems, shock absorbing devices, and antenna-tuning equipment and performs initial traversing and elevating mechanisms. tuning. Aligns receivers and search equipment. Is adept in the use of precision, electrical and SUGGESTED SUBSTITUTES electronic instruments and devices; various types of 511 Armorer small hand and light machine tools. 802 Artillery Mechanic, Minor Maintenance Must be able to perform any third echelon repair, 903 Small-Arms'Weapons Mechanic adjustment, or replacement necessary to place the 913 Artillery Mechanic, Light equipment (and usual accessories) in excellent op erating condition, including overhaul or reclamation CHEMICAL WARFARE MAN, GENERAL (979) of equipment and parts, This classification is used to designate a chemical SUGGESTED SUBSTITUTE warfare soldier qualified by training to function in 955 Radar Repairman any type of CWS service unit. Airborne Equipment Assists in general defensive measures against (Designated Set) chemical attack, first aid measures for gas casualties, RADIO SECURITY TECHNICIAN (977) use of protective equipment, decontamination pro cedures, toxic gas handling, smoke generator opera Compiles and analyzes radio traffic data to pre tion, and first .and second echelon maintenance of pare reports on intercepted messages transmitted chemical warfare equipment. Assists in the classi over friendly communication facilities. fication and salvage of chemical warfare equipment,

124 AGO 283A 5 Feb 46 TM 12-127 C3 using small hand tools such as hacksaws, hammers, Makes special radio equipment installations in chisels and wrecking bars. PQ type targets, and checks and adjusts radio Must be familiar with field depot procedures, and equipment, including tubes and control boxes, prior with methods and equipment provided for the im to all missions. Tests equipment, using such instru pregnation of clothing. ments as voltmeter, ohmmeter, tube testers, and (Enlisted men classified under this SSN will re oscilloscope. Isolates and corrects defects either by ceive further training and development whenever repairing or replacing units such as resistors, con possible for assignment to duties requiring more densers, relays, stepper switches, and wiring, using specialized skills and knowledge.) small machine and hand tools. Accompanies con trol ship on missions to insure proper functioning of GRAVES REGISTRATION TECHNICIAN (980) control transmitters. Should have thorough working knowledge of Supervises activities of graves registration per radio equipment used in PQ type radio controlled sonnel and assists directly in the collection and target activities. identification of the dead and collection and disposi tion of personal effects found on the dead. SERVO MECHANIC, PQ TARGET AIRPLANE Supervises search of battlefields for unburied or (994) unsuitably buried dead and for isolated and un marked graves. Searches body and removes per Installs, maintains, and repairs all servo equip sonal property, recording inventory on proper forms ment in PQ (pilot carrying) type radio controlled and forwarding to collecting points. Supervises target airplanes, and repairs mechanical parts of removal of the dead and burial in the nearest estab airplane. lished cemetery, exhausting every means of identi Assists pilot in initial servo adjustment in target, fying unknown bodies. When conclusive evidence replaces faulty gyros and overhauls and trouble- of identity is not found, takes fingerprints or pre shoots all servo equipment including linkages. pares a tooth chart and ascertains other anatomical Services and maintains automatic pilot equipment. characteristics. Records accurate physical descrip Replaces torn fabric on plane surface, using canvas tion on appropriate forms, giving all the anatomical and fabric dope. Using mechanic's hand tools, characteristics which might be of aid in makes minor repairs to, or replaces parts of, fuse identification. lage, landing gear, or other plane accessories. May assist in the selection and planning of ceme Diagnoses and corrects engine or other operating tery sites and in their beautificatioh and mainte parts. nance. May make topographical sketches. Should be familiar with airplane and engine and May arrange for the conduct of religious services automatic pilot equipment maintenance. Comple and the rendering of military honors. tion of radio control target training essential. Must have knowledge of military funeral procedures. ROTARY WING MECHANIC (HELICOPTER) Completion of a course of apprentice embalming (995) or practical experience in the preparation of bodies for burial under the supervision of a licensed em- Inspects, maintains and makes major and minor balmer is desirable. repairs of all types on rotary wings and related assemblies. SUGGESTED SUBSTITUTES Repairs and replaces parts of main rotor head and 409 Medical Technician 855 Dental Assistant blades, main gear box, tail rotor, gear head and 657 Medical Aidman 861 Surgical Technician blades, clutch and free wheeling, fan assembly, flight 673 Medical NCO controls and supporting framework. Performs re quired inspections on above items, noting and cor RADIO MECHANIC, PQ TARGET AIRPLANE recting all defects. May make dope and fabric (993) repairs to rotor blades and parts. Completion of a course in Rotary Wing Mainte Installs, tests, and maintains all radio .equipment nance at an Army School in addition to qualifica in airplanes, control ships, and control trucks tions as either an airplane and engine mechanic or equipped with PQ (pilot carrying) type remote airplane propeller specialist or equivalent experience control equipment. is required.

AGO 3006A 125 TM 12-427 5 Feb 46 C3

AIR TRAFFIC SERVICE TECHNICIAN (996) Plots flash or sound locations as they are relayed from the flash switchboard operator or as they are Assists in the operation and administration of an read from the sound film. Air Traffic Control Center and under direct super Uses ordinary drafting tools such as compass, pro vision of an Air Traffic Service Officer, issues in tractor, dividers, triangles, plotting fan, scales, and structions, advice, or information to aircraft oper slide rule. ating on controlled military air routes. Must be able to read maps and aerial photographs. Receives and records flight plans, flight progress Must be able to read oscillograph films. Should be reports, and arrival and departure reports concern able to perfc :m field survey operations and compute ing aircraft within the controlled area, forwarding survey problems such as azimuth and distance. such data via existing communication facilities to the appropriate aircraft operating agency, airdrome SUGGESTED SUBSTITUTE control tower, radio station, or individual Air Traffic 230 Surveyor, Topographic Control Center. Receives reports by telephone, in terphone, teletype, or other means of communication REPEATERMAN, FIXED PLANT (1187) from operations offices, weather reporting stations, airport control towers and air-ground communica Installs, adjusts and maintains fixed plant type tion stations, prepares traffic instructions for aircraft (including packaged) repeater and carrier equip in flight on military air routes and obtains and posts ment used in a military long lines wire communica reports from such aircraft in accordance with estab tion system. lished operating procedures. Monitors required air Assembles and installs fixed plant type (including traffic clearances and special instructions and ad-' packaged) repeater and carrier units in accordance vises the Air Traffic Service Office as to points of with circuit and lay-out diagrams. Tests circuits anticipated traffic congestion. Notifies appropriate and equipment for faulty operation. Makes various rescue services regarding aircraft in distress. types of tests such as measurements of transmission Must have knowledge of Air Traffic Control pro gains or losses and line resistances. Makes operat cedures and practices governing controlled military ing adjustments on fixed plant type (including pack air routes, current air traffic rules, aerial naviga aged) repeater and carrier units to produce proper tional facilities available, performance data concern gains, levels, balances, and equalization as pertain ing modern aircraft, and types of terrain located on to amplified signals and creation of additional com or adjacent to air routes. Must be able to interpret munication channels. Locates, diagnoses, and clears and use weather symbols, reports and forecasts and trouble by making necessary repairs (including im establish and maintain defined traffic patterns for provisations) , replacements, or substitutions. the separation of air traffic on the air routes. Must Uses electrician's small hand tools and test in-, be able to calculate the speeds of aircraft flying on struments. a controlled air route, estimate the time of arrival Must have knowledge of more common types of of such aircraft over the various reporting points, telephone switchboard circuits. Must understand and make the necessary revisions of estimates based theory of fixed plant type (including packaged) re on additional flight reports. peater and carrier units. Completion of a prescribed AAF course for Air Must be a qualified Repeaterman, Field (SSN Traffic Service Technicians or equivalent experience 187). essential. Military experience as a Control Tower Operator, or Air Operation Specialist desirable. PERSONAL AFFAIRS CONSULTANT (1274) Civilian experience as an Air Traffic Controller or communicator with the Civil Aeronautics Admin Under general supervision of a Personal Affairs istration or a dispatcher or pilot for a commercial Officer, assists in accomplishment of the Personal air carrier desirable. Affairs mission. Interviews or assists in the interviewing of mili OBSERVATION DRAFTSMAN (1076) tary personnel concerning their personal and finan cial affairs and maintains these affairs in a current Operates a mechanical or improvised drafting status. Disseminates information, renders advice, board used in field artillery flash or sound plotting. and gives assistance pertinent to the rights and bene Lays out grid on plotting board according to fits provided to military personnel and their depend scale and plots meter data such as the position of ents, honorably discharged personnel and their de sound microphones or flash observation posts. pendents, and beneficiaries and dependents of de-

AGO 3006A 5 Feb 46 TM 12-427 C3 ceased or missing personnel. Maintains records of operation over terrain where other types of field personal affairs and action taken and submits re artillery cannot maneuver. ports as required. May assist in the administra Performs one or more of the following operations tion of Army Emergency Relief. May prepare and during the firing mission: Sets horizontal angle report casualty information. from established position by means of panoramic Must have a thorough knowledge of regulations sight, and manipulates gun traversing hand wheel and policies pertaining to such matters as govern to lay" gun on target. Makes additional changes in ment and commercial life insurance, allowances and deflection as directed. Sets target range on range allotments for dependents, war bonds, public rec drums and target angle of site on angle-of-site scale. ords, powers of attorney, wills for military personnel Opens and closes breech. Carries, inspects, cleans, and their dependents, income tax obligations, legal and passes ammunition. Attaches fuze to projectile, assistance and government benefits, as well as gov using fuze wrench, and sets fuze for quick, delayed, ernmental and nongovernmental agencies having or time action, using fuze setter. Loads piece by the responsibility for the adjudication of such rights hand, pushing round into breech until it is firmly and benefits. Must be reasonably expert in dis seated. Fires piece by pulling hand lanyard. Re pensing such information and be adept in guiding moves unfired rounds or cartridge cases which can and assisting in such matters. Must have ability not be ejected by extractor, using rammer and ram to meet and deal with people, and should have knowl mer staff. Inspects bore and swabs with water. edge and sympathetic understanding of the personal Cleans breech. Prepares piece for transportation problems of individuals. Must be able to supervise by disassembling, packing, and slinging on mules and coordinate personal affairs program in the ab equipped with specially designed pack saddles. As sence of a regularly assigned Personal Affairs sists in such maintenance operations as cleaning, Officer. oiling, and rustproofing of vital parts of gun. As Completion of a prescribed course of training in sists in care of animals and maintenance of equip personal administration at an Army School or ment. equivalent training and experience essential. At supervisory level is responsible for control Successful civilian experience in personnel man coordination, and tactical employment of pack ar agement, industrial or public relations, individual tillery and crew members. practice of law, life insurance sales, advertising, Must be able to pack the necessary equipment, business management, or investment and banking cargo, and materiel on pack animals using a variety is highly desirable. of knots such as single diamond, double diamond, GUN CREWMAN, PACK ARTILLERY (1531) and squaw hitch, to secure the load. Must be above average in strength and at least 5 feet 10 inches in Ammunition Handler Cannoneer height. Ammunition Noncom- Gunner SUGGESTED SUBSTITUTES missioned Officer As a member of a 75-mm pack artillery gun crew, 505 Ammunition Non 608 Gun Crewman, assists in disassembling, moving, assembling, em- commissioned Coast Artillery placing, firing, and withdrawing piece in combat Officer 712 Packer, Animal

AGO 3006A 12 6 A 30 Jun 45 TM 12-427 C 2

844 Gun Crewman, Gun Crewman, prove lateral or vertical accuracy of fire. Observes Light Artillery Medium Artillery target through open sight on director tracker, throw 845 Gun Crewman, 873 Gun Crewman, ing in azimuth sleeving clutch to "turn tracker so Heavy Artillery Heavy Artillery that telescopes will be directed toward the target. (Multiple Load) (Single Load) Repeats operation with every change of target. As 901 Munitions Worker an altitude or range setter on converter changing slant range altitude, moves dial to match :index con HEAVY MORTAR CREWMAN (1607) trolled by height finder or position finder. Oper ates and observes target rate indicator at computer, Ammunition Bearer setting dials as needed. Sets corrections on com Instrument Noncommissioned Officer puter to compensate for known errors in transmitted Mortar Assistant data. Matches pointers on director, setting range Mortar Gunner or altitude, or correcting fuze data. Spots and As member of 81-mm or 4.2-inch mortar crew, tracks targets and reports back readings^ Orients sets up, aims, and fires weapon from carrier or gun, height finder, and director. Observes shell ground mount, to place explosive, toxic gas. shells, bursts during firing and reports range corrections or smoke on enemy positions. by field telephone. Starts motor, regulates speed Emplaces mortar and sights in on aiming stake. of engine, and checks operation gauges. Services Adjusts mortar for elevation and deflection. Uses motor and makes minor repairs. firing tables to determine necessary charge and ad May set up, orient, and level B/C telescope 1 to 3 justs charge of mortar shell by removing necessary miles distance from gun position.. May operate number of increments to give correct auxiliary pro portable power generator furnishing power for range pelling force. Fires weapon by dropping shell into section. May drive truck. • mortar to strike firing pin. Drives vehicle. At supervisory level is responsible for control, RADIO REPAIRMAN, AN/MRQ (DESIGNATED coordination, and tactical employment of mortar MODEL) (1648) erews. Must be able to estimate range and deflection Performs repairs and adjustments on a designated model of radio AN/MRQ or similar equipment that rapidly and accurately. are beyond the capabilities of the radio repairman SUGGESTED SUBSTITUTE (SSN 648). Supervises the assembly of antenna and antenna tuning equipment. Aligns receivers, 607 Light Mortar Crewman including amplitude .and frequency modulated equipment. RANGE SECTION OPERATOR, ANTIAIRCRAFT Is adept in the use of precision electrical' and (1645.) electronic instruments and devices; various types of ' Director Operator small hand and light machine tools. Observer. Director Must be able to make any repair, adjustment, or Portable Power Generator Operator, Antiaircraft replacement necessary to place the equipment (and Artillery Gun usual accessories) in excellent operating condition, As a member of a range section, performs one or including overhaul or reclamation of equipment more duties incident to operation and maintenance and parts. of equipment and instruments used in connection SUGGESTED SUBSTITUTE with electrical or mechanical collection and compila tion of firing data for an antiaircraft gun or battery 648 Radio Repairman of guns. AIRPLANE POWER PLANT MECHANIC- Assists in unloading equipment, including com GUNNER (1684) puter, tracker, power unit, tripod, altitude converter, s and cable system. Sets up and levels equipment at In connection with the inspection and repair of designated, locations and connects power cables. airplanes, observes operation of airplane power Operates as an azimuth or elevation tracker on plants and makes necessary repairs within limita director, following target with telescope by manipu tions of available tools and equipment. Fires aerial lating handwheels in such a way as to obtain a machine guns on combat missions. smooth tracking rate. Observes bursts of shells Diagnoses power plant malfunctioning and oper with reference to target, adjusting director to im- ating difficulties which cannot be corrected by or-

AGO 283A 127 TM 12-427 30 Jun 45 C 2 ganization airplane and engine mechanics. Adjusts ates radio to maintain communication with other and repairs such features of power plant as carbu elements. Fires the weapons of the .vehicle, includ retors, superchargers, injectors, fuel and oil pumps, ing cannon and machine guns, to destroy enemy and ignition units. Makes unit replacements of personnel, lines of communication, vehicles, pill defective power plant parts. boxes, and other targets, and to protect the vehicle Uses such tools as wrenches, screw drivers, pliers, against attack. Inspects and checks engines, oil and portable testing equipment. levels, innerphone headset communication, radio, Must be familiar with the principles of operation vehicle operating equipment, turret mechanism, and methods of repairing airplane power plant tracks, bogie wheels, ammunition, and weapons. equipment. Cleans and services .30- and .50-caliber machine guns and cannon, and bore-sights cannon. SUGGESTED SUBSTITUTE At supervisory level, is responsible for control, 684 Airplane Power Plant Mechanic coordination, and tactical employment of tank and 747 Airplane and Engine Mechanic crew members. Must have -ufficient knowledge of the tactical em AIRPLANE ELECTRICAL MECHANIC-GUNNER ployment of light armored vehicles to be able to (1685) anticipate commands, take advantage of cover, and maneuver to obtain targets and secure good observa Inspects and makes repairs to aircraft electrical tion positions in reconnaissance. Must be skilled equipment excluding radio transmitters and receiv in entering and leaving vehicle under combat con ers and aircraft instruments. Fires aerial machine ditions and capable of fighting with hand weapons guns on combat missions. when dismounted. Must be familiar with the prin Examines electric wiring, auxiliary electric mo ciples of armored reconnaissance. Must be able to tors, ignition systems, and lighting units for proper employ the gunnery techniques of direct and in functioning. Uses a combination electrical con direct fire on moving and stationary targets. tinuity tester or ohmmeter, ammeter, and voltmeter to locate short circuits and to test currents and re SUGGESTED SUBSTITUTES sistances. Traces circuits with aid of blueprints. 610 Antitank Gun Crewman Tightens and solders loose electrical connections. 660 Tank Mechanic, Minor Maintenance Cleans, repairs, and replaces electric motors, ignition 733 Reconnaissance Car Crewman units, recognition and landing lighting units, relays, 844 Gun Crewman, Light Artillery junction boxes, and other related equipment. 2736 Medium Tank Crewman Uses such tools as screw drivers; wrenches; wire cutters; file; and pliers. RADIO OPERATOR, AN/MRQ (DESIGNATED Must be familiar with aircraft electrical systems MODEL) (1766) and with basic electrical theory. Must be able to read blueprints. Operates a designated model of radio AN/MRQ or similar transmitting and receiving equipment. SUGGESTED SUBSTITUTES Operates equipment by manipulating tuning or 078 Electrician operating controls in coordination with signals or 611 Aerial Gunner instructions received from a control station. Assists 747 Airplane and Engine Mechanic in the installation of equipment, antenna, power 685 Airplane Electrical Mechanic units, transmitters, receivers, and telephone lines. Receives International Morse Code at a speed suffi LIGHT TANK CREWMAN (1736) cient to differentiate between friendly and enemy signals. Ammunition Handler Loader Uses small hand tools in performing maintenance Assault Gun Crewman Radio Tender and repair work which consists of inspecting, dust Bow Gunner Tank Commander ing, and oiling equipment; making simple repairs, Cannoneer Tank Driver adjustments, and replacements of parts such as fuses, Gunner Tank Gunner filters, pilot lights, batteries, and tubes. As member of crew of a light tank or light tank- Must be a qualified high speed manual radio mounted assault gun used in the attack of enemy operator (SSX 766). positions, performs one or more of the following duties: Drives the vehicle to secure maximum fire SUGGESTED SUBSTITUTE effect without undue exposure to enemy fire. Oper- 766 Radio Operator, High Speed, Manual

128 AGO283A 30 Jim 45 TM 12-427 C 2 LIGHT WEAPONS NCO (1812) available facilities for presentation of films, ex hibits, lectures, group instruction, and radio broad Supervises activities of a light weapons unit, casts. Assists in maintenance of a library of cur comprising light (30-caliber) machine guns and rent information material and of the War Informa light (60-mm) mortars, to provide fire power in tion Center. Assists in the organization and de support of other tactical units in attack and defense. velopment of off-duty and duty-time Army educa Selects positions for weapons, taking advantage tion programs. Assists military personnel in the of cover and concealment. Furnishes firing data preparation of enrollment applications for corre such as range and deflection. Deploys unit as the spondence, self teaching and university extension tactical situation demands. courses available through the United States Armed Must be familiar with firing problems in difficult Forces Institute and in the development of class pro terrain. Must be capable of rapidly and accurately grams and discussion groups. estimating range and angle of fire. Must be fa Must possess as least a moderate understanding of miliar with use of compass, map reading, and range educational requirements of American public school computation from firing table. systems. Must be familiar with the process of SUGGESTED SUBSTITUTES accrediting military educational experience. Must be able to train others. 604 Light Machine Gunner Must be well acquainted with facts concerning 607 Light Mortar Crewman the causes, issues and course of the war. Should be able to evaluate the quality'of various published ma GYROSTABILIZER MECHANIC (1907) terials proposed for use in the local orientation, Maintains, adjusts, and makes major repairs on information and education program of his unit. gyrostabilizers used in various model tanks and Must possess ability to speak well and present views other combat vehicles. clearly and convincingly without being dogmatic. Determines causes of malfunctioning by visual Graduation from the Information and Education examination or test operation. Disassembles unit Course, School for Personnel Services, Lexington, and replaces or repairs worn or broken parts. Virginia, is desirable. Reassembles, lubricates, and tests unit to assure College or high school graduation with particular satisfactory operating condition. interest in social and political science, journalism, Must have knowledge of the various kinds of education or psychology is desirable. mountings and balancing of guns. Must understand Civilian experience in writing, public speaking, the operation of Homelite generators mounted in advertising, law, salesmanship, journalism, or edu tanks employing gyrostabilizers. cation is desirable. SUGGESTED SUBSTITUTE ANTIAIRCRAFT ARTILLERY GUN CREWMAN 907 Mechanic, Turret (2601) Ammunition Handler Cannoneer INFORMATION-EDUCATION SPECIALISTS Antiaircraft Artillery Fuze Setter (2274) N o n - commissioned Gunner, Antiaircraft Under general supervision of the Information- Officer, Gun Machine Gunner Education Officer assists in the planning, production As a member of gun crew performs one or more and dissemination of materials and programs for of the following tasks incident to firing and main the information, orientation and non-military edu tenance of a fixed or mobile 90-mm, 120-mm, or cation of troops. similar size gun used for protection of combat ele Prepares material for, and personally conducts ments or strategic areas from enemy aircraft, group discussions in current news developments, mechanized forces, or small naval vessel. the progress of current military campaigns and the Examines gun for proper mechanical functioning. war as a whole, the relations of the United States Unloads projectiles from trucks, inspects projectiles with it allies, known information about the enemy, and fuzes for defects, brings up ammunition from and in the particular significance of the individual prime mover or ammunition dump to rear of em soldier's participation in the war. Writes digests placement, passes shells to loader, inserts shells in of background material and delivers lectures. Pre fuze cutter, loads into breech, or removes empty pares orientation material for posts, camps and shells from gun position. Operates fuze setter, stations and for unit newspapers. Assists in making turning crank on setter and automatically adjusting 129 TM 12-427 30 Jun 45 C 2 fuze ring on shell to desired setting, or turns hand- Cleans and services .30- and .50-caliber machine wheel keeping pointer on fuze setting dial matches guns and cannon, and bore-sights cannon. with pointer electrically controlled from fire con At supervisory level, is responsible for control, trol director. Rams home shell in breech, fires coordination, and tactical employment of tank and pieces and watches for misfires. Turns liandwheels crew member. electrically moving gun in azimuth and elevation, Must have sufficient knowledge of tactical employ keeping pointers on azimuth and elevation dials ment of armored vehicles to be able to anticipate aligned with pointers electrically controlled from commands, take advantage of cover, and maneuver director, thus maintaining synchronization between to obtain targets. Must be skillful in entering and gun and director. When firing with direct sights leaving vehicle under combat conditions and ca tracks target and operates either azimuth or eleva pable of fighting with hand weapons when dis tion handwheel mechanically operating gun. Per mounted. Must be familiar with gunnery techniques forms maintenance tasks on piece including greasing of direct and indirect fire. and oiling, and cleaning breech and bore. SUGGESTED SUBSTITUTES In a mobile crew, assists in unloading, unlimber- ing, emplacing, and preparing gun for action by 660 Tank Mechanic, Minor Maintenance installing and unfolding outriggers, leveling jacks, 844 Gun Crewman, Light Artillery and inspecting breech and working mechanisms, 1736 Light Tank Crewman and in restoring piece to traveling position after firing. AERIAL ENGINEER (2750) At supervisory level, is responsible for control Assists airplane commander in the operation of of operations and tactical employment of gun crews a multiple engined airplane in flight by maintaining and guns. a constant check on its mechanical functionings. Should be acquainted with mechanical function Notes readings on engine (vacuum and pressure ing and tactical use of gun, the reduction of stop instruments). Maintains a log of engine perform pages, and should be familiar with duties of all ance including fuel flow and fuel remaining in tanks members of the crew. during flight. Reports any indication of mal SUCGFSTEr SUBSTITUTES functioning. Maintains a record of the malfunc tioning of engines and their components. Makes 608 Gun Crewman, Coast Artillery limited repairs and mechanical adjustments while 610 Antitank Gun Crewman in flight. 844 Gun Crewman, Light Artillery Assists in inspection and repair. Makes final MEDIUM TANK CREWMAN (2736) check of the inspection and repairs accomplished. Assists the commander in decisions as to airworthi Assault Gun Crewman, Loader ness of the airplane. Medium Radio Tender Must have thorough knowledge of airplane and Bow Gunner Tank Commander engine maintenance and operation. Cannoneer Tank Driver Must be physically qualified for flight duty to be Gunner Tank Gunner classified in this MOS.

As member of crew of a medium tank or medium SUGGESTED SUBSTITUTES tank-mounted assault gun used in the attack of 684 Airplane Power Plant Mechanic enemy positions, performs one or more of the fol 747 Airplane and Engine Mechanic lowing duties: Drives the vehicle to secure maxi 750 Airplane Maintenance Technician mum fire effect without undue exposure to enemy fire. Operates the radio to maintain communica RADIO OPERATOR-MECHANIC, AAF (2756) tion with other elements. Fires weapons of vehicle, including cannon and machine guns, to destroy Operates and maintains airborne transmitting and enemy personnel, lines of communication, vehicles, receiving equipment. Sends and receives messages pill boxes, and other targets, and to protect vehicle using letters and numerals of the International against attack. Inspects and checks engine, oil Morse Code, CW, ICW, tone or light signals in the levels, innerphone headset communication, radio, same code. vehicle operating equipment, turret mechanism, Receives International Morse Code signals copy tracks, bogie wheels, ammunition, and weapons. ing by hand-printing at a minimum speed of 16

130 AGO 283A 30 Jun 45 TM 12-427 C 2 five-letter random code groups per minute without Must be familiar with tie-down systems and error for a minimum period of 3 consecutive minutes proper placement of cargo in cabin to insure safe out of 5. loading and unloading. Transmits International Morse Code signals, using hand key, at a minimum speed of 16 five-letter ran ANTIAIRCRAFT ARTILLERY AUTOMATIC dom code groups per minute without error for a WEAPONS CREWMAN, SP (3601) . minimum period of 2 consecutive minutes out of 3. Handles without error, a minimum of 15 plain- As a member of a self-propelled antiaircraft artil dress normal form messages (averaging 10 five-letter lery gun crew, performs one or more of the following code groups of text) per hour in a field radio net duties incident to firing and maintenance of a self- of two or more stations through interference. propelled machine gun, 37- or 40-mm gun, or similar Normally operates airground, changing frequen automatic piece used., for protection of combat ele cies as.required. Tunes radio equipment accurately ments or strategic areas from enemy aircraft or and quickly to any required frequency covered by mechanized vehicles. coils and installed equipment. Maintains calibra Using telescope or reflex sight, tracks targets in tion charts, revising transmitter tuning data as nec elevation or azimuth by manually manipulating essary. Must possess a thorough working knowl hand wheels or by power controlled turret. As edge of combined radiotelephone, radiotelegraph, elevation tracker fires gun by means of foot or hand and authentication procedures. Should be familiar controls. Applies leads to sighting system and ad with commonly used low grade cryptographic equip justs fire to obtain hits. Repeats commands of the ment and systems. Receives and transmits by light squad leader and assists in coordinating duties of signals at a minimum speed of five words per minute. squad members. Keeps squad leader informed as Maintains station logs and message files. to status of ammunition. Initiates action through Performs necessary flight maintenance on air squad leader for replenishment of ammunition, fuel, borne radio equipment used throughout the Army oil, and water. Services gun or machine gun, pre Air Forces. Makes required periodic inspections of paring and feeding ammunition, watching for stop radio equipment. Keeps equipment clean, inspects pages, and immediately eliminating their causes. antenna systems, cords, plugs, telegraph key, and Maintains sights, sighting systems, tracking mecha control switches and makes all necessary adjust nism, gun arid machine gun in good working order. ments. Tests all Army Air Forces' radio equipment May operate radio or drive vehicle on which weapon customarily installed on military aircraft, such as is mounted. receivers, transmitter, power supply auxiliaries and At supervisory level commands a squad or gun accessories, changing tubes, or tuning coils and section and is responsible for emplacement, conduct making minor repairs to equipment as necessary. of fire and fire adjustment while engaging targets. Must be physically qualified for flight duty. Should be familiar with duties of all members of crew. •

FLIGHT TRAFFIC CLERK (2967) SUGGESTED SUBSTITUTE .... As member of the crew of a transport airplane, 601 AAA Automatic Weapons Crewman performs various duties in connection with handling of passengers, loading and unloading of cargo, and AMPHIBIAN TANK CREWMAN (3736) maintenance of records pertinent to flight. Shares responsibility for maintenance of cabin Ammunition Handler Radio Tender discipline among passengers and security and safety Assault Gun Crewman Tank Commander of passengers and cargo. Distributes meals to pas Cannoneer Tank Driver sengers and crew members. Takes appropriate Gunner Tank Gunner measures for protection of cargo and equipment, Loader guarding against pilferage and unauthorized diver As member of crew of an amphibian tank used sion of cargo. Collects passenger's transportation in the attack of enemy positions to establish beach requests, checks loading and unloading of cargo, heads and in other like operations, performs one or passengers, and passenger's baggage. Has custody more of the following duties. Drives the vehicle to of all traffic forms and prepares papers required by secure maximum fire effect without undue exposure customs authorities. Serves as courier for classified to enemy fire. Operates radio to maintain com mail and cargo. munication with other elements. Fires the weapons May jettison cargo when so instructed. of the vehicle, including cannon and machine guns,

AGO 283A 130A TM 12-427 30 Jun 45 C 2 to destroy enemy personnel, lines of communication, visual signaling (blinker), and international "Q" vehicles, pill boxes, and other targets, and .to protect signals. Must be familiar with commercial radio the vehicle against attack. Inspects and checks en and telephone accounting. gines, oil levels, innerphone headset communica Must be qualified as Radio Operator, High Speed, tion, radio, vehicle operating equipment, turret Manual (SSN 766). mechanism, tracks, bogie wheels, ammunition, and weapons. Cleans and services .30- and ,50-caliber machine guns and cannon, and bore-sights cannon. TRAFFIC ANALYST G (6709) Must have sufficient knowledge of the tactical Performs traffic analysis duties on radio traffic employment and operation of amphibian tanks to be intercepted from the German military communica able to anticipate commands, take advantage of tions system. available cover on land, and maneuver to secure best Assists in editing, preparing, logging, and tabu fields of fire. lating communications traffic, and in controlling SUGGESTED SUBSTITUTES activities of intercept agencies to obtain maximum 2736 Medium Tank Crewman amount of intercept coverage. Reconstructs com 1736 Light Tank Crewman munication networks by graphic triangulation based on statistical tabulation of call signs,. operating RADIO OPERATOR (MARINE) (3766) procedures, frequency tables, and traffic analyses. May deduce and extract information of military Operates radio transmitting and receiving equip value from intercepted traffic without recourse to ment aboard a ship. cryptanalysis of the text. Copies transmissions, received via CW (continu Must have cryptographic clearance. ous wave) or ICW (interrupted continuous wave) Must be familiar with radio call signs and oper signals, addressed to his vessel, or to the zone and ating procedure. Knowledge of Army organiza area in which the ship is located; sends messages tion, the German language, cryptography, and via CW or ICW signals, using either a hand-key or geography desirable. vibroplex; sends and receives messages via visual "blinker" signals; checks logs and number sheets SUGGESTED SUBSTITUTE each day and prepares voyage and other reports on 738 Intercept Operator G operation of the radio station. Receives CW or ICW signals (copying by type TRAFFIC ANALYST J (8709) writer) at a minimum speed of 25 words per minute enciphered text, or 30 words per minute plain text. Performs traffic analysis duties on radio traffic Transmits CW or ICW signals at a minimum rate intercepted from the Japanese military communica of 20 words per minute using hand key or 25 words tion system. per minute using Vibroplex. Assists in editing, preparing, logging, and tabu Handles without error, a minimum of 15 plain lating communications traffic, and in controlling dress normal form messages (averaging 40 five- activities of intercept agencies to obtain maximum letter random code groups of text) per hour in an amount of intercept coverage. Reconstructs com Army radio net. munication networks by graphic triangulation based Receives and transmits messages by light signaF on statistical tabulation of call signs, operating (blinker) at 'a minimum speed of 5 words per procedures, frequency tables, and traffic analyses. minute. May deduce and extract information of military Performs hrst echelon maintenance by keeping value from intercepted traffic without recourse *" equipment clean, inspecting cords, plugs, antenna cryptanalysis of the text. mast, receivers, transmitters, storage batteries, auto Must have cryptographic clearance. . • alarm apparatus and calibration charts; using simple Must be familiar with radio call signs and oper hand tools makes such minor repairs as testing and ating procedure. Knowledge of Army organiza replacing worn or damaged tubes and adjusting key. tion, the Japanese language, cryptography, and Must have knowledge of Army and commercial geography desirable. radio procedure, FCC regulations pertaining to dis tress, medical, and weather messages, taking of radio SUGGESTED SUBSTITUTE bearings, time signals, radio navigational warnings,. 739 Intercept Operator J

130B AGO 283A 30 Jim 45 TM 12-427 C 2

CAVALRY TROOPER (9745) weapons when necessary to clean or replace parts. At supervisory level, is responsible for control and Loads, aims and fires combat weapons such as coordination of troop units and tactical employment rifles, heavy machine guns and 81-mm mortars used of weapons. by cavalry rifle and heavy weapons troops in sup Must be capable of making rapid and accurate port of other tactical units, harassing enemy troops range estimation, and determining the speed of mov and positions, and in defense against enemy action. ing targets. Must be able to use hand weapons Estimates range, sets sights and adjusts weapon including carbine, pistol, bayonet, trench knife, and for firing. Fires weapon at fixed or moving targets, hand grenades. using either direct or indirect fire. Field strips

AGO 283A 130C Section V Alphabetical Index of Military Occupational Specialties

A SSN P»e= ssit P«I« Able Seaman ...... 065 27 AIRPLANE ENGINE REPAIRMAN ...... 762 97 Account Clerk ...... 055 25 Airplane Fabric and Dope Worker...... 548 72 Acetylene and Oxygen Plant Operator...... 719 90 Airplane Flight Chief ...... 750 95 Acetylene Welder ...... 256 49 AIRPLANE GYRO INSTRUMENT REPAIR Actor ...... 442 63 MAN ...... 961 122 Addressing-Embossing Machine Operator..... 405 66 Airplane Handler ...... 590 76 Administrative Inspector ...... 502 67 AIRPLANE HYDRAULIC MECHANIC .... 528 69 ADMINISTRATIVE NONCOMMISSIONED Airplane Inspector ...... 750 95 OFFICER ...... 502 67 Airplane Inspector (Third and Fourth Echelon Administrative Specialist (AAF)...... 502 67 Repair) ...... 925 117 Administrative Specialist, Medical (AAF)... 673 86 AIRPLANE INSTRUMENT MECHANIC... 686 88 Administrative and Technical Clerk...... 405 60 Airplane Line Chief ...... 750 95 AERIAL ENGINEER ...... 2750 128 AIRPLANE MAINTENANCE TECHNICIAN 750 95 Aerial Engineer-Gunner ...... 748 94 AIRPLANE MECHANIC-GUNNER ...... 748 94 AERIAL GUNNER ...... 611 79 AIRPLANE MECHANICAL INSTRUMENT AERIAL MINE TECHNICIAN ...... 582 76 REPAIRMAN ...... 959 122 AERIAL PHOTOGRAPHER ...... 940 119 Airplane Motor Mechanic, Target...... 014 21 AERIAL PHOTOGRAPHER-GUNNER ...... 939 119 AIRPLANE PILOT ...... 770 98 Aerial Photographic Laboratory Technician.. 945 119 AIRPLANE POWER PLANT MECHANIC.. 684 87 AERIAL PHOTOTOPOGRAPHER ...... 004 21 AIRPLANE POWER PLANT MECHANIC AERIAL TORPEDO MECHANIC...... 662 84 GUNNER ...... 1684 126 Agent, Counterintelligence ...... 301 55 AIRPLANE PROPELLER MECHANIC ..... 687 88 Agent, Liaison or Reconnaissance...... 761 96 Airplane Radiator Repairman...... 555 72 Agent, Purchasing ...... 371 59 AIRPLANE SHEET METAL WORKER.... 555 72 Air Compressor Operator...... 081 29 AIRPLANE SUPERCHARGER REPAIR AIR OPERATIONS SPECIALIST ...... 791 100 MAN ...... 964 122 AIR TRANSPORTATION TECHNICIAN ... 967 123 Airplane Target Motor Mechanic...... 014 21 Airbrake Mechanic ...... 048 25 Airplane Target Parachute Packer...... 522 69 Aircraft Engineering Chief...... 925 117 AIRPLANE WOODWORKER ...... 550 72 AIRCRAFT ENGINEERING TECHNICIAN. 925 117 Airport Control Tower Operator...... 552 72 Aircraft Equipment Radio Repairman...... 647 87 ' ALTITUDE CHAMBER TECHNICIAN...... 617 80 Aircraft Observer, Ground ...... 518 68 Ambulance Driver ...... 345 57 Aircraft Warning Filterer ...... 510 67 Ambulance Orderly ...... 345 57 Aircraft Warning Ground Observer (AAF)... 518 68 Ambulance Orderly, Veterinary ...... 700 88 Aircraft Warning Noncommissioned Officer... 510 67 Ammunition Bearer, Antitank ...... 610 79 Aircraft Warning Plotter ...... 510 67 Ammunition Bearer, Automatic Rifle ...... 746 94 Aircraft Warning Plotting Board Installer- Ammunition Bearer, Heavy Machine Gun.... 605 78 Repairman ...... 097 31 Ammunition Bearer, Heavy Mortar ...... 1607 125 Aircraft Warning Teller...... 510 67 Ammunition Bearer, Light Machine Gun..... 604 78 Aircraft Welder ...... 573 74 Ammunition Bearer, Light Mortar ...... 607 78 AIRPLANE AND ENGINE ELECTRICAL Ammunition Bearer, Rifle ...... 745 94 ACCESSORIES REPAIRMAN ...... 958 122 Ammunition Chief, Antiaircraft Artillery, AIRPLANE AND ENGINE MECHANIC.... 747 94 Gun ...... 2601 127 AIRPLANE ARMORER ...... 911 114 Ammunition Chief, CA ...... 608 78 AIRPLANE ARMORER-GUNNER ...... 612 79 Ammunition Chief, Submarine Mine ...... 656 83 AIRPLANE CABLE MECHANIC ...... 689 88 Ammunition Handler (see Munitions Worker) 901 112 AIRPLANE CARBURETOR REPAIRMAN.. 956 121 Ammunition Handler, Amphibian Tank .....3736 129 Airplane Control Tower Operator...... 552 72 Ammunition Handler, Antiaircraft Artillery, 77 Airplane Crew Chief ...... 750 95 Automatic Weapons ...... 601 AIRPLANE ELECTRICAL INSTRUMENT Ammunition Handler, Antiaircraft Artillery, 127 MECHANIC ...... 957 121 Gun ...... 2601 AIRPLANE ELECTRICAL MECHANIC.... 685 87 Ammunition Handler, Heavy Artillery ...... 845 108 AIRPLANE ELECTRICAL MECHANIC- Ammunition Handler, Light Artillery ...... 844 108 GUNNER ...... 1685 126 Ammunition Handler, Light Tank ...... 1736 126 131 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

,SSN Pae= SSN Page Ammunition Handler, Pack Artillery ...... 1531 125 Antitank Gunner, Reconnaissance Car ...... 733 92 Ammunition Inspector. Field ...... 949 120 Antitank Noncommissioned Officer ...... 610 79 AMMUNITION NONCOMMISSIONED Armament Parts Clerk...... 848 109 OFFICER ...... '.. 505 67 Armor Plate Welder...... 923 116 Ammunition Noncommissioned Officer, H«avy ARMORER ...... 511 68 Artillery ...... 845 108 Armorer, Airplane ...... 911 114 Ammunition Noncommissioned Officer, Light Armorer, Balloon ...... 639 82 Artillery ...... 844 108 Armorer-Gunner, Airplane ...... 612 79 Ammunition Noncommissioned Officer, Pack Army Airways Communication System Radio Artillery ...... 1531 125 Mechanic...... 778 99 AMMUNITION RENOVATOR ...... 949 120 Army Airways Communication System Radio Ammunition Supply Technician (AAF)..... 505 67 Operator ...... 760 96 AMPHIBIAN TANK CREWMAN ...... 3736 129 ARMY AIR FORCES GUNNERY IN AMPHIBIAN TRACK VEHICLE ME STRUCTOR ...... 938 119 CHANIC ...... :...... 837 106 ARMY AIR FORCES SUPPLY TECHNI AMPHIBIAN TRACTOR DRIVER ...... 732 92 CIAN ...... 826 105 AMPHIBIAN TRANSPORTATION NON Artillery Gun Crewman, Pack...... 1531 125 COMMISSIONED OFFICER ...... 927 117 ARTILLERY MECHANIC, ANTIAIRCRAFT AMPHIBIAN TRUCK DRIVER ...... 934 118 (AUTOMATIC WEAPONS) MINOR AMPHIBIAN TRUCK MECHANIC (DUKW) 797 101 MAINTENANCE ...... 833 105 Amphibian Truck Noncommissioned Officer.. 927 117 ARTILLERY MECHANIC, ANTIAIRCRAFT Analytical Chemist ...... 292 54 (GUN) MINOR MAINTENANCE ...... 834 10? Animal Packer ...... 712 89 ARTILLERY MECHANIC, ANTIAIRCRAFT, Animated Motion Picture Cameraman...... 285 53 SELF-PROPELLED, MINOR MAINTE ANIMATION ARTIST ...... 130 36 NANCE ...... 841 107 ANTIAIRCRAFT ARTILLERY AUTO Artillery Mechanic, Chief...... 973 123 MATIC WEAPONS CREWMAN...... 601 77 ARTILLERY MECHANIC, HEAVY ...... 914 115 ANTIAIRCRAFT ARTILLERY AUTO ARTILLERY MECHANIC, HEAVY ANTI MATIC WEAPONS CREWMAN, SELF- AIRCRAFT ...... 915 115 PROPELLED ...... 3601 129 ARTILLERY MECHANIC, LIGHT ...... 913 114 Antiaircraft Artillery Director Repairman, ARTILLERY MECHANIC, LIGHT ANTI Electrical ...... 899 112 AIRCRAFT ...... 978 124 ANTIAIRCRAFT ARTILLERY GUN ARTILLERY MECHANIC, MINOR MAIN CREWMAN ...... 2601 127 TENANCE ...... 802 101 ANTIAIRCRAFT ARTILLERY MACHINE Artillery Mechanic, Seacoast ...... 914 115 GUN CREWMAN, SELF-PROPELLED.... 597 77 Artillery Repairman, Heavy Antiaircraft Antiaircraft Artillery Mechanic, Automatic UAF) ...... 915 115 Weapons ...... 833 105 ARTIST ...... 296 54 Antiaircraft Artillery Mechanic, Gun ...... 834 105 Artist, Animation ...... 130 36 Antiaircraft Artillery Mechanic, Heavy ..... 915 US Assault Gun Crewman, Light Tank ...... 1736 126 Antiaircraft Artillery Mechanic, Light ...... 978 124 Assault Gun Crewman, Amphibian ...... 3736 129 Antiaircraft Artillery Mechanic, SP ...... 841 107 Assault Gun Crewman, Medium ...... 2736 128 Antiaircraft Artillery Noncommissioned Assault Gun Mechanic, Minor Maintenance.. 660 84 Officer, Automatic Weapons...... 601 77 Assistant Barge Captain ...... 065 27 Antiaircraft Artillery Noncommissioned Officer, Assistant Director, Motion Picture...... 286 53 Gun ...... 2601 127 Assistant Producer, Motion Picture...... 286 53 ANTIAIRCRAFT ARTILLERY NONCOMIS Assistant Road Foreman, Engine ...... 110 33 SIGNED OFFICER, SELF-PROPELLED Assistant Safety Engineer...... 486 66 WEAPONS ...... 598 77 Assistant Safety Engineer, Petroleum Products 486 66 Antiaircraft Fire Control Electrician, Auto Assistant Shop Superintendent...... 205 44 matic Weapons ...... 633 81 Assistant Trainmaster ...... 265 91 Antiaircraft Fire Control Electrician, Gun.... 634 81 ATHLETIC INSTRUCTOR ...... 283 53 Antiaircraft Fire Control Observer, Flank Audit Clerk ...... 055 25 Station ...... 518 63 Automatic Pilot and Bombsight Repairman.. 574 74 Antiaircraft Fire Director Operator...... 527 69 AUTOMATIC RIFLEMAN ...... 746 94 Antiaircraft Machine Gunner ...... 605 78 AUTOMATIC TELEPHONE SYSTEM Antiaircraft Master Gunner, Automatic MAINTENANCE MAN ...... 115 34 Weapons ...... 832 105 Automatic Weapons Crewjnan, Antiaircraft Ar- 129 Antiaircraft Master Gunner, Barrage Balloon. 832 105 tillerv, Self-propelled ...... 3601 Antiaircraft Master Gunner, Searchlight .... 832 105 Automobile Body Repairman ...... 201 44 Antiaircraft Master Gunner, Gun ...... 671 86 Automobile Mechanic (Second Echelon).... 014 21 ANTIAIRCRAFT RANGE SECTION NON Automobile Painter ...... 144 38 COMMISSIONED OFFICER ...... 527 69 Automobile Radiator Repairman ...... 201 44 Antiaircraft Range Section Operator ...... 1645 125 AUTOMOBILE SERVICEMAN ...... 316 55 Antiaircraft Searchlight Electrician ...... 635 81 Automotive Assembler ...... 965 122 Antitank Gun Commander ...... 610 79 Automotive Electrician (Second Echelon)... 014 21 ANTITANK GUN CREWMAN...... 610 79 Automotive Electrician, Fourth Echelon k Antitank Gunner ...... 610 79 (AAF) ...... 912 114 132 ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES

SSN P«e= Automotive Equipment Mechanic, Army Air Bookbinder ...... 055 25 Forces ...... :... 014 21 Bookkeeper ...... 055 25 Automotive Equipment Operator (AAF)..... 345 37 Bookkeeping Machine Operator...... 055 25 AUTOMOTIVE MECHANIC (SECOND Boom Man ...... 208 45 ECHELON) ...... 014 21 Boring Mill Operator ...... 302 55 Automotive Mechanic, Track Vehicle (Third Bow Gunner, Light Tank ...... 1736 126 Echelon) ...... 966 123 Bow Gunner, Medium Tank ...... 2736 128 Automotive Mechanic, Wheel Vehicle (Third Brake Inspector, Locomotive ...... 112 33 Echelon) ...... 965 122 Brake Inspector, Railway Car ...... 048 25 Automotive Repair Shop Foreman ...... 337 56 Brake Mechanic, Locomotive ...... 112 33 Automotive Repairman (AAF) ...... 965 122 BRAKEMAN, RAILWAY ...... 033 23 Axman, Surveying ...... ,...... '...... 188 42 BRICKLAYER ...... 034 23 Bridge Builder ...... 035 23 B Bridge Carpenter ...... 035 23 BAKER ...... 017 22 Bridge Foreman ...... 035 23 BALLOON ARMORER ...... 639 82 Bridge Inspector ...... :... 035 23 Balloon Crew Chief...... 526 . 69 BUGLER ...... 803 102 BALLOON CREWMAN ...... 526 69 Burner, Acetylene ...... 256 49 Balloon Envelope Repairman ...... 619 80 Butcher ...... 037 23 Balloon Gas Chief ...... 535 70 Buyer ...... 371 59" BALLOON GAS HANDLER ...... 535 70 BALLOON RIGGER ...... 619 80 C Balloon Rigger, Chief...... 615 79 Cabinetmaker ...... 050 25 BAND LEADER ...... 020 22 Cabinetmaker (Railway) ...... 046 24 BANDSMAN, BASS DRUM ...... 434 62 Cable Mechanic, Airplane ...... 689 88 BANDSMAN, BASSOON ...... 176 41 Cable Repairman ...... 039 24 BANDSMAN, CLARINET ...... 432 62 Cable Splicer, High Voltage ...... 401 60 BANDSMAN, CORNET OR TRUMPET..... 433 62 CABLE SPLICER, TELEPHONE AND BANDSMAN, EUPHONIUM OR BARITONE 436 62 TELEGRAPH ...... 039 24 BANDSMAN, FLUTE OR PICCOLO...... 437 62 Cable Station Operator ...... 209 45 BANDSMAN, FRENCH HORN ...... 438 62 Cable Station Technician ...... 197 43 Bandsman, Glockenspiel ...... 434 62 CALKER ...... 456 64 BANDSMAN, OBOE ...... 175 41 CAMERA REPAIRMAN ...... 042 24 BANDSMAN, SAXOPHONE ...... 439 62 CAMERA TECHNICIAN ...... 941 119 BANDSMAN, SNARE DRUM ...... 435 62 Camera Utility Man...... 043 24 BANDSMAN, TROMBONE ...... 440 62 CAMERAMAN, ANIMATED MOTION PIC BANDSMAN, TUBA ...... 441 62 TURE ...... 285 53 BARBER ...... 022 22 CAMERAMAN, MOTION PICTURE...... 043 24 Barge Captain ...... 065 27 CAMOUFLAGE TECHNICIAN ...... 804 102 Baritone Player ...... 436 62 Camoufleur ...... 804 102 Barrage Balloon Master Gunner...... 832 105 Cannon Crewman, Infantry ...... 844 108 Base Maintenance Man...... 590 76 Cannoneer, Amphibian Tank ...... 3736 129 BASIC ...... 521 68 Cannoneer, Antiaircraft Artillery, Automatic Basic Soldier, CWS ...... 979 124 Weapons ...... 601 77 Bass Drummer ...... 434 62 Cannoneer, Antiaircraft Artillery, Gun...... 2601 127 Bassoon Player ...... I..... 176 41 Cannoneer, Antitank ...... 610 79 Bath and Fumigation Operator...... 706 89 Cannoneer, Coast Artillery...... 608 78 Bath Attendant ...... 590 76 Cannoneer, Heavy Artillery ...... 845 108 Battery Clerk ...... 405 60 Cannoneer, Light Artillery ...... 844 108 Beautician ...... 022 22 Cannoneer, Light Tank ...... 1736 126 BLACKSMITH ...... 024 Cannoneer, Medium Tank ...... 2736 128 BLUEPRINTER OR PHOTOSTAT OPER- 22 Cannoneer, Pack Artillery ...... 1531 125 ATOR ...... 028 22 CANVAS COVER REPAIRMAN...... 044 24 Boat Operator ...... 118 35 Canvas Repair Superintendent ...... 530 70 Boatswain ...... 065 27 Canvas Worker ...... 044 24 Boatswain, Landing Craft ...... 838 106 Canvasser, Recruiting Unit...... 405 60 Boatswain, Small Boat ...... 118 35 Captain, Barge ...... 065 27 Boatswain's Mate ...... 065 27 CAR CARPENTER, RAILWAY ...... 046 24 Boehme Installer ...... 649 83 Car Distributor, Railway...... 047 25 Boiler Inspector ...... 030 23 CAR MECHANIC, RAILWAY ...... 048 25 BOILERMAKER ...... 030 23 Carburetor Repairman,' Airplane ...... 956 121 Boilermaker, Layer-out ...... 030 23 Carburetor Specialist ...... 926 117 BOMB SALVAGE TECHNICIAN ...... 924 117 Cargador ...... 713 90 Bomb Salvager ...... 924 117 CARGO CHECKER ...... 470 65 BOMBARDIER ...... 509 67 Cargo Foreman ...... 065 27 BOMBSIGHT AND AUTOMATIC PILOT CARGO GEAR MECHANIC...... 246 49 REPAIRMAN ...... 574 74 Carpenter (AAF) ...... 050 25 BOMBSIGHT MECHANIC ...... 683 87 Carpenter, Bridge ...... 035 23 133 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN Page SSN ?«= Carpenter, Construction ...... 050 25 Clerk, Headquarters ...... 405 60 CARPENTER, GENERAL ...... 050 25 Clerk, Historical ...... 055 25 CARPENTER, HEAVY CONSTRUCTION .. 035 23 Clerk, Legal ...... 279 52 CARPENTER, SHIP ...... 202 44 Clerk, Message Center ...... 667 85 CARTOGRAPHER ...... 387 60 Clerk (Non-Typist) (AAF) ...... 055 25 CASEMATE ELECTRICIAN ...... 579 75 Clerk, Panel and Code ...... 667 85 Cashier ...... 373 59 Clerk, Parts, Armament ...... 848 109 Casting Cleaner ...... 129 35 Clerk, Personnel ...... ^ 405 60 Casting Machine Operator ...... 168 40 Clerk, Postal ...... 056 26 CENTRAL OFFICER REPAIRMAN...... 095 31 Clerk, Prosthetic Dental Supply...... 847 108 Central Station Fire Control Specialist...... 960 122 Clerk, Record ...... 055 25 Chainman, Surveying ...... 191 42 Clerk, Sales ...!...... 373 59 Chaplain's Assistant ...... 405 60 Clerk, Shipping ...... 835 106 Chassis Mechanic Track Vehicle ...... 908 113 Clerk, Shop ...... 457 . 64 Chassis Mechanic Wheel Vehicle ...... 906 113 Clerk, Statistical ...... 055 25 Chauffeur ...... 345 57 Clerk, Stock ...... 835 106 CHEMICAL ENGINEER ...... 293 54 Clerk, Supply ...... 835 ' 106 Chemical Equipment Operator...... 786 99 Clerk, Technical, Finance ...... 622 80 Chemical Handler ...... 786 99 Clerk, Technical Supply (AAF)...... 826 105 Chemical Inspector ...... 292 54 CLERK-TYPIST ...... 405 60 CHEMICAL LABORATORY ASSISTANT... 411 61 Clerk-Typist, Finance ...... 623 80 CHEMICAL NONCOMMISSIONED Clockmaker ...... 381 59 OFFICER ...... 870 111 Clothing Repair Foreman...... 234 47 Chemical Technician (AAF) ...;...... 870 111 Coast Artillery Chief of Range ...... 578 75 Chemical Warfare Basic...... 979 124 Coast Artillery Master Gunner ...... 670 85 CHEMICAL WARFARE MAN, GENERAL.. 979 124 Coast Artillery Observation Station Operator. 578 75 CHEMIST ...... 292 54 Coast Artillery Range Section Operator...... 724 91 CHIEF ARTILLERY MECHANIC...... 973 123 Code Clerk ...... 667 85 Chief Baker ...... 017 22 Code Compiler ...... 807 102 CHIEF BALLOON RIGGER...... 615 79 COMMISSARY STEWARD ...... 819 103 Chief Clerk ...... 502 67 COMMUNICATIONS CHIEF ...... 542 71 Chief Field Lineman ...... 641 82 Communications Sergeaht ...... 542 71 Chief Installer, Telephone and Telegraph.... 261 50 Communications Supply Technician (AAF).. 581 75 Chief Marine Engineer ...... 080 29 Communications Technician (AAF) ...... 542 71 Chief Mechanic, Auto Repair Shop...... 337 56 Company Clerk ...... 405 60 Chief of Breech, Coast Artillery...... 608 78 Computer, Fire Director ...... 645 82 Chief of Detail, Field Artillery...... 577 74 Computer, Geodetic ...... 243 48 Chief of Range, Coast Artillery...... 578 75 Computer, Gun Data, Seacoast...... 572 74 Chief of Section (see par. lOc, sec. 1) Computer, Survey ...... 228 46 Chief Oiler, Marine ...... 141 37 Computer, Topographical ...... 243 48 Chief Operator, Sterilizer ...... 103 32 Concrete Mixer Operator...... 359 58 Chief Quartermaster ...... 065 27 CONDUCTOR, RAILWAY ...... 058 26 Chief Radar Operator (Designated Set)..... 514 68 CONSTRUCTION EQUIPMENT Chief Radio Repairman, Fixed Station...... 649 83 MECHANIC ...... 319 56 Chief Steward ...... 819 103 Construction Equipment Serviceman (AAF). .1 316 55 CHIEF STOREKEEPER, RAILWAY...... 769 98 Construction Foreman ...... 059 26 Chief Submarine Cable Terminal Operator.. 209 45 Construction Laborer ...... 188 42 Chief Submarine Mine Planter ...... 722 90 CONSTRUCTION MACHINE OPERATOR.. 359 58 Chief Switchboard Operator, Field...... 650 83 Construction Technician (AAF) ...... 059 26 Chief Toxic Gas Handler...... 786 99 Construction Worker (AAF) ...... 188 42 Chief Telegraph Operator ...... 236 47 CONTROL CENTER TECHNICIAN...... 768 98 Chief Teletypewriter Operator ...... 237 47 Control Chief, Radio Intelligence...... 543 71 Chipper ...... 129 35 CNS Radio Operator ...... 759 96 Chiropodist ...... 422 ^j Control Room Operator...... 543 71 Clarinetist ...... 432 "62 Control Station Operator...... 763 97 CLASSIFICATION SPECIALIST...... 275 52 CONTROL SYSTEM REPAIRMAN, Clerk, Account ...... 055 25 HEAVY ANTIAIRCRAFT ...... 919 116" Clerk, Administrative and Technical...... 405 60 Control System Repairman, Light, Antiaircraft Clerk, Audit ...... 055 25 Artillery ...... 918 115 Gerk, Automotive Parts ...... 348 58 CONTROL TOWER OPERATOR...... 552 72 Clerk, Battery ...... 405 60 COOK ...... 060 26 Clerk, Chief ...... 502 67 Cook's Helper ...... 590 76 Clerk, Code ...... 667 85 COOPER .:...... 270 51 Clerk, Company ...... 405 60 COPPERSMITH ...... 061 26 Clerk, File ...... 055 25 Coremaker ...... 129 35 Clerk, Finance ...... 624 80 Cornetist ...... 433 62 Clerk, Flight Traffic ...... 2967 129 Counselor, Occupational Rehabilitation...... 262 50 CLERK, GENERAL ...... 055 25 Counterintelligence Corps Agent ...... 301 55 134 ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES

SSN P«*« SSN P.80 Counterintelligence Corps Special Agent .... 301 5S DRAFTSMAN, STRUCTURAL ...... 074 28 Court Reporter ...... 213 45 DRAFTSMAN, TOPOGRAPHIC ...... 076 28 Coxswain, L J5oat ...... 547 71 Drag Tender ...... 116 34 Coxswain, Landing Craft ...... 838 106 Dredgehand ...... 116 34 COXSWAIN, MINE YAWL ...... 546 71 DREDGEMAN ...... 116 34 COXSWAIN, RADIO TARGET BOAT...... 703 89 Dredge Leverman ...... 116 34 CRANE OPERATOR ...... 063 27 Dredge Pipe-Line Foreman ...... 116 34 Crash Boat Operator ...... 118 35 Drill Press Operator...... 302 55 Crew Chief, Airplane ...... 750 95 Driver, Ambulance ...... 345 57 Criminal Identification Laboratpry Technician 677 86 Driver, Amphibian Truck ...... 934 118 CRYPT ANALYSIS TECHNICIAN ...... 808 102 Driver, Full-Track ...... 735 92 Cryptanalyst ...... 808 102 Driver, Half-Track ...... 931 118 Cryptographer ...... 807 102 Driver, Heavy Truck ...... 931 118 CRYPTOGRAPHIC CODE COMPILER .... 807 102 Driver, Horse Artillery ...... 563 73 CRYPTOGRAPHIC REPAIRMAN (DESIG Driver, Light Truck ...... 345 57 NATED EQUIPMENT) ...... 801 101 Driver, Pack ...... 565 73 CRYPTOGRAPHIC TECHNICIAN ...... 805 102 Driver, Reconnaissance or Scout Car...... 733 92 CRYSTAL GRINDER ...... 150 36 Driver, Self-Propelled Antitank Gun...... 610 79 Cutter, Film ...... 131 36 Driver, Tank, Light ...... 1736 126 Cutter, Sound ...... 287 53 Driver, Tank, Medium '...... 2736 128 Driver, Trailer Truck...... 932 118 Duplicating Machine Operator (Ditto Dairy Inspector ...... 120 35 or Mimeograph) ...... 055 25 Deckhand ...... 065 27 Duplicating Machine Operator (Multilith or DECONTAMINATING EQUIPMENT Multigraph) ...... 128 35 OPERATOR ...... 809 102 DUTY NONCOMMISSIONED OFFICER.... 566 73 DEMOLITION SPECIALIST ...... 533 70 DUTY SOLDIER I...... 522 69 Demolition Technician Army Air Forces..... 533 70 DUTY SOLDIER II...... 188 42 DENTAL LABORATORY TECHNICIAN.... 067 27 DUTY SOLDIER III...... 590 76 Dental Methanic ...... 067 27 DENTAL TECHNICIAN ...... 855 109 Diesel Engineman ...... 081 29 Earth-Boring Machine Operator...... 188 42 Diesel Locomotive Engineer ...... 110 33 Editor ...... 274 52 Diesel Locomotive Mechanic ...... 013 21 Educational Reconditioning Instructor...... 659 84 DIESEL,MECHANIC ...... 013 21 Electric Arc Welder ...... 256 49 Diesel Mechanic, Marine ...... 477 65 Electric Locomotive Engineer...... 110 33 Diesel Mechanic, Tractor ...... 013 21 ELECTRIC LOCOMOTIVE REPAIRMAN... 135 36- Dining Room Orderly...... 590 76 ELECTRIC MOTOR REPAIRMAN ...... 304 55 DIRECTION FINDER EVALUATOR ...... 869 HI Electrical Accessories Repairman, Airplane Director. Observer, Antiaircraft ...... 1645 125 and Engine ...... 958 121 Director Operator, Antiaircraft ...... 1645 125 Electrical Director Repairman, Heavy Anti DIRECTOR REPAIRMAN, ELECTRICAL, aircraft Artillery :...... 899 112 HEAVY ANTIAIRCRAFT ARTILLERY... 899 112 Electrical Draftsman ...... 075 28 Director Repairman, Light Antiaircraft Electrical Instrument Mechanic, Airplane.... 957 121 Artillery ...... 918 115 Electrical Instrument Repairman ...... 338 57 DIRECTOR REPAIRMAN, MECHANICAL, Electrical Mechanic, Airplane ...... 685 87 HEAVY ANTIAIRCRAFT ARTILLERY... 917 115 ELECTRICIAN ...... 078 29 Dispatcher-Clerk (Crew) ...... 055 25 ELECTRICIAN, AUTOMOTIVE ...... 912 114 Dispatcher-Clerk Motor Vehicle ...... 055 25 Electrician, Automotive (Second Echelon)... 014 21 Dispatcher-Driver (Light Truck) ...... 345 57 Electrician, Casemate ...... 579 75 Dispatcher-Driver, Heavy Truck...... 931 118 Electrician, Fire Control, Antiaircraft, DISPATCHER, RAILWAY ...... 069 27 Automatic Weapons ...... 633 81 Ditto or Mimeograph Machine Operator...... 055 25 Electrician, Fire Control, Antiaircraft, Gun.. 634 81 DIVER ...... 454 63 Electrician, Generator and Motion Picture... 132 36 Diver, First Class ...... 454 63 ELECTRICIAN, HARBOR DEFENSE...... 571 73 Diver, Second Class ...... 454 63 Electrician, Ml Seacoast Gun Data Computer 572 74 DIVER'S HELPER ...... 455 63 ELECTRICIAN, MOTION PICTURE...... 132 36 Dock Boss ...... 271 51 Electrician, Power Plant ...... 258 49 Dock Builder ...... 035 23 Electrician, Searchlight ...... 635 82 Dog Handler ...... 458 64 ELECTRICIAN, SOUND TRANSMISSION.. 415 61 DOG TRAINER ...... 458 64 Electrician, Substation ...... 258 49 Dog Training Instructor...... 458 64 Electrician, Track and Wheel Vehicle...... 912 B4 DRAFTSMAN ...... 070 27 Engine and Airplane Mechanic ...... 747 94 DRAFTSMAN, ELECTRICAL ...... 075 28 Engine Lathe Operator ...... 302 55 Draftsman, Lithographic ...... -107 32 Engine Mechanic, Track Vehicle...... 909 114 DRAFTSMAN, MECHANICAL ...... 071 28 Engine Mechanic, Wheel Vehicle...... 905 113 Draftsman, Observation ...... 1076 124 Engine Repairman, Airplane ...... 762 97 Draftsman, Railway ...... 071 28 Engine Specialist (Machinist, Automobile)... 114 34 135 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN P»E« • SSN p»e<: Engine Tester ...... 160 39 Fire Control Instrument Repairman ...... 922 116, Engineer, Aerial ...... 2750 128 Fire Control Noncommissioned Officer, Field Engineer Basic ...... 729 91 Artillery ...... 577 74 Engineer, Chemical ...... 293 54 Fire Control Observer, Antiaircraft, Flank Engineer, Chief Marine ...... 080 29 Station ...... 518 68 Engineer Equipment Parts Clerk...... 348 58 FIRE CONTROL REPAIRMAN, LIGHT Engineer, Explosives ...... 533 70 ANTIAIRCRAFT ARTILLERY ...... 918 115 Engineer, Flight ...... 737 92 Fire Director Computer ...... 645 82 Engineer-Gunner, Aerial ...... 748 94 FIRE FIGHTER ...... 383 59) Engineer, Locomotive ...... 110 33 Firearms Identification Specialist...... 677 86 Engineer, Marine ...... 080 29 Fireman, Furnace ...... 590 76, Engineer, Powerhouse ...... 077 29 Fireman, Locomotive ...... Ill 33 Engineer, Safety, Petroleum Products...... 486 66 Fireman, Marine ...... 117 34 Engineer, Stationary ...... 082 29 Fireman, Oven ...... 590 76 ENGINEER SUPPLY TECHNICIAN...... 583 76 Fireman, Stationary ...... 084 30 Engineer. Water Supply ...... 727 91 First-Aid Man ...... 657 84 ENGINEERING AIDE (DESIGNATED First Sergeant (see par. lOc sec. 1) FIELD) ...... '.... 170 40 Flame Thrower ...... 533 70 Engineering Technician, Aircraft...... 925 117 Flash Ranging Chief...... 576 74 Engineman, Diesel ...... 081 29 FLASH RANGING OBSERVER...... 576 74 Engineman, Marine ...... 839 107 Flash Switchboard Operator...... 576 74 ENGINEMAN, OPERATING ...... 081 29 FLEXIBLE GUNNERY TRAINER OPER Engraver, Lithographic ...... 107 32 ATOR-MECHANIC ...... 691 88 Enlisted Airplane Pilot ...... 770 98 Flight Chief, Airplane ...... '750 95 Enlisted Bombardier ...... 509 67 FLIGHT ENGINEER ...... 737 92 Enlisted Liaison Pilot-Mechanic ...... 772 98 Flight Surgeon's Assistant...... 409 61 Enlisted Service Pilot ...... 773 98 FLIGHT TRAFFIC CLERK...... 2967 129 Entertainer ...... 442 63' Flute Player ...... 437 62 Entertainment Director ...... 442 63 Forage Inspector ...... 710 89 ENTERTAINMENT SPECIALIST ...... 442 63 Forecaster, Weather ...... 787 100 ENTOMOLOGY TECHNICIAN ...... 484 66 FOREMAN, AUTOMOTIVE REPAIR SHOP 337 56 Equipment Maintenance Man, Motion Picture 042 24 Foreman, Blacksmith ...... 024 22 Equipment Mechanic, Target Airplane, PQ... 994 124 Foreman, Boilermaker ...... 030 23 Equipment Repairman, Motion Picture...... 042 24 Foreman, Bridge ...... 035 23 Euphonium Player ...... "436 62 Foreman, Butcher ...... 037 23 Explosive Engineer ...... 533 70 Foreman, Car Carpenter ...... 046 24 Foreman, Car Mechanic ...... 048 25 Foreman, Clothing Repair ...... 234 47 FABRIC AND DOPE MECHANIC...... 548 72 • FOREMAN, CONSTRUCTION ...... 059 26 FACSIMILE OPERATOR ...... 893 112 Foreman, Construction Equipment Repair.... 319 . 56 FACSIMILE TECHNICIAN ...... 894 112 Foreman, Dredge Pipe-line...... 116 34 Field Artillery Fire Control Instrument Foreman, Foundry I...... 129 35 Operator ...... 645 82 FOREMAN, FUMIGATION AND BATH.... 591 76 Field Artillery Sound Recorder...... 836 106 Foreman, Hatch ...... 271 51 Field Inspector, Ammunition...... 949 120 Foreman, Horse Trainer ...... 093 30 FIELD LINEMAN ...... 641 812 FOREMAN, LABOR ...... 356 58 Field Wire Chief ...... 641 82 FOREMAN, LAUNDRY ...... 102 32 Field Wire Noncommissioned Officer ...... 641 82 Foreman, Lithographer ...... 107 32 File Clerk ...... 055 25 FOREMAN, LOGGING ...... 466 65 Film Cutter ...... "...... 131 36 Foreman, Lumber Yard ...... 459 64 FILM EDITOR, MOTION PICTURE...... '.. 131 36 Foreman, Machine Shop ...... 114 34 Film Librarian ...... 055 25 Foreman, Machinist ...... 114 34 Film Recorder, Motion Picture, Sound...... 208 43 Foreman Mechanic, Laundry ...... 104 32 Film Strip Artist ...... 296 54 -Foreman Mechanic, Locomotive ...... 112 33 Filter Board Instructor ...... 510 - 67 Foreman, Milling ...... 459 64 Filter Operator, Water Supply...... 727 91 Foreman, Oxygen and Acetylene Plant...... 719 90 Filter Unit Operator ...... 727 91 Foreman, Piling (Lumber) ...... 459 64 Filterer, Aircraft Warning...... 510 67 Foreman, Pipe-line Construction...... 059 26 FINANCE CLERK ...... 624 80 Foreman, Railway Yard ...... 265 51 FINANCE TECHNICAL CLERK...... 622 80 Foreman, Salvage ...... 194 43 FINANCE TYPIST-CLERK ...... 623 80 Foreman, Sawmill ...... 459 64 Fingerprinter ...... 301 55 Foreman, Shoe Repair ...... 204 44 FIRE CONTROL ELECTRICIAN, ANTIAIR Foreman, Stevedore ...... 271 51 CRAFT (AUTOMATIC WEAPONS)...... 633 81 FOREMAN, WAREHOUSE ...... 252 49 FIRE CONTROL ELECTRICIAN, ANTIAIR Foreman. Water Supply ...... 727 91 CRAFT (GUN) ...... 634 81 FOREST PRODUCTS TALLYMAN...... 462 64 FIRE CONTROL INSTRUMENT OPER Forging Press Operator...... 024' 22 ATOR, FIELD ARTILLERY...... 645 82 Fork Lift Operator ...... 188 42 136 ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES

SSN Page SSN Paee Foundry Foreman ...... 129 35 Gunner, Master, Coast Artillery...... 670 85 FOUNDRYMAN ...... 129 35 Gunner-Mechanic, Airplane ...... 748 94 Frameman, Telephone and Telegraph...... 095 31 Gunner-Mechanic, Airplane Power Plant... .1684 126 French Horn Player...... 438 62 Gunner-Mechanic, Electrical, Airplane...... 1685 126 Fuel Induction Mechanic...... 926 117 Gunner-Mechanic-Operator, Radio, Army Air FUEL CELL REPAIRMAN...... 665 . 8S Forces ...... 757 95 FULL-TRACK DRIVER ...... 735 92 Gunner-Mechanic, Remote Control Turret... 580 75 Fumigation and Bath Foreman...... 591 76 Gunner, Medium Tank ...... 2736 128 FUMIGATION AND BATH MAN...... 706 89 Gunner, Pack Artillery ...... 1531 125 Fumigation Chamber Operator ...... 706 89 Gunner-Photographer, Aerial ...... :. 939 119 Furnace Fireman ...... 590 76 Gunnery Instructor, AAF...... 938 119 Furnace Operator ...... 129 35 Gunsight and Power Turret Mechanic...... 678 87 Fuze Setter, Antiaircraft Artillery, Gun...... 2601 127 Gunsight and Power Turret Repairman...... 681 87 Fuze Setter, Coast Artillery,..,,,,....,...., 608 73 GYROSTABILIZER MECHANIC ...... 1907 127 H Half-Track Driver ...... 931 118 Gager, Petroleum Products...... 522 69 Half-Track Driver, Antitank Gun Crew...... 610 79 Gangwayman ...... 271 51 Hammersmith ...... 024 22 Gantry Crane Operator...... 063 26 Handler, Toxic Gas...... 786 99 Gas Dispenser Operator ...... 081 29 Harbor Craft Coxswain...... 823 104 Gas Handler ...... 786 99 HD Electrician ...... 571 73 Gas Handler, Balloon ...... 535 7Q Harness Maker ...... 192 42 Gas Mask Repairman ...... 609 79 Hatch Foreman ...... 271 51 Gas and Oil Man ...... 316 55 Hatch Tender ...... 271 51 Generator Operator, Power, Portable...... 846 !08 Header ...... 271 51 GENERATOR SWITCHBOARD OPERATOR 092 3(J Headquarters Clerk ...... 405 60 GEODETIC COMPUTER ...... 243 43 Heat Treater ...... 024 22 GLASSBLOWER ...... 358 53 Heavy Antiaircraft Artillery Control System GLIDER MECHANIC ...... 559 72 Repairman ...... 919 116 Glockenspiel Player ...... 434 62 Heavy Antiaircraft Artillery Mechanical Graphotype Machine Operator ...... 405 60f Director Repairman ...... 917 115 Grinder, Crystal ...... 150 38 Heavy Artillery Gun Crewman ...... 845 108 Grinding Machine Operator...... 302 55 Heavy Artillery 'Mechanic ... .V...... 914 115 GROUND AIRCRAFT OBSERVER...... 518 58 Heavy Automotive Equipment Operator Ground Loran, Radar Mechanic...... 948 12Q (AAF) ...... 931 118 Ground Observer, Aircraft Warning (AAF).. 518 68 HEAVY MACHINE GUNNER ...... 605 78 Groundman, Telephone and Telegraph...... 238 48 Heavy Mortar Assistant ...... 1607 125 Guard-Patrolman ...... 522 69 HEAVY MORTAR CREWMAN...... 1607 125 Guard, Toxic Gas...... 786 99 Heavy Mortar Gunner...... 1607 125 Gun Commander, Antitank ...... 610 79 HEAVY WEAPONS NONCOMMISSIONED Gun Commander, Coast Artillery...... 608 78 OFFICER ...... 812 102 Gun Crewman, Antiaircraft Artillery...... 2601 127 HEIGHT FINDER OBSERVER ...... 692 88 GUN CREWMAN, COAST ARTILLERY.... 608 78 HEIGHT FINDER REPAIRMAN ...... 921 116 GUN CREWMAN, HEAVY ARTILLERY.... 845 108 High Speed Radio Operator, Automatic ..... 777 . 99 GUN CREWMAN, LIGHT ARTILLERY ... 844 108 High Speed Radio Operator, Manual ...... 766 97 GUN CREWMAN, MEDIUM ARTILLERY.. 864 HI HIGH VOLTAGE CABLE SPLICER ...... 401 60 GUN CREWMAN, PACK ARTILLERY.... .1531 125 HIGH VOLTAGE LINEMAN ...... 182 41 Gun Data Computer, Seacoast...... 572 74 Highway Construction Machine Operator..... 359 58 Gun Pointer, Coast Artillery...... 608 73 Highway Maintenance Man...... 188 42 Gunner, Aerial ...... 611 79 Historical Clerk ...... 055 25 Gunner, Amphibian Tank ...... 3736 129 Hoist Operator ...... 063 26 Gunner, Antiaircraft Artillery, Automatic Horizontal Operator ...... 645 82 Weapons' ...... 601 77 HORSE ARTILLERY DRIVER...... 563 73 Gunner, Antiaircraft Artillery, Gun...... 2601 127 Horse Trainer ...... 093 30 Gunner, Antiaircraft, SP ...... 597 77 HORSEBREAKER ...... 093 30 Gunner, Antitank (Reconnaissance)...... 733 92 Horseholder ...... 590 76 Gunner-Armorer, Airplane ...... 612 79 HORSESHOER ...... 094 30 Gunner, Coast Artillery ...... 608 78 Hospital Orderly ...... '. .657 84 Gunner-Engineer, Aerial ...... 748 94 Hot Press Operator...... 168 40 Gunner, Heavy Artillery ...... 845 108 Hydraulic Brake Mechanic, Airplane...... 528 69 Gunner, Light Artillery ...... 844 108 Gunner, Light Mortar...... 607 78 I Gunner, Light Tank ...... !l736 126 Infantry Cannon Crewman...... 844 108 Gunner, Machine, Antiaircraft ...... 597 77 INFORMATION CENTER OPERATOR..... 510 67 Gunner, Machine, Antiaircraft Artillery, Insideman, Telephone ...... 095 31 Automatic Weapons ...... 601 77 Inspector, Administrative ...... 502 67 Gunner, Master, Antiaircraft, Gun...... 671 86 Inspector, Airplane ...... 750 95 137 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN Page J SSN Page Inspector, Airplane (Third and Fourth Eche Jackhammer Operator ...... 188 42 lon Repair) ...... 925 117 Job Analyst ...... 275 52 Inspector, Ammunition ...... 949 120 JOB PRESSMAN ...... 169 40 Inspector, Boiler ...... 030 23 Inspector, Brake, Locomotive...... 112 33 Inspector, Brake, Railway ...... 048 25 Kennelman ...... 458 •64 Inspector, Bridge ...... 035 23 KEY PUNCH MACHINE OPERATOR...... 272 51 Inspector, Chemical ...... 292 54 Kitchen Helper ...... 590 76 Inspector, Meat or Dairy...... 120 35 Knock Engine Tester ...... 160 39 Inspector, Motor ...... 413 61 Inspector, Salvage ...... 194 43 Inspector, Telephone ...... 261 50 L Boat Master...... 547 71 Inspector, Vehicle ...... 413 61 Labor Foreman ...... 356 58 Inspector, Watch or Clock...... '..... 381 59 Laboratory Assistant, Chemical ...... 411 61 Installer-Repairman, Aircraft Warning Laboratory Assistant, Physics ...... 160 39 Plotting Board ...... 097 31 Laboratory Equipment Repairman (Camera). 042 24 Installer-Repairman, Railway (Tp and Tg)... 238 48 Laboratory Supervisor, Motion Picture...... 134 36 Installer-Repairman, Switchboard, Manual... 232 4Ti Laboratory Technician, j^-eveloper, Still ..... 945 119 INSTALLER-REPAIRMAN, TELEPHONE Laboratory Technician, General, AND TELEGRAPH ...... 097 31 Photographic ...... 945 119 INSTALLER, TOLL TELEPHONE AND Laboratory Technician, Medical ...... 858 110 TELEGRAPH ...... 384 59 LABORATORY TECHNICIAN, MOTION INSTRUCTOR (DESIGNATED SUBJECT). 659 84 PICTURE ...... 134 36 Instructor, Athletics ...... 283 53" Laboratory Technician, Photographic, Aerial. 945 119 Instructor, Dog Training ...... 458 64 Laboratory Technician, Sensitometry ...... 134 36 Instructor, Gunnery (AAF) ...... 938 119 Laboratory Technician, 16-mm ...... 134 36 Instructor, Link Trainer ...... 658 84 Laboratory Technician, 35-mm ...... 134 36 Instructor, Physical Reconditioning ...... 283 53 LABORATORY TECHNICIAN, V-MAIL OR Instructor, Senior, Technical ...... 659 84 MICROFILM ...... 016 21 Instructor, Special Service School...... 659 84 Laborer ...... 590 76 Instructor, Technical ...... 659 84 Laborer, Construction ...... 188 42 INSTRUMENT LANDING EQUIPMENT Landing Craft Boatswain ...... 838 106 MECHANIC ...... 933 118 Landing Craft Coxswain ...... 838 106 Instrument Man, Survey ...... 228 46 Landing Craft Noncommissioned Officer...... 838 106 Instrument Mechanic, Airplane...... :.. 686 88 Landing Craft Seaman ...... 838 106 Instrument Noncommissioned Officer, Field Laundry, Foreman ...... 102 32 Artillery, Survey ...... 577 74 LAUNDRY MACHINE OPERATOR ...... 103 32 Instrument Noncommissioned Officer, Heavy LAUNDRY MAINTENANCE MECHANIC... 104 32 Machine Gun ...... 605 78 Laundry Mechanic ...... 104 32 Instrument Noncommissioned Officer, Heavy Laundry Technician (AAF) ...... 102 32 Mortar ...... 1607 125 Lay-out Man, Photographic...... 945 119 Instrument Observer, Coast Artillery Observa LEATHER AND CANVAS WORKER...... 609 79 tion Station ...... 578 75 LEGAL CLERK ...... 279 52 Instrument Repairman, Airplane Gyro...... 961 122 Leverman, Dredge ...... 116 34 Instrument Repairman, Airplane, Mechanical. 959 122 Liaison Agent, Scouting...... 761 96 INSTRUMENT REPAIRMAN, ELEC LIAISON PILOT ...... 772 98 TRICAL ...... 338 57 Librarian ...... 055 25 INSTRUMENT REPAIRMAN, FIRE Light Antiaircraft Artillery, Fire Control Re CONTROL ...... 922 116 pairman ...... 918 115 INSTRUMENT REPAIRMAN, NON Light Artillery Gun Crewman ...... 844 108 ELECTRICAL ...... 098 31 Light Artillery Mechanic ...... 913 114 Instrument Repairman, Optical...... 962 122 LIGHT MACHINE GUNNER ...... 604 78 Intelligence Control Chief, Radio...... 543 71 LIGHT MORTAR CREWMAN ...... 607 78 INTELLIGENCE NONCOMMISSIONED LIGHT TANK CREWMAN ...... 1736 126 Light Truck Driver ...... 345 57 OFFICER ...... 631 81 LIGHT WEAPONS NONCOMMISSIONED Intelligence Observer, Field Artillery...... 577 74 OFFICER ...... 1812 127 Intelligence Observer, Reconnaissance Car... 733 92 Line Chief (Third and Fourth Echelon Re Intelligence Observer, Scouting ...... 761 96 pair) ...... 925 117 Intelligence Specialist (AAF)...... 631 81 Line Chief, Airplane ...... 750 95 INTERCEPT OPERATOR, FIXED Lineman, Field ...... 641 82 STATION ...... 799 101 Lineman, High Voltage ...... 182 41 INTERCEPT OPERATOR, G ...... 738 93 LINEMAN, POWER ...... :... 165 39 INTERCEPT OPERATOR, J ...... 739 93 LINEMAN, TELEPHONE AND TELE Intermediate Speed Radio Operator...... 740 93 GRAPH ...... 238 48 INTERPRETER ...... 320 56 LINK CELESTIAL NAVIGATION INVESTIGATOR ...... 301 55 TRAINER MECHANIC ...... 969 123 138 ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES

SSN Page SSN Paso LINK CELESTIAL NAVIGATION Master Diver ...... 454 63 TRAINER OPERATOR ...... 970 123 MASTER GUNNER, ANTIAIRCRAFT ..... 832 105 LINK TRAINER INSTRUCTOR ...... 658 84 MASTER GUNNER, ANTIAIRCRAFT LINK TRAINER MECHANIC ...... 593 77 (GUNi ...... 671 86 Linotype Operator ...... 168 40 Master Gunner, Automatic Weapons, Antiair Lithographer, Foreman ...... 107 32 craft ...... 832 105 Lithographer, General ...... 107 32 Master Gunner, Barrage Balloon ...... 832 105 Lithographer, Photo Transferor ...... 107 32 MASTER GUNNER, COAST ARTILLERY.. 670 85 Lithographic Draftsman ...... 107 32 Master Gunner, Searchlight ...... 832 105 Lithographic Engraver ...... 107 32 MASTER, L BOAT ...... 547 71 LITHOGRAPHIC PRESSMAN ...... 167 40 MASTER MECHANIC ...... 342 57 Litter Bearer .....:...... 657 84 Master Mechanic, Marine ...... 477 65 Loader, Amphibian Tank ...... 3736 129 Master, Ship ...... 118 55 Loader, Light Tank ...... 1736 126 Mate ...... 118 35 Loader, Medium Tank ...... 2736 128 MEAT CUTTER ...... 037 23 Locomotive Brake Inspector ...... 112 33 MEAT OR DAIRY INSPECTOR...... 120 35 Locomotive Brake Mechanic ...... 112 33 Meat Inspector ...... 120 35 Locomotive Diesel Mechanic ...... 013 21 Mechanic, Aerial Torpedo ...... 662 84 LOCOMOTIVE ENGINEER ...... 110 33 Mechanic, Airbrake ...... 048 25 Locomotive Engineer, Diesel ...... 110 33 Mechanic, Airplane Cable ...... 689 88 Locomotive Engineer, Electric ...... 110 33 Mechanic, Airplane, Electrical ...... 685 87 Locomotive Engineer, Steam ...... 110 33 Mechanic, Airplane Electrical Instrument .... 957 121 LOCOMOTIVE FIREMAN ...... Ill 33 Mechanic, Airplane Instrument ...... 686 88 Locomotive Hostler ...... 112 33 Mechanic, Airplane Plant ...... 684 87 LOCOMOTIVE MECHANIC ...... 112 33 Mechanic, Airplane, Propeller ...... 687 88 Locomotive Oiler ...... 112 33 Mechanic, Amphibian Track Vehicle ...... 837 106 Locomotive Repairman, Electric ...... ;.. 135 36 Mechanic, Antiaircraft Artillery, Gun ...... 834 105 Log Sealer ...... 462 (A Mechanic, Antiaircraft Artillery, Self-Pro- Logging Foreman ...... 466 65 pelled ...... 841 107 LONGSHOREMAN ...... 271 51 Mechanic, Antiaircraft, Automatic Weapons, Low Speed Radio Operator...... 776 98 Minor Maintenance ...... 833 105 Lubricator ...... 316 55 Mechanic, Amphibian Truck (Dukw)...... 797 101 Lumber Grader Tallyman ...... 462 64 Mechanic, Artillery, Chief ...... 973 123 Lumber Yard Foreman ...... 459 64 Mechanic, Artillery, Light Antiaircraft...... 978 124 LUMBERJACK ...... 329 56 Mechanic, Artillery, Minor Maintenance .... 802 101 M Mechanic, Assault Gun, Minor Maintenance. 660 84 Machine Gun Mechanic ...... 903 112 Mechanic, Automotive Auxiliaries ...... 907 113 Machine Gun Noncommissioned Officer, Mechanic, Automotive Chassis ...... 906 113 Heavy Machine Gun . ...'...... 605 78 Mechanic, Automotive Engine, Track Vehicle. 909 114 Machine Gun Noncommissioned Officer, Mechanic, Automotive Engine, Wheel Vehicle 905 113 Light Machine Gun ...... 604 78 Mechanic, Automotive Equipment, Army Air Machine Guriner, Antiaircraft ...... 605 78 Forces ...... 014 21 Machine Gunner, Antiaircraft Artillery, Gun.2601 127 Mechanic, Automotive (Second Echelon).... 014 21 Machine Gunner, Heavy ...... 605 78 MECHANIC, AUTOMOTIVE, TRACK VE Machine Gunner, Light ...... 604 78 HICLE (THIRD ECHELON)...... 966 123 Machine Gunner, Searchlight Crew ...... 763 97 MECHANIC, AUTOMOTIVE, WHEEL VE MACHINE OPERATOR (DESIGNATED HICLE (THIRD ECHELON),...... 965 122 MACHINE) ...... 302 55 Mechanic, Bombsight ...... 683 87 Machine Operator, Railway Shop ...... 114 34 Mechanic, Cargo Gear ...... 246 49 Machine Operator, Woodworking ...... 113 33 MECHANIC, CHASSIS, TRACK VEHICLE. 908 113 Machine Shop Foreman ...... 114 34 MECHANIC, CHASSIS, WHEEL VEHICLE. 906 113 MACHINIST ...... 114 34 Mechanic, Chief, Automotive ...... 337 56 MACHINIST'S HELPER ...... 431 62 Mechanic, Construction Equipment ...... 319 56 Mail Clerk (Postal) ...... 056 26 Mechanic, Dental ...... 067 27 Mail Orderly ...... 055 25 Mechanic, Diesel ...... 013 21 Maintenance Man ...... 121 35 Mechanic, Diesel, Locomotive .*...... 013 21 Maintenance, Man, Highway ...... 188 42 Mechanic, Diesel (Marine) ...... 477 65 Maintenance Mechanic, Shop ...... 341 57 Mechanic, Engine and Airplane ...... 747 94 Maintenance Technician, Medical Equipment. 229 46 Mechanic, Engine, Track Vehicle, Diesel .... 909 114 Maintenance Technician, Mine Supply...... 714 90 MECHANIC, ENGINE, TRACK VEHICLE.. 909 114 Manual and Toll Equipment Repairman, Cen MECHANIC, ENGINE, WHEEL VEHICLE tral Officer ...... 095 31 (GASOLINE) ...... 905 113 Marine Engine Mechanic ...... 477 65 Mechanic, Fabric and Dope...... 548 72 MARINE ENGINEER ...... 080 29 MECHANIC, FUEL INDUCTION ...... 926 117 MARINE ENGINEMAN ...... 839 107 Mechanic, General ...... 121 35 MARINE FIREMAN ...... 117 34 Mechanic, Glider ...... 559 72 MARINE OILER ...,.,,.....,,...... 141 37 Mechanic-Gunner^ Airplane ...... 748 94 139 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN Page SSN Page Mechanic-Gunner, Airplane Power Plant..... 1684 126 Message Center Chief (Below Division Level) 667 85 Mechanic-Gunner, Electrical, Airplane ...... 1685 126 MESSAGE CENTER CLERK...... 667 85 Mechanic-Gunner-Operator, Radio, Army Air' Messenger (see par. lOc, sec. I). Forces ...... 757 95 Messenger (Bugler) ...... 833 102 Mechanic-Gunner, Remote Control Turret . .. 580 75 Messenger-Dispatcher ...... 667 85 Mechanic, Gyrostabilizer ...... 1907 127 Meteorological Observer ...... 784 99 Mechanic, Hand and Shoulder Weapons...... 903 112 Meteorological Plotter ...... 784 99 Mechanic, Heavy Antiaircraft Artillery...... 915 115 Meteorologist ...... 787 100 Mechanic, Heavy Artillery ...... 914 115 MICROFILM EQUIPMENT REPAIRMAN... 158 39 Mechanic, Hydraulic, Airplane ...... 528 69 Microfilm or V-Mail Laboratory Technician... 016 21 Mechanic, Instrument Landing Equipment ... 933 118 MILITARY POLICEMAN ...... 677 — 85, Mechanic, Laundry Maintenance ...... 104 32 MILITARY POLICEMAN, OCCUPIED TER Mechanic, Light Artillery ...... 913 114 RITORY ...... 669 85 Mechanic, Link Celestial Navigation Trainer.. 969 123 Milling Machine Operator...... 302 . 55 Mechanic, Link Trainer ...... 593 77 Millwright ...... 342 57 Mechanic, Locomotive, Brake ...... 112 133 MILLWRIGHT, SAWMILL ...... 464 64 Mechanic, Machine Gun ...... 903 112 Mimeograph or Ditto Machine Operator...... 055 25 MECHANIC, MARINE ENGINE ...... 477 65 Mine Assembler, Submarine Mine...... 656 83 Mechanic, Motorcycle ...... 138 37 MINE DETECTOR OPERATOR...... 968 123 Mechanic, Motorcycle (Second Echelon)..... 014 21 Mine Loader, Submarine...... 656 83 Mechanic-Observer, Radar, Bombardment :...2867 129 Mine Planter ...... 722 • 90 Mechanic-Operator, Flexible Gunnery Trainer. 691 88 Mine, Submarine, Loader...... 656 83 Mechanic and Operator, Radio (AAF)...... 2756 128 MINE SUPPLY MAINTENANCE TECHNI- Mechanic, Power Turret and Gunsight...... 678 87 . CIAN ...... 714 90 Mechanic, Radar (All Types) (See Radar Me Mine Technician, Aerial ...... 582 76 chanic. ) Mine Yawl Coxswain ...... 546 71 Mechanic, Radar, Ground Equipment (Desig Mixer, Sound, Motion Picture...... 407 60 nated Set) ...... 775 98 Mobile Repair Unit Chief...... 925 117 Mechanic, Radar, Ground Loran ...... 948 120 MODEL MAKER ...... 136 37 Mechanic, Radio, Army Air 'Forces ...... 754 95 Molder ...... 129 35 Mechanic, Radio, Army Airways Communica Monotype Operator ...... 168 40 tions System ...... 778 99 Mortar Assistant, Heavy Mortar ...... 1607 125 Mechanic, Radio Teletype ...... 868 111 Mortar Assistant, Light Mortar ...... 607 78 Mechanic, Railway, General ...... 048 25 Mortar Gunner, Heavy Mortar...... 1607 125 Mechanic, Refrigeration ...... 322 56 Mortar Gunner, Light Mortar ...... 697 78 Mechanic, Remote Control Turret...... 960 122 Mortar Noncommissioned Officer, Light Mor Mechanic-Repairman, Petroleum Pumping tar ...... 607 78 Equipment ...... 487 66 Mechanic, Seacoast Artillery ...... 914 115 Motion Picture, Animation Artist ...... 130 36 Mechanic, Shop Maintenance ...... 341 57 Motion Picture Cameraman ...... 043 24 Motion Picture Cameraman, Animated ...... 285 53 Mechanic, Small Arms Weapons ...... 903 112 Motion Picture Electrician ...... ^...... 132 36 Mechanic, Tank, Minor Maintenance ...... 660 84 Motion Picture Equipment Repairman ...... 042 24 Mechanic, Target Airplane Motor ...... 014 21 Mechanic, Teletype ...... 239 48 Motion Picture Film Artist ...... 131 36 Mechanic, Tractor ...... 319 56 Motion Picture Film Recorder, Sound...... 208 45 Mechanic, Tractor (Diesel) ...... 013 21 Motion Picture Laboratory Technician ...... 134 36 MECHANIC, TURRET ...... 907 113 MOTION PICTURE PRODUCTION TECH Mechanic, Winch ...... 081 29 NICIAN ...... :...... 286 53 Mechanical Director Repairman, Heavy Anti Motion Picture Projectionist ...... 137 37 aircraft Artillery ...... :...... 917 115 Motion Picture Sound Editor ...... 287 53 Mechanical Draftsman ...... 071 28 Motion Picture Sound Mixer ...... 407 60 Medical Administrative Specialist (AAF).... 673 86 Motion Picture Sound Recorder ...... 208 45 MEDICAL AIDMAN ...... 657 84 Motion Picture Technician (AAF) ...... 286 53 Medical Basic ...... 657 84 'MOTOR INSPECTOR ...... 413 61 Medical Corpsman (AAF) ...... 657 84 Motor Repairman, Electric ...... 304 55 MEDICAL EQUIPMENT MAINTENANCE Motor Transportation Noncommissioned^ Officer 014 21 TECHNICIAN ...... 229 46 Motorboat Operator (Pioneer) ...... 729 91 MEDICAL LABORATORY TECHNICIAN... 858 110 Motorboat Operator (Pontoneer) ...... 817 103 MEDICAL NONCOMMISSIONED OFFICER 673 86 Motorboat Operator (Seaman) ...... 065 27 Medical Secretary ...... 213 45 MOTORCYCLE MECHANIC ...... 138 37 MEDICAL SUPPLY NONCOMMISSIONED Motorcycle Mechanic (Second Echelon)..... 014 21 OFFICER ...... :...... 825 104 Motorcycle Scout ...... 378 59 Medical Supply Technician (AAF)...... 825 104 MOTORCYCLIST ...... 378 59 MEDICAL TECHNICIAN ...... 409 61 Multigraph Operator ...... 128 35 MEDIUM TANK CREWMAN ...... 2736 128 MULTILITH OR MULTIGRAPH OPER MESS SERGEANT ...... 824 104 ATOR ...... 128 35 MESSAGE CENTER CHIEF (Division or Multilith Operator ...... 128 35 Highe-) ...... 674 86 MUNITIONS WORKER ...... 901 112 140 ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES

SSN Page SSN Page Music Librarian ...... 055 25 Panel and Code Clerk ...... 667 85 Musician, Instrumental ...... 442 63 Parachute Packer ...... 620 80 Parachute Packer, Target Airplane ...... 522 69 N Parachute Repairman ...... 620 80 Negative Cutter ...... 131 36 PARACHUTE RIGGER AND REPAIRMAN. 620 80 News Photographer ...... 152 38 Parachutist (see par. 16a, sec. I). Non-Electrical Instrument Repairman...... 098 31 PARTS CLERK, ARMAMENT ...... : 848 '109 Nurse, Male, Operating Room...... 861 110 PARTS CLERK, AUTOMOTIVE ...... 348 58 Nurse, Male, Practical...... 409 .61 Parts Clerk, Engineer Equipment...... 348 . 58 Patrolman, Pipe-line ...... 522 69 0 PATTERNMAKER, WOOD...... 148 38 Oboe Player ...... 175 41 Pattern Maker, Wood (Railway) ...... 046 24 OBSERVATION DRAFTSMAN ...... 1076 124 Personnel Clerk ...... 405 60 OBSERVATION STATION OPERATOR, PERSONNEL CONSULTANT ASSISTANT.. 289 54 COAST ARTILLERY ...... 578 75 Personnel Noncommissioned Officer...... 502 67 Observer, Aircraft, Ground ...... 518 68 PERSONNEL TECHNICIAN ...... 290 54 Observer, Director, Antiaircraft ...... 1645 . 125 Petroleum Laboratory Technician ...... 160 39 Observer, Flash Ranging ...... 576 74 Petroleum Products Gauger ...... 522 69 Observer, Height Finder ...... 692 88 Petroleum Products Safety Engineer ...... 486 66 Observer, Intelligence, Field Artillery ...... 577 74 PETROLEUM PUMPING EQUIPMENT RE Observer, Intelligence, Reconnaissance ...... 733 92 PAIRMAN ...... 487 66 Observer, Intelligence, Scouting ...... 761 96 PETROLEUM STORAGE TECHNICIAN ... 485 66 Observer-Mechanic, Radar, Bombardment ....2867 129 Petroleum Test Engine Operator ...... 160 39 Observer, Radar, Sea Search ...... 866 111 PHARMACIST ...... 149 38 Observer, Sound Ranging ...... 586 76 PHARMACY TECHNICIAN ...... 859 110 Observer, Weather ...... 784 99 Photo Interpreter ...... 070 27 Observer, Weather, Teletype Technician ..... 790 100 Photoengraving Photographer ...... 107 32 Occupational Military Policeman...... 669 85 Photogrammetrist ...... 004 21 OCCUPATIONAL COUNSELOR .'...... 262 50 PHOTOGRAPHER ...... 152 38 OFFICE MACHINE SERVICEMAN...... 282 52 Photographer, Aerial ...... 940 119 OFFICER CANDIDATE ...... 625 81 Photographer, Copy Cameraman (Lithograph Oiler. Locomotive ...... 112 33 ing) ...... 107 32 Oiler^ Marine ...... 141 37 Photographer, Developer ...... 945 119 OPERATIONS NCO ...... 814 103 Photographer-Gunner, Aerial ...... 939 119 Operations Specialist, Air ...... 791 100 Photographer, News ...... 152 38 OPTICAL INSTRUMENT REPAIRMAN.... 962 122 Photographer, Photoengraving ...... 107 32 OPTICIAN ...... 365 58 Photographer, Portrait ...... 152 38 OPTOMETRIST ...... 452 63 Photographer, Printer ...... 945 119 Orchestra Leader ...... 020 22 Photographer, Retouching Artist ...... 945 119 Orderly ...... 590 76 Photographic Chemist ...... 292, 54 Orderly, Ambulance ...... 345 57 Photographic Chief ...... 945 119 Orderly, Hospital .....:...... 657 84 Photographic Darkroom Man ...... 945 119 Orderly, Veterinary Ambulance ...... 700 88 Photographic Equipment Maintenance Man... 042 24 Ordnance Noncommissioned Officer...... 815 103 Photographic Laboratory Chief ...... 945 119 ORDNANCE SUPPLY NONCOMMIS Photographic Laboratory Supervisor ...... 945 119 SIONED OFFICER ...... 815 103 PHOTOGRAPHIC LABORATORY TECH Ordnance Supply Technician (AAF) ...... 815 103 NICIAN ...... 945 H9 Organist ...... 442 63 PHOTOLITHOGRAPHER ...... 107 32 Orientation Specialist ...... 274 52 Photostat Operator or Blueprinter...... 028 22 ORTHOPEDIC MECHANIC ...... 366 58 Phototopographer, Aerial ...... 004 21 Oven Fireman ...... 590 76 Physical Reconditioning instructor..'...... 283 53 Oxyacetylene Welder ...... 256 49 PHYSICAL THERAPY TECHNICIAN...... 072 28 Oxygen and Acetylene Plant Foreman ...... 719 90 PHYSICS LABORATORY ASSISTANT..... 160 39 OXYGEN AND ACETYLENE PLANT OP Piccolo Player ...... 437 62 ERATOR ...... 719 90 Pigeon Trainer ...... 560 73 PIGEONEER ...... 560 73 Piling Foreman ...... 459 64 Packer, Air ...... 967 ]13 Pilot, Airplane ...... 770 98 PACKER, ANIMAL ...... 712 89 Pilot, L Boat ...... 547 71 Pack Artillery Gun Crewman ...... 1531 ]">5 Pilot, Liaison ...... 772 98 PACK DRIVER ...... 565 73 Pilot. Service ...... 773 98 Packer, High Explosives ...... 901 112 PIONEER ...... 729 91 Pat-king Case Maker ...... 050 25 Pipe Fitter ...... 164 39 PACKMASTER ...... 713 90 Pipe Fitter, Railway ...... 164 39 Painter (AAF) ...... 144 38 Pipe-line Construction Foreman ...... 059 26 Painter, Automobile ...... 144 38 Pipe-line Foreman, Dredge ...... 116 34 PAINTER, GENERAL ...... 144 38 Pipe-lire Patrolman ...... 522 69 PAINTER, SIGN ...... 145 38 Planer Operator ...... 302 55 lUOOUN O—44- ——10 141 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN Pag*! R SSN Page Plant Operator, Oxygen and Acetylene...... 719 00 RADAR CREWMAN (DESIGNATED SET). 514 68 Planting Aft Detail ...... 722 90 RADAR MECHANIC, BEACON ...... 851 109 Planting Detail ...... 722 90 RADAR MECHANIC BOMBARDMENT ... 867 111 Planting Port Detail ...... 722 90 RADAR MECHANIC (GCA) ...... 863 110 Planting Starboard Detail...... 722 90 RADAR MECHANIC (GEE) ...... 860 110 Platoon Sergeant (see par. lOc, sec. I). RADAR MECHANIC, GROUND EQUIP PLAYWRIGHT ...... 288 53 MENT (DESIGNATED SET) ...... 775 98 Plotter, Aircraft Warning ...... 510 67 RADAR MECHANIC, GROUND LORAN .. 948 120 Plotter, Coast Artillery ...... 724 91 RADAR MECHANIC (IFF) ....:...... 862 110 Plotting Board Installer-Repairman, Aircraft RADAR MECHANIC, NAVIGATION ...... 853 109 Warning ...... ; ...... 097 31 RADAR MECHANIC, NIGHT FIGHTER ... 850 109 Plotting Board Supervisor, Aircraft Warning.. 510 67 RADAR MECHANIC, RCM ...... 852 109 PLUMBER ...... 164 39 RADAR MECHANIC, SEA SEARCH ...... 854 109 Pneumatic Riveter ...... 100 31 RADAR MECHANIC, SEA SEARCH (LAB) 856 109 PODIATRIST ...... 422 61 RADAR MECHANIC, TROOP CARRIER .. 849 109 Policeman, Military ...... 677 86 RADAR OBSERVER-MECHANIC, BOM Policeman, Military", Occupied Territory..... 669 85 BARDMENT ...... 2867 129 PONTONEER ...... 817 103 RADAR OBSERVER, SEA SEARCH ...... 866 111 PORTABLE POWER GENERATOR OPER Radar Operator (Designated Set)...... 514 68 ATOR ...... 846 108 RADAR OPERATOR, AN/TPQ (DESIG Portable Power Generator Operator, Antiair NATED MODEL) ...... 842 107 craft Artillery, Automatic Weapons...... 601 77 RADAR OPERATOR, AN/TPT (DESIG Portable Power Generator Operator, Antiair NATED MODEL) ...... 843 107 craft Artillery; Automatic Weapons, Radar.. 514 68 RADAR REPAIRMAN, AIRBORNE EQUIP Portable Power Generator Operator, Search MENT (DESIGNATED SET) ...... 955 121 light ...... 763 97 RADAR REPAIRMAN, AN/TPT (DESIG PORTABLE POWER GENERATOR RE NATED MODEL) ...:...... 974 124 PAIRMAN ...... 506 67 RADAR REPAIRMAN, GUNLAYING Portrait Photographer ...... 152 38 EQUIPMENT (DESIGNATED SET)1 ..... 952 121 POSTAL CLERK ...... 056 26 Power Generator Operator, Portable ...... 846 108 RADAR REPAIRMAN, REPORTING ' Power Generator Operator, Searchlight ..... 763 97 EQUIPMENT (DESIGNATED SET)' ..... 953 121 Power Lineman ...... 165 39 Radiator Repairman, Automobile ...... 201 44 Power Plant Electrician ...... '...... 258 49 Radio Dispatcher, Police ...... 677 86 Power Plant Installer ...... 166 40 Radio Electrician ...... 648 83 Power Plant Mechanic, Airplane ...... 684 87 Radio Inspector (see appropriate Radio Repair POWER SHOVEL OPERATOR ...... 064 27 Specialists)'. POWER TURRET AND GUNSIGHT RADIO INTELLIGENCE CONTROL CHIEF 543 71 MECHANIC ...... 678 87 Radio Intelligence Control Technician (AAF) 543 71 POWER TURRET AND GUNSIGHT RADIO MECHANIC, ARMY AIR FORCES 754 93 REPAIRMAN ...... 681 87 RADIO MECHANIC, ARMY AIRWAYS POWERHOUSE ENGINEER ...... 077 29 COMMUNICATIONS SYSTEM ...... 778 99 POWERMAN...... 166 4tf RADIO MECHANIC, PQ TARGET AIR Pressman, Job ...... 169 40 PLANE ...... 993 124 Pressman, Lithographic ...... 167 40 RADIO OPERATOR, ARMY AIRWAYS PRINTER ...... ;...... 168 40 COMMUNICATIONS SYSTEM ...... 760 96 PROCESS BACKGROUND SUPERVISOR... 449 63 RADIO OPERATOR, ARMY AIR FORCES. 756 95 Processor ...... 055 25 RADIO OPERATOR, ANi/MRQ (DESIG PROJECTIONIST, MOTION PICTURE..... 137 37 NATED MODEL) ...... 1766 127 Projector Repairman ...... 206 44 RADIO OPERATOR, CONTROL NET Proofreader ...... 055 25 SYSTEM ...... 759 96 Propeller Mechanic ...... 687 88 Radio Operator, Fixed Station .;...... 777 ' 99 PROSTHETIC DENTAL SUPPLY CLERK... 847 108 RADIO OPERATOR, HIGH SPEED, Provost Sergeant ...... :...... 677, 86 AUTOMATIC ...... 777 99 PSYCHIATRIC SOCIAL WORKER...... 263 50 RADIO OPERATOR, HIGH SPEED, Psychological Assistant ...... 289 54 MANUAL ...... 766 97 Public Relations Writer ...... 274 52 RADIO OPERATOR, INTERMEDIATE PUMP OPERATOR ...... 220 46 SPEED ...... 740 93 Pump Station Operator ...... 220 46 RADIO OPERATOR, LOW SPEED ...... 776 98 Pumping Equipment Repairman, Petroleum.. 487 66 RADIO OPERATOR AND MECHANIC, Pumpman, Oil ...... ;...... 220 46 ARMY AIR FORCES ...... 2756 128 Pumpman, Water ...... 220 46 RADIO OPERATOR-MECHANIC-GUNNER, Punch and Shear Operator:...... 030 23 ARMY AIR FORCES ...... 757 95 PURCHASING AGENT ...... 371 59 Radio Program Supervisor ...... 442 63 RADIO REPAIRMAN ...... 648 83 RADIO REPAIRMAN, AIRCRAFT Quartermaster ...... 065 27 EQUIPMENT ...... 647 82 QUARTERMASTER SUPPLY TECHNICIAN 821 104 RADIO REPAIRMAN, FIXED STATION .. 649 83 142 ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES

SSN Page SSN Page Radio Repairman, Frequency Modulation Recruiting Substation Commander...... 502 67 Equipment ...... 648 83 Reel Operator, Tow Target ...... 688 88 RADIO REPAIRMAN, AN/MRQ (DESIG Reel Unit Operator ...... 641 82 NATED MODEL) ...... 1648 126 REFRIGERATION MECHANIC ...... 322 56 RADIO REPAIRMAN, SINGLE CHANNEL Refueling Unit Operator ...... 932 118 TELETYPE ...... 792 100 Rehabilitation Counselor ...... 262 50 RADIO REPAIRMAN, VERY HIGH FRE REMOTE CONTROL TURRET MECHANIC 960 122 QUENCY ...... 951 121 REMOTE CONTROL TURRET MECHANIC- Radio Sergeant ...... 542 71 GUNNER ...... 580 75 Radio Target Boat Coxswain ...... 703 89 REMOTE CONTROL TURRET REPAIR Radio Telephone Operator, Reconnaissance MAN ...... 575 74 Car ...... 733 92 Renovator, Ammunition ...... 949 120 RADIO TELETYPE MECHANIC...... 868 m Repairman, Airplane Engine ...... 762 97 Radio Tender, Amphibian Tank ...... 3736 129 Repairman, Airplane and Engine Electrical Radio Tender, Antitank ...... 610 79 Accessories ...... 958 122 Radio Tender, Light Tank ...... 1736 126 Repairman, Airplane Mechanical Instrument. 959 122 Radio Tender, Medium Tank ...... 2736 128 Repairman, Automatic Pilot and Bombsight.. 574 74 Radio Tender, Reconnaissance Car ...... 733 92 Repairman, Automotive (AAF) ...... 965 122 Radiology Technician (AAF)...... 264 51 Repairman, Balloon Envelope ...... 619 80 RADIOSONDE OPERATOR ...... 942 119 Repairman, Bombsight and Automatic Pilot.. 574 74; Railway Brake Inspector ...... 048 25 Repairman, Canvas Cover...... 044 24 Railway Brakeman ...... 033 23 Repairman. Carburetor, Airplane ...... 956 121 Railway Car Carpenter ...... 046 24 Repairman, Control System, Heavy Antiair Railway Car Distributor ...... 047 25 craft Artillery ...... "...... 919 116 Railway Car Mechanic ...... 048 25 Repairman, Cryptographic (Designated Railway Conductor ...... 058 26 Equipment) ...... 801 101 Railway Dispatcher ...... 069 27 Repairman, Director, Electrical, Heavy Anti Railway Draftsman ...... 071 28 aircraft Artillery ...... 899 112 Railway Installer-Repairman ...... 238 48 Repairman, Electric Motor ...... 304 55 Railway Locomotive Mechanic, General...... 112 33 Repairman, Electrical Accessories, Airplane Railway Mechanic, General ...... 114 34 and Engine ...... 958 122 Railway Mechanic, General (Car) ...... 048 25 Repairman, Fire Control, Light Antiaircraft Railway Section Hand ...... 199 43 Artillery ...... 918 115 Railway Shop Dispatcher ...... 205 44 Repairman, Fuel Induction ...... 926, 117 Railway Shop Engineer ...... 205 44 Repairman, Fuel Cell ...... 665 85 Railway Signal Mechanic ...... <...... 181 41 Repairman, Gas Mask ...... 609 79 RAILWAY SIGNAL OPERATOR ...... 185 41 Repairman, Gyro Instrument, Airplane...... 961 122 Railway Signal Supervisor ...... 181 41 Repairman, Height Finder ...... 921 116 Railway Station Agent ...... 236 47 Repairman-Installer, Switchboard, Manual ... 232 47 Railway Storekeeper, Chief ...... 769 98 Repairman-Installer, Telephone and Telegraph 097 31 Railway Switchman ...... 033 23 Repairman, Instrument, Electrical ...... 338 57 Railway Towerman ...... 185 41 Repairman, Instrument, Fire Control ...... 922 116 Railway Traffic Man ...... 047 25 Repairman, Leather ...... 609 79 Railway Transportation Noncommissioned Repairman, Mechanical Director, Heavy Anti Officer (see par. lOc, sec. I). aircraft Artillery ...... 917 115 Railway Yard Foreman ...... 265 51 Repairman, Optical Instrument ...... 962 122 Range Section Noncommissioned Officer, Anti Repairman. Parachute ...... 620 80 aircraft ...... 527 69 Repairman, Petroleum Pumping Equipment.. 487 66 RANGE SECTION OPERATOR, ANTIAIR Repairman, Portable Power Generator...... 506 67 CRAFT ...... 1645 125 Repairman, Power Turret and Gunsight...... 681 87 RANGE SECTION OPERATOR, COAST Repairman, Radar, Airborne Equipment (Des ARTILLERY ...... 724 91 ignated Set) ...... 955 121 Range Setter, Coast Artillery...... : 608 78 Repairman, Radar, AN/TPT (Designated Range Telephone Operator. Coast Artillery... 578 75 Model) ...... "...... 974 124 Reader, Coast Artillery Observation Station... 578 75 Repairman, Radar, Gunlaying Equipment Receiver Attendant, Radio ...... 649 83 (Designated Set) ...... 952 121 Receiving and Shipping Checker...... 835 106 Repairman, Radar, Reporting Equipment Reconnaissance Agent ...... 761 96 (Designated Set) ...... 953 121 Reconnaissance Car Commander ...... 733 92 Repairman, Radio ...... 648 83 RECONNAISSANCE CAR CREWMAN..... 733 92 Repairman, Radio, Aircraft Equipment ..... 647 82 Reconnaissance Noncommissioned Officer..... 761 96 Repairman, Radio, Fixed Station ...... 649 83 Reconnaissance or Scout Car Driver...... 733 92 Repairman, Radio, AN/MRQ (Designated Record Clerk ...... 055 25 Model) ...... 1648 126 Recorder, Coast Artillery Observation Station. 578 75 Repairman, Radio, Very High Frequency .... 951 121 Recorder, Sound, Field Artillery ...... 836 106 Repairman, Remote Control Turret ...... 575 74 Recording Equipment Maintenance Man, Repairman,. Supercharger, Airplane ...... 964 122 Sound ...... 207 45 Repairman, Tabulating Machine ...... 425 62

143 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN Page SSN Page Repairman, Wire, Very High Frequency..... 950 120 Shaper Operator ...... 302 55 REPEATERMAN, TELEPHONE ...... 187 41 Shear and Punch Operator...... ^.... 030 23 Reporter ...... 274 52 SHEET METAL WORKER...... 201 44 Retouching Artist, Photographic ...... 945 119 Sheet Metal Worker, Airplane...... 555 72 Rifle Noncommissioned Officer ...... ;...... 745 —- 94 Ship Carpenter ...... 202 44 Rifle Noncommissioned Officer, Automatic ... 746 94 SHIP FITTER ...... ;...... 478 65 RIFLEMAN ...... 745 94 Shipping Clerk '...... 835 106 Rifleman, Automatic ...... 746 94 Shoe Repair Superintendent...... 530 70 RIGGER ...... 189 42 SHOE REPAIRMAN ...... 204 44 Rigger, Balloon ...... 619 80 SHOP CLERK ...... 457 64 Riveter, Pneumatic ...... 100 31 SHOP ENGINEER, RAILWAY ...... 205 44 .Road Foreman,.Engine, Assistant ...... 110 33 SHOP MAINTENANCE MECHANIC ...... 341 57 Road Grader Operator ...... 359 58 Sign Painter ...... 145 38 Rock Crusher Operator ...... 359 58 SIGNAL MECHANIC, RAILWAY ...... 181 41 Rocket Launcher ...... 745 94 Signal Noncommissioned Officer...... i... 542 71 RODMAN AND CHAINMAN, SURVEYING. 191 42 Signal Operator, Railway...... 185 41 SIGNAL SUPPLY TECHNICIAN...... :. 581 75 Signalman, Visual ...... 765 97 SADDLE AND HARNESS MAKER...... 192 42 Single Channel Teletype Radio Repairman.... 792 100 Safety Engineer, Petroleum Products ...... 486 66 Skier (Use appropriate Military Occupational SAFETY INSPECTOR ...... 486 66 Specialty). SALES CLERK ...... 373 59 SMALL ARMS WEAPONS MECHANIC ... 903 112 Salvage Diver ...... 454 63 SMALL BOAT OPERATOR ...... 118 35 Salvage Inspector ...... 194 43 Smoke Generator Noncommissioned Officer. ... 731 91 Salvage Man ...... 194 43 SMOKE GENERATOR OPERATOR...... 731 91 Salvage Master ...... 454 63 Snare Drummer ...... 435 62 Salvage Noncommissioned' Officer ...... 194 43 Social Worker, Psychiatric ...... 263 50 SALVAGE REPAIR NONCOMMISSIONED Soils Technician ...... 160 39 OFFICER ...... 530 70 SOUND CUTTER, MOTION PICTURE..... 287 53 SALVAGE TECHNICIAN ...... 194 43 SOUND EDITOR, MOTION PICTURE..... 287 53 Salvage Technician, Bomb ...... 924 117 Sound Mixer, Motion Picture ...... 407 60 SANITARY TECHNICIAN ...... 196 . 43 SOUND PROJECTOR REPAIRMAN ...... 206 44 Sawmill Foreman ...... 459 64 Sound Ranging Chief ...... 586 76 SAWMILL MACHINE OPERATOR...... 459 64 SOUND RANGING OBSERVER ...... 586 76 Sawmill Millwright ...... 464 64 SOUND RECORDER, FIELD ARTILLERY. 836 106 Saxophone Player ...... '...... 439 . 62 SOUND RECORDER, MOTION PICTURE., 208 45 SCOUT ...... 761 96 SOUND RECORDING EQUIPMENT MAIN Scout Car Commander ...... 733 92 TENANCE MAN ...... 207 45 Scout Car Crewman ...... 733 92 Sound Transmission Electrician ...... 415 61 Scout, Motorcycle ...... 378 59 SPECIAL ASSIGNMENT ...... 564 73 Script Writer ...... 288 53 Special Effects Supervisor ...... 449 63 SEACOAST GUN DATA COMPUTER ...... 572 74 Special Service School Instructor...... 659 84 SEAMAN ...... 065 27 SPECIAL VEHICLE OPERATOR ...... 932 118 SEAMAN, LANDING CRAFT ...... 838 106 Spotter, Coast Artillery Observation Station.... 578 75 Searchlight Control Chief ...... 946 120 Squad Leader (See par. lOc, sec. I). SEARCHLIGHT CREWMAN ...... 763 97 Stable Orderly ...... ;..;.... 590 76 SEARCHLIGHT ELECTRICIAN ...... 635 82 STABLE SERGEANT ...... 710 89 Searchlight Operator ...... 763 97 Station Agent, Railway ...... 236 47 Searchlight Master Gunner ...... 832 105 STATIONARY ENGINEER ...... 082 29 SEARCHLIGHT NONCOMMISSIONED STATIONARY FIREMAN ...... 084 30 OFFICER ...... 946 120 Statistical Clerk ...... 055 25 Section Foreman, Railway ...... 199 43 Steam Locomotive Engineer ...... 110 33 SECTION HAND, RAILWAY ...... 199 43 Steamfitter ...... 164 39 Section Leader (see par. lOc, sec. I). Steel Worker, Structural ...... 100 31 Security Intelligence Agent ...... 301 55 STENOGRAPHER ...... 213 45 Security Intelligence Special Agent ...... 301 55 Stenotypist ...... 213 45 Security Noncommissioned Officer ...... 745 94 Sterilization and Bath Foreman ...... 706 89 Security Noncommissioned Officer, Automatic Sterilization Operator ...... 706 89 Rifle ...... ; 746 94 Sterilizer Operator, Chief ...... 103 32 Senior Technical Instructor ...... 659 84 Stevedore Foreman ...... 271 51 Sergeant Major ...... 502 67 Steward ...... 819 103 SERVICE PILOT ...... 773 98 Steward, Commissary ...... 819 103 Serviceman, Automobile ...... 316 55 STILL OPERATOR ...... 479 66 Serviceman, Construction Equipment (AAF). 316 55 Stillman ...... 479 66 Serviceman, Office Machine ...... 282 52 Stillman Helper ...... 479 66 SERVO MECHANIC, PQ TARGET AIR Stock Clerk ...... 835 106 PLANE ...... 994 124 Stock Control Clerk ...... 835 106 SEWING MACHINE OPERATOR ...... 200 44 Stock Record Clerk ,.,....,...„...... , 835 106 144 ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES

SSN Page SSN Pact- STONEMASON ...... 214 45 Tank Gunner, Amphibian ...... 3736 129 Storage Battery Electrician...... 078 29 Tank Gunner, Light ...... 1736 126 Storekeeper, Chief, Railway ...... 769 98 Tank Gunner, Medium ...... 2736 128 Structural Draftsman ...... 074 28 TANK MECHANIC, MINOR MAINTE STRUCTURAL STEEL WORKER...... 100 31 NANCE ...... 660 84 STUDENT ...... 629 81 Tank Mechanic, Suspension and Power Train 908 113 SUBMARINE CABLE STATION OPER Target Airplane Servo Mechanic, PQ...... 994 124 ATOR ...... 209 45 Target Airplane Motor Mechanic ...... 014 21 SUBMARINE CABLE STATION Target Airplane Parachute Packer ...... 522 69 TECHNICIAN ...... 197 43 Target Airplane Radio Mechanic, PQ ...... 993 124 SUBMARINE MINE LOADER ...... 656 83 Target Airplane Radio Repairman ...... 647 82 SUBMARINE MINE PLANTER ...... 722 90 TEAMSTER ...... 235 47 Submarine Mine Supply Maintenance Man... 714 90 Technical Inspector (Third and Fourth Eche SUBSISTENCE NCO ...... 820 - 104 lon Repair) ...... 925 117 SUBSTATION ELECTRICIAN ...... 258 49 Technical Instructor (Army Air Forces) ..... 659 84 SUBSTATION OPERATOR ...... 184 41 Technical Supply Clerk ...... 826 105 Superintendent, Canvas Repair ...... 530 70 Technical Supply Noncommissioned Officer... 826 105 Superintendent, Classifier, Salvage ...... 194 43 Technical Writer ...... 274 52 Superintendent, Fumigation and Bath ...... 591 76 TELEGRAPH OPERATOR ...... 236 4-7 Superintendent, Labor ...... 356 58 Telegraph Printer Operator ...... 237 47 Superintendent, Shoe Repair ...... 530 70 Telephone and Telegraph Cable Splicer .... 039 24 Superintendent, Waste Disposal ...... 194 43 Telephone and Telegraph Equipment Repair SUPPLY CLERK ...... 835 106 man (AAF) ...... 095 31 Supply Noncommissioned Officer ...... 821 104 Telephone Equipment Installer-Repairman, Supply Noncommissioned Officer, Medical.... 825 104 Local Battery ...... 097 31 Supply Noncommissioned Officer, Ordnance.. 815 103 Telephone and Telegraph, Installer-Repair Supply Technician, Army Air Forces...... 826 105 man ...... 097 31 Supply Technician, Quartermaster ...... 821 104 Telephone and Telegraph Installer, Toll .... 384 59 Supply Technician, Engineer ...... 583 . 7fj Telephone and Telegraph Lineman .....;... 238 48 Supply Technician, Signal ...... 581 75 Telephone and Telegraph Wire Chief ...... 261 50 SURGICAL TECHNICIAN ...... 861 110 Telephone Insideman ...... 095 31 Surgical Technician, Veterinary...... 250 49 Telephone Inspector ...... 261 50 SURVEY AND INSTRUMENT MAN...... 228 46 TELEPHONE OPERATOR ...... 309 55 SURVEY AND INSTRUMENT NONCOM Telephone Operator, Field ...... 650 83 MISSIONED OFFICER, FIELD ARTIL- Telephone Operator, Range, Coast Artillery.. 578 75 ERY ...... 577 74 Telephone Repeaterman ...... ;..... 187 41 SURVEYOR ...... 227 46 TELEPHONE SWITCHBOARD OPERATOR 650 83 Surveyor, Party Chief...... 230 47 TELETYPE MECHANIC ...... 239 48 SURVEYOR, TOPOGRAPHIC ...... 230 47 Teletype Mechanic, Radio ...... 868 111 Switchboard Installer, Manual, Telephone and TELETYPE OPERATOR ...... 237 47 Telegraph...... 232 47 Teletype Technician-Weather Observer...... 790 10&' SWITCHBOARD INSTALLER-REPAIRMAN. Teletypewriter Switchboard Operator...... 237 47 MANUAL ...... 232 47 Terminal Operator Assistant, Petroleum Prod Switchboard Operator, Central Office...... 309 55 ucts ...... 485 66 Switchboard Operator, Field ...... 650 83 Terminal Supervisor, Petroleum Products ....485 66 Switchboard Operator, Flash ...... 576 74 Theodolite Observer ...... 784 99 Switchboard Operator. Generator ...... 092 30 THIRD RAIL REPAIRMAN ...... 281 52 Switchman, Railway ...... 033 23 Timber Cruiser ...... 466 65 Tinsmith ...... 201 44- TIRE REBUILDER ...... 240 48 TABULATING MACHINE OPERATOR .... 400 60 Toll Telephone and Telegraph Installer...... 384 59 TABULATING MACHINE REPAIRMAN... 425 62 Tool Dresser ...... 024 22 TAILOR ...... 234 47 Tool Designer ...... 114 34 Tallyman, Lumber Grader ...... 462 64 Tool Maker ...... '...... 114 34 Tank and Automotive Electrician ...... 912 114 TOOLROOM KEEPER ...... 242 48 Tank" Commander, Amphibian ...... 3736 129 Topman ...... 479 66 Tank Commander, Light ...... 1736 126 Topographic Draftsman ...... 076 28 Tank Commander, Medium ...... 2736 128 Topographic Surveyor ...... 230 47 Tank Crewman, Amphibian ...... 3736 129 Topographical Computer ...... 243 43 Tank Crewman, Light ...... 1736 126 Torpedo Mechanic, Aerial ...... 662 84 Tank Crewman, Medium ...... 2736 128 TOW TARGET REEL OPERATOR...... 688 83 Tank Destroyer Crewman ...... 610 79 Towerman, Railway ...... 185 41 Tank Driver, Amphibian ...... 3736 129 Toxic Gas Guard...... 786 99 Tank Driver, Light ...... 1736 126 TOXIC GAS HANDLER ...... 786 99 Tank Driver, Medium ...... 2736 128 Toxicologist ...... 292 54 Tank Electrician ...... 912 114 Tracer ...... 070 27 Tank Engine Mechanic, Diesel ...... 909 114 Tracker, Coast Artillery Observation Station.. 578 75 Tank Engine Mechanic, Minor Maintenance.. 660 84 Tractor Driver ...... 931 113 145 MILITARY OCCUPATIONAL CLASSIFICATION OF ENLISTED PERSONNEL

SSN Page W SSN P»«

146 5 Feb 46 TM 12-427 C3

SUPPLEMENTAL ALPHABETICAL INDEX OF MILITARY OCCUPATIONAL SPECIALTIES

GUN CREWMAN, HEAVY ARTILLERY Cod, Pag. Code Page (SINGLE LOAD)...... 873 112 ACCOUNTANT...... 268 51 Gunner, Heavy Artillery (Single Load)..... 873 112 Acetylene Generating Plant Operator...... 719 90A Gunner, Rocket...... 596 77 AIR TRAFFIC SERVICE TECHNICIAN. 996 126 AIRCRAFT APPROACH CONTROLLER H GCA...... 561 72A Aircraft Loading Technician...... 967 123 Heavy Artillery Gun Crewman (Single Ammunition Handler, Heavy Artillery (Sin Load)...... 873 112 gle Load)...... 873 112 Heavy Weapons Noncommissioned Officer. . 812 102A Ammunition Noncommissioned Officer, ~- High Speed Tractor Mechanic, Minor Main Heavy'Artillery (Single Load)...... 873 112 tenance ...... 660 84 Antiaircraft Artillery Mechanic...... 915 115 Historical Technician...... 274 52 Armament Parts Clerk...... 348 58 Hydrogen and Carbon Dioxide Generating ARTILLERY MECHANIC, ANTIAIR Plant Operator...... 719 90A CRAFT ARTILLERY...... 915 115 Automotive Parts Clerk...... 348 58 I INFORMATION AND EDUCATION SPECIALIST...... 2274 129 Cannoneer, Heavy Artillery (Single Load). . 873 112 INFORMATION CENTER EQUIPMENT CAVALRY TROOPER...... 9745 130C TECHNICIAN...... 637 82 Coast Artillery Gun Crewman...... 608 78A INFORMATION SPECIALIST (Desig Consultant, Personal Affairs...... 1274 126 nated Subject)...... 274 52A Control Center Technician. (See 768.) Instrument Man, Survey (Engineering).... 227 46 Controller, Aircraft Approach GCA...... 561 72A INTERCEPT CONTROL TECHNICIAN. 768 98A

D DENTAL ASSISTANT. 855 109 Link Celestial Navigation Trainer me chanic. (See 969.)...... E Link Celestial-Navigation Trainer Operator. (See 970.)...... Education and Information Specialist...... 2274 129 Loading Technician, Aircraft...... 967 123 Engineer Parts Clerk...... _. 348 58 Equipment Repairmen, Telephone and Tele M graph ...... 646 82A Marine Parts Clerk...... 348 58 Mechanic, Antiaircraft Artillery...... 915 115 Mechanic, Rotary Wing...... 995 125 Mechanic, Synthetic Trainer (Designated Field Artillery Fire Direction Center Opera Type)...... 969 123 tor...... 645 82A Mechanic, Telephone and Telegraph Equip Field Artillery Gun Crewman, Heavy ment (AAF)...... 095 31 (Multiple Load)...... 845 108 Multiplex Projector Operator...... 004 21 Field Artillery Gun Crewman, Heavy (Single Load)...... 873 112 O Field Artillery Gun Crewman, Light...... 844 108. Field Artillery Gun Crewman, Medium. . . . 864 111 OPERATOR, RADIOTELEPHONE, Field Artillery Gun Crewman, Pack...... 1531 126A FIRE CONTROL...... 599 77 Field Repeaterman...... 187 42 Oxygen Generating Plant Operator...... 719 90A Fire Control Radiotelephone Operator. .... 599 77 FIRE DIRECTION CENTER OPERA TOR ...... 645 82A PARTS CLERK...... 348 58 Fixed Plant Repeaterman...... 1187 126 Parts Clerk, Armament...... 348 58 FLIGHT MAINTENANCE GUNNER.... 748 94 Parts Clerk, Automotive...... 348 58 Foreman, Gas Generating Plant...... 719 90A Parts Clerk, Marine Equipment...... 348 58 Parts Clerk, Quartermaster Equipment.... 348 58 Parts Clerk, Railway Equipment...... 348 58 PERSONAL AFFAIRS CONSULTANT. . 1274 126 GAS GENERATING PLANT OPERA PERSONAL EQUIPMENT TECHNI TOR ...... 719 90A CIAN...... 594 77 GRAVES REGISTRATION TECHNI PHOTO INTERPRETER...... 890 112 CIAN...... 980 125 Plant Maintenance Mechanic...... 341 57 Ground Safety Technician (AAF)...... 486 66

AGO 3006A 146A TM 12-427 5 Feb 46 C3

Portable Power Generator Operator, Anti Cade Page SUPPLY NONCOMMISSIONED OFFI- Code Page aircraft Artillery, Gun...... 1645 127 CER...... 821 104A Supply Technician...... 821 104A Switchboard Installer-Repairman Manual Quartermaster Supply Technician...... 821 104A (See 095.) SYNTHETIC TRAINER MECHANIC R (Designated Type)...... 969 123 RADIO OPERATOR, MARINE...... 3766 130B Synthetic Trainer Operator-Instructor (Des RADIO SECURITY TECHNICIAN..... 977 124 ignated Type)...... 970 123 Radiotelephone Operator, Fire Control.... 599 77 Repairman, Telephone and Telegraph Equip ment...... 646 82A REPEATERMAN, FIXED PLANT. .... 1187 126 Technical Intelligence Specialist...... 301 55 ROCKET CREWMAN...... 596 77 TELEPHONE AND TELEGRAPH Rockateer...... :...... 596 77 EQUIPMENT REPAIRMAN...... 646 82A ROTARY WING MECHANIC (HELI Topographic Equipment Mechanic...... 167 40 COPTER) ...... 995 125 Traffic Service Technician, Air...... 996 126 Transit Man (Engineering)...... 227 46 Trooper, Cavalry...... 9745 130C Security Technician, Radio...... 997 124 Stereocomparagraph Operator...... 004 21 W Storage Battery Electrician (Automotive). . 912 114 Writer, Military Subjects...... 274 52 A Storage Battery Electrician (communica tions) ...... 087 29

146B AGO 3006A 30 Jun 45 TM 12-42? C 2 Appendix I Conversion of Deleted Specification Serial Numbers This table contains a listing of all deleted Specification Serial Numbers (SSN) which formerly appeared in WD circulars and memos, AR 615-26 and its supplements and TM 12-427 dated 12 July. 1944 and which are no longer authorized to designate Military Occupational Specialities.

SSN deleted Suggested ju&smules SSN

AGO 283A 147 TM 12-427 30 Jim 45 C 2

SSN Jetftftl Suggested substitutes S52V deletet. 5u£gesteG substitute! 308...... 213 504...... 188, 901 or appropriate gun- 310...... 188 crewman. 311...... 188, 590 507...... 590 314...... 065, 729, 817, 838 508...... 188, 846 315...... 188, 359 512...... 510 317...... 168 513...... 750, 925 . 318...... 168 515...... 510 323...... 34H. 505, 581, 583, 714, 815, 516...... 510 821, 825, 826, 835, 848 517...... 510 324...... 348, 505, 581, 583, 714, 815, 519...... 144 . 821, 8 5, 826, 835, 842 520...... 170,510 333...... 409,861 525...... 535,719 334...... 256 531...... Use appropriate gun-crewman. 339...... 188 532...... 733 340...... 620 534...... 405 343...... 194, 256, 529 536...... 608 344...... 345 537...... 650 349...... 188 539...... Use appropriate gun-crewman. 350...... 055 540...... 650 351...... 055 541...... 035 353...... 188 544...... 763 354...... 188, 345 545...... 236 355...... 055 549...... 555 357...... 316, 835 551...... 970 360...... 063, 473 553...... 958 367...... 590 554...... 555 368...... 275, 405 556...... 114 370...... 055 557...... 925 374!372 ©.©.©.©.©.©.©.©.©.©.©.©.©.©.©.©.©.©.©. 359348, 505, 581, 583, 714, 815, 558...... 574, 686, 957, 959, 961, 962 562...... 566,684,685,747,750,826,925 821,825,826,835,848 567...... 647 377...... 070 568...... 647 380...... 262 569...... 994 385...... 166 570...... 522 386...... 442 584...... 502 388...... 160 585...... (See par. lOc.) 390...... 055 587...... 576, 650 391...... 055 588...... 356 399...... 274 589...... 591 402...... 152 592...... Use appropriate gun-crewman. 403...... 261 593...... 969 404...... 749, 750 595...... 261, 641 406...... 275, 290 602 ...... Use appropriate gun-crewman. 408...... 552 603 ...... Use appropriate gun-crewman. 410...... 055,345, 359,502,931, 934 606...... 597, 601, 605, 2601, 3601 ' 412...... 114, 905 613 ...... 228, 572, 670, 671, 832 414...... 926 616...... 1736, 2736, 3736 416...... 055 618...... 619 428...... 289 621...... 619, 620 443...... 301 626...... 629 444...... 677 627...... (See par. 16b.) • 445...... 301 628...... (See par. ]6b.) 446...... 677 632 ...... 292, 786, 870 447...... 677 636...... 055. 518, 578, 601, 631, 76i - 450...... :.....©.. 060, 824 638...... 097 453...... 449 640...... 237 460...... 459 642...... 238, 641 461...... 462 643...... 238, 641 463...... 462 644...... 61.1 465...... 466 651 ...... (See par. 10.) 467...... 081 652...... (See par. 10.) 468...... 271 653...... (See par. 10.) 469...... 271 654...... Specialty obsolete, no sub- 471...... 271 slitute. 472...... 271 655...... Specialty obsolete, no sub- 474...... 271 stitiite. 475...... 271 658...... 970 476...... 477 661...... 660 488...... 522 663...... 903, 911 489...... 522 664...... 903,911 500...... 521 666...... 657 501...... 405 668...... 014, 345. 359, 529, 931 503...... 345, 667, 673, 733, 745, 761, 672...... 250 803, 812

148 AGO 2S3A 30 Jim 45 TM 12-427 C 2

SSN deleted Suggested substitutes SSN deleted SuRRested substitutes 675...... 055. 345, 590, 604, 605, 607, 865...... 859 657, 667, 729, 733, 745, 761 871...... 345. 378, 667 676...... 667 872...... 953 679...... 378, 761, 733 874...... 237 680...... 656 875...... ;.. (See par. 16b.) 682...... 686 876...... ;... (See par. 16b.) 690...... 518, 1645 877...... (See par. 16b.) 691...... 969, 970 878...... (See par. 16b.) 693...... 57R 879...... (See par. 16b.) 694...... 578 880...... (See par. 16b.) 695...... 590 881...... (See par. 16b.) 696...... 657 882...... 510 697...... 188, 590 883...... Specialty obsolete, no substi 698...... Specialty obsolete, no substi tute. tute. 884...... 866 699...... 345 885...... 866 701...... 641 886...... 850 702...... 118 887...... 854, 856 704...... 309, 650 888...... 849, 862 705...... 309, 650 889...... 854 707...... 756 891...... 851 708...... 762 892...... 852 711...... 712, 713 895...... 860 716...... 378 896...... 853 717...... 719 898...... :...... 647, 648, 955 718...... 719 900...... 183, 901 720...... 550 902...... 903, 911 721...... 667 904...... 511, 903 723...... 722 910...... 762,909 725...... 510, 724 916...... 914 726...... 055, 590 920...... '...... 918 728...... 301 928...... 014 734...... 597, 610, 733, 931, 1607 • 929...... 345,378 736...... 610, 735, 1736, 2736, 3736 930...... 014, 337, 965 741...... 650 935...... 502 742...... 578 936...... 055,405 743...... 578 937...... (See par. 16b.) 744...... 733, 761 943...... 042, 939, 940, 945 749...... 747 944...... 945 751...... 750 947...... (See par. 16b.) 752...... 750 954...... 955 753...... 722 963 ....'...... 687 755...... 756 971...... 590 758...... 687 972...... 687 764...... 542 975...... (See app. II for appropriate 767...... 776 ASTP Trainee Symbol.) 771...... Specialty obsolete, no substi 976...... (See app. II for appropriate tute. ASTP Trainee Symbol.) 774...... 514 981...... (See app. II for appropriate 779...... 784 ASTP Trainee Symbol.) 780...... 784, 787 982...... (See app. II for appropriate 781...... 590, 529 ASTP Trainee Symbol.) 783...... 578 983...... (See app. II for appropriate 785...... 710 ASTP Trainee Symbol.) 788...... 784 984...... (See app. II for appropriate 789...... 784 ASTP Trainee Symbol.) 793...... 409, 673, 861 985...... (See app. II for appropriate 794...... 522,590 ASTP Trainee Symbol.) 795...... 1736, 2736, 3736 986...... (See app. II for appropriate 800...... 804 ASTP Trainee Symbol.) 806...... 667 987...... (See app. II for appropriate 810....:...... Specialty obsolete, no substi ASTP Trainee Symbol.) tute. 988...... (See app. II for appropriate 811...... 610 ASTV Trainee Symbol.) 813...... 014, 345, 359, 931 989...... (See app. II for appropriate 816...... 502 ASTP Trainee Symbol:) 81H...... 055, 405, 502 990...... (See app. II for appropriate 823...... 118, 713 ASTP Trainee Symbol.) 827...... 182 991...... (See app. II for appropriate 828...... 184 ASTP Trainee Symbol.) 829...... 281 992...... (See app. II for appropriate 830...... 258 ASTP Trainee Symbol.) 831...... 401 998...... 502 840...... 838 1070...... 1076 857...... 409, 657, 673, 861 1345...... 345,610

AG02S3A 149 TM 12-427 30 Jim 45 C 2

SSN de!atd Sugg'-an niboUuut SSN dtletet- Suggested substitutes 1539...... 1531 4245...... 345, 873, 931 1565...... 345, 844 4531...... 873 1601...... 601 5244...... 735,845 1605...... 605,812,1607 5531...... 845 1610...... 345, 610, 733 6244...... ; 735, 864 1712...... 565,1531 6245...... 345,864,931 1733...... 733 6531...... 864 1734...... 812, 1607 8244...... 735,845,873 2244...... 735,844 8345...... 345,845,873,931 2345...... 745, 84-1. 931 8531 ...... 845,873 2531...... 844 8605...... 9745 2610...... 610,1736 8610...... 610,1736 2645...... 1645 8733...... 610,733 2867...... Specialty obsolete, no substi 8734...... 610,733 tute. 8736...... 1736 3244...... 735,864 8745...... 9745 3245...... 345,864,931 9345...... 345,844 3345...... 345,607 9513...... 844 3531...... 864 9531...... 844 4244...... 735,873

150 AGO 283A

U. S. GOVERNMENT PRINTING OF-ICE O—1947 Appendix II Army Specialized Training Codes

1. Training under the Army Specialized Training Program principles of radio. For specific information as to the is conducted in both basic and advanced phases. courses each enlisted man has pursued or completed, refer a. The basic phase curricula are designed to train enlisted ence will be made to the transcript of academic record. men for specialization in one of the advanced phase cur b. The advanced phase curricula are designed to train ricula, or for assignment to positions which require the enlisted men for specialization in the field of engineering, equivalent of college work on the freshman and sophomore languages, medicine, dentistry, veterinary medicine, and level but not the equivalent of work on the junior level or personnel psychology. A separate symbol is provided for above. The basic phase curricula consist generally of courses each type of advanced curriculum. For specific information in mathematics, physics, chemistry, English, history, or geog as to curriculum content, reference will be made to the raphy. Included in these curricula may be one or more transcript of academic record. courses in surveying and allied subjects, engineering draw ing, mechanisms and power transmission, internal com 2. The following symbols are assigned for trainees and bustion engines, principles of wire communication, and graduates of the Army Student Training Program:

Symbol Symbol Curriculum Curriculum basic Trainee Graduate basic Trainee Graduate Basic phase, general...... BMO A01 LSO A51 Engineering LTO A52 Chemical engineering...... A21 LUO A53 Civil engineering...... ECO A22 LVO A54 Sanitary engineering (Terra 7)...... ESO A23 LWO A55 Sanitary engineering (Term 8) ...... ESA A24 Polish...... LXO A56 Electrical engineering (Terras 4 and 5). . ELO Portuguese ...... LYO A57 EE power specialist (Terms 6 and 7)... EPO ' A25 LZO A58 EE communications specialist (Terms LAM A59 6 and 7)...... EUO A26 Serbo-Croat ...... LBM A60 Mechanical engineering...... EMO A27 LCM A61 Marine transportation ...... A28 LDM A62 Foreign Area and Language Studies Thai...... LEM A63 Annamese ...... '...... „. LAO ASS LFM A64 Arabic (eastern)...... LBO A36 'Language Studies Arabic (western) ...... LCO A37 LGM A70 Bengali...... LDO A38 Preprofessional and Professional Bulgarian...... LEO A39 MNO Burmese...... LFO A40 MDO ...... Chinese...... LGO A41 MVO Czech...... LHO A42 MMP A84 Dutch ...... LIO A43 Dental...... MDP A85 Finnish...... LJO A44 MVP A86 French...... ^. . LKO A45 Miscellaneous German...... LMO A46 A90 Greek...... LNO A47 Technical fields (Term 9A) ...... ZEO A91 Hindustani...... L nO A48/ Z1O A92 Hungarian...... LQO A49 HSO Italian...... LRO A50

* As distinguished from language study supplemented by area study. 3. Pending publication of TM 12-425, instructions which A. G. 0. Form No. 20 will be found in Circular No. 141 govern the recording of the above listed symbols on W. D., W. D., 11 Apr. 1944.

if 5»j248—44

.S. GOVERNMENT PRINTING OFFICE : 1945—O-63S397 165