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Georgetown University in Partial Fulfillment of the Requirements for the Degree of Master of Arts in Security Studies
THE BATTLE FOR INTELLIGENCE: HOW A NEW UNDERSTANDING OF INTELLIGENCE ILLUMINATES VICTORY AND DEFEAT IN WORLD WAR II A Thesis submitted to the Faculty of the Graduate School of Arts and Sciences of Georgetown University in partial fulfillment of the requirements for the degree of Master of Arts in Security Studies By Edward J. Piotrowicz III, B.A. Washington, DC April 15, 2011 Copyright 2011 by Edward J. Piotrowicz III All Rights Reserved ii THE BATTLE FOR INTELLIGENCE: HOW A NEW UNDERSTANDING OF INTELLIGENCE ILLUMINATES VICTORY AND DEFEAT IN WORLD WAR II Edward J. Piotrowicz III, B.A. Thesis Advisor: Jennifer E. Sims, PhD. ABSTRACT Does intelligence make a difference in war? Two World War II battles provide testing grounds for answering this question. Allied intelligence predicted enemy attacks at both Midway and Crete with uncanny accuracy, but the first battle ended in an Allied victory, while the second finished with crushing defeat. A new theory of intelligence called “Decision Advantage,”a illuminates how the success of intelligence helped facilitate victory at Midway and how its dysfunction contributed to the defeat at Crete. This view stands in contrast to that of some military and intelligence scholars who argue that intelligence has little impact on battle. This paper uses the battles of Midway and Crete to test the power of Sims‟s theory of intelligence. By the theory‟s standards, intelligence in the case of victory outperformed intelligence in the case of defeat, suggesting these cases uphold the explanatory power of the theory. Further research, however, could enhance the theory‟s prescriptive power. -
Polish Mathematicians Finding Patterns in Enigma Messages
Fall 2006 Chris Christensen MAT/CSC 483 Machine Ciphers Polyalphabetic ciphers are good ways to destroy the usefulness of frequency analysis. Implementation can be a problem, however. The key to a polyalphabetic cipher specifies the order of the ciphers that will be used during encryption. Ideally there would be as many ciphers as there are letters in the plaintext message and the ordering of the ciphers would be random – an one-time pad. More commonly, some rotation among a small number of ciphers is prescribed. But, rotating among a small number of ciphers leads to a period, which a cryptanalyst can exploit. Rotating among a “large” number of ciphers might work, but that is hard to do by hand – there is a high probability of encryption errors. Maybe, a machine. During World War II, all the Allied and Axis countries used machine ciphers. The United States had SIGABA, Britain had TypeX, Japan had “Purple,” and Germany (and Italy) had Enigma. SIGABA http://en.wikipedia.org/wiki/SIGABA 1 A TypeX machine at Bletchley Park. 2 From the 1920s until the 1970s, cryptology was dominated by machine ciphers. What the machine ciphers typically did was provide a mechanical way to rotate among a large number of ciphers. The rotation was not random, but the large number of ciphers that were available could prevent depth from occurring within messages and (if the machines were used properly) among messages. We will examine Enigma, which was broken by Polish mathematicians in the 1930s and by the British during World War II. The Japanese Purple machine, which was used to transmit diplomatic messages, was broken by William Friedman’s cryptanalysts. -
The First Americans the 1941 US Codebreaking Mission to Bletchley Park
United States Cryptologic History The First Americans The 1941 US Codebreaking Mission to Bletchley Park Special series | Volume 12 | 2016 Center for Cryptologic History David J. Sherman is Associate Director for Policy and Records at the National Security Agency. A graduate of Duke University, he holds a doctorate in Slavic Studies from Cornell University, where he taught for three years. He also is a graduate of the CAPSTONE General/Flag Officer Course at the National Defense University, the Intelligence Community Senior Leadership Program, and the Alexander S. Pushkin Institute of the Russian Language in Moscow. He has served as Associate Dean for Academic Programs at the National War College and while there taught courses on strategy, inter- national relations, and intelligence. Among his other government assignments include ones as NSA’s representative to the Office of the Secretary of Defense, as Director for Intelligence Programs at the National Security Council, and on the staff of the National Economic Council. This publication presents a historical perspective for informational and educational purposes, is the result of independent research, and does not necessarily reflect a position of NSA/CSS or any other US government entity. This publication is distributed free by the National Security Agency. If you would like additional copies, please email [email protected] or write to: Center for Cryptologic History National Security Agency 9800 Savage Road, Suite 6886 Fort George G. Meade, MD 20755 Cover: (Top) Navy Department building, with Washington Monument in center distance, 1918 or 1919; (bottom) Bletchley Park mansion, headquarters of UK codebreaking, 1939 UNITED STATES CRYPTOLOGIC HISTORY The First Americans The 1941 US Codebreaking Mission to Bletchley Park David Sherman National Security Agency Center for Cryptologic History 2016 Second Printing Contents Foreword ................................................................................ -
Code Breaking at Bletchley Park
Middle School Scholars’ CONTENTS Newsletter A Short History of Bletchley Park by Alex Lent Term 2020 Mapplebeck… p2-3 Alan Turing: A Profile by Sam Ramsey… Code Breaking at p4-6 Bletchley Park’s Role in World War II by Bletchley Park Harry Martin… p6-8 Review: Bletchley Park Museum by Joseph Conway… p9-10 The Women of Bletchley Park by Sammy Jarvis… p10-12 Bill Tutte: The Unsung Codebreaker by Archie Leishman… p12-14 A Very Short Introduction to Bletchley Park by Sam Corbett… p15-16 The Impact of Bletchley Park on Today’s World by Toby Pinnington… p17-18 Introduction A Beginner’s Guide to the Bombe by Luca “A gifted and distinguished boy, whose future Zurek… p19-21 career we shall watch with much interest.” This was the parting remark of Alan Turing’s Headmaster in his last school report. Little The German Equivalent of Bletchley could he have known what Turing would go on Park by Rupert Matthews… 21-22 to achieve alongside the other talented codebreakers of World War II at Bletchley Park. Covering Up Bletchley Park: Operation Our trip with the third year academic scholars Boniface by Philip Kimber… p23-25 this term explored the central role this site near Milton Keynes played in winning a war. 1 intercept stations. During the war, Bletchley A Short History of Bletchley Park Park had many cover names, which included by Alex Mapplebeck “B.P.”, “Station X” and the “Government Communications Headquarters”. The first mention of Bletchley Park in records is in the Domesday Book, where it is part of the Manor of Eaton. -
World War II at Sea This Page Intentionally Left Blank World War II at Sea
World War II at Sea This page intentionally left blank World War II at Sea AN ENCYCLOPEDIA Volume I: A–K Dr. Spencer C. Tucker Editor Dr. Paul G. Pierpaoli Jr. Associate Editor Dr. Eric W. Osborne Assistant Editor Vincent P. O’Hara Assistant Editor Copyright 2012 by ABC-CLIO, LLC All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, except for the inclusion of brief quotations in a review, without prior permission in writing from the publisher. Library of Congress Cataloging-in-Publication Data World War II at sea : an encyclopedia / Spencer C. Tucker. p. cm. Includes bibliographical references and index. ISBN 978-1-59884-457-3 (hardcopy : alk. paper) — ISBN 978-1-59884-458-0 (ebook) 1. World War, 1939–1945—Naval operations— Encyclopedias. I. Tucker, Spencer, 1937– II. Title: World War Two at sea. D770.W66 2011 940.54'503—dc23 2011042142 ISBN: 978-1-59884-457-3 EISBN: 978-1-59884-458-0 15 14 13 12 11 1 2 3 4 5 This book is also available on the World Wide Web as an eBook. Visit www.abc-clio.com for details. ABC-CLIO, LLC 130 Cremona Drive, P.O. Box 1911 Santa Barbara, California 93116-1911 This book is printed on acid-free paper Manufactured in the United States of America To Malcolm “Kip” Muir Jr., scholar, gifted teacher, and friend. This page intentionally left blank Contents About the Editor ix Editorial Advisory Board xi List of Entries xiii Preface xxiii Overview xxv Entries A–Z 1 Chronology of Principal Events of World War II at Sea 823 Glossary of World War II Naval Terms 831 Bibliography 839 List of Editors and Contributors 865 Categorical Index 877 Index 889 vii This page intentionally left blank About the Editor Spencer C. -
Entrance and Exit SUGGESTED ROUTE
The National Museum of Computing 5min walk from Visitor Centre SUGGESTED ROUTE North More parking 0min 1min 2min 2min drive from Visitor Centre Block C Visitor Centre and introduction to Bletchley Park 0m 50m 100m Chauffeurs’ Hut Meeting point for 1 hour outdoor free walking tours Sentry Box Garages Mansion Original Victorian mansion with Commander Denniston’s Office and the Library recreated as they were in World War Two, plus Veterans’ Stableyard Stories exhibition Garages Wartime vehicles and how top secret intelligence material was transported Picnic & Hut 4 Mansion Stableyard The buildings where the first breaks into the daily Children’s Hut 11A Play Area changing German Enigma were made Polish Hut 12 Memorial Huts 11A & 11 How the team during WW2 helped solve the challenge of Enigma with the creation of the Bombe machines Hut 11 and what it was like to operate them Gatehouse Tennis Court Huts 3 & 6 Restored German army and airforce codebreaking huts Hut 1 Hut 8 German naval Enigma codebreaking hut with Hut 3 Alan Turing’s WW2 office recreated Picnic Area Hut 6 Teleprinter Building D-Day: Interception, Intelligence, Invasion Chauffeurs’ Hut Hut 8 An immersive exhibition explaining Bletchley Park’s secret D-Day role Codebreakers’ Teleprinter Building Wall Block B Museum Different cipher machines, including Enigma and codes of WW2 National Radio Radio communication from inception to present Centre day and its place in the future Lake Picnic Area TEMPORARY EXHIBITIONS Visitor Centre The Road to Bletchley Park Block C Explores codebreaking in World War One Gravel path Secrecy and Security: Keeping Safe Online Cybersecurity and how to safely navigate cyberspace Block B Bletchley Park Mansion Bill Tutte: Mathematician + Codebreaker Memorial An insight into the life and work of this elite Codebreaker National Radio Centre Hut 12 Temporary exhibition space. -
Gendering Decryption - Decrypting Gender
1 Gendering decryption - decrypting gender The gender discourse of labour at Bletchley Park 1939-1945 Photograph taken from Smith 2011. Spring 2013 MA thesis (30 hp) Author: Annie Burman Supervisor: Mikael Byström Seminar leader: Torkel Jansson Date of seminar: 4 June 2013 2 Abstract Ever since the British efforts to break Axis codes and ciphers during the Second World War were declassified in the 1970s, the subject of Government Code and Cipher School, the organisation responsible, Bletchley Park, its wartime headquarters, and the impact of the intelligence on the war has fascinated both historians and the general public. However, little attention has been paid to Bletchley Park as a war station where three-quarters of the personnel was female. The purpose of this thesis is to explore the gender discourse of labour at Bletchley Park and how it relates to the wider context of wartime Britain. This is done through the theoretical concepts of gendering (the assignation of a gender to a job, task or object), horizontal gender segregation (the custom of assigning men and women different jobs) and vertical gender segregation (the state where men hold more prestigious positions in the hierarchy than women). The primary sources are interviews, letters and memoirs by female veterans of Bletchley Park, kept in Bletchley Park Trust Archive and the Imperial War Museum’s collections, and printed accounts, in total two monographs and five articles. Surviving official documents from Bletchley Park, now kept in the National Archives, are also utilised. Using accounts created by female veterans themselves as the main source material allows for women’s perspectives to be acknowledged and examined. -
A Complete Bibliography of Publications in Cryptologia
A Complete Bibliography of Publications in Cryptologia Nelson H. F. Beebe University of Utah Department of Mathematics, 110 LCB 155 S 1400 E RM 233 Salt Lake City, UT 84112-0090 USA Tel: +1 801 581 5254 FAX: +1 801 581 4148 E-mail: [email protected], [email protected], [email protected] (Internet) WWW URL: http://www.math.utah.edu/~beebe/ 04 September 2021 Version 3.64 Title word cross-reference 10016-8810 [?, ?]. 1221 [?]. 125 [?]. 15.00/$23.60.0 [?]. 15th [?, ?]. 16th [?]. 17-18 [?]. 18 [?]. 180-4 [?]. 1812 [?]. 18th (t; m)[?]. (t; n)[?, ?]. $10.00 [?]. $12.00 [?, ?, ?, ?, ?]. 18th-Century [?]. 1930s [?]. [?]. 128 [?]. $139.99 [?]. $15.00 [?]. $16.95 1939 [?]. 1940 [?, ?]. 1940s [?]. 1941 [?]. [?]. $16.96 [?]. $18.95 [?]. $24.00 [?]. 1942 [?]. 1943 [?]. 1945 [?, ?, ?, ?, ?]. $24.00/$34 [?]. $24.95 [?, ?]. $26.95 [?]. 1946 [?, ?]. 1950s [?]. 1970s [?]. 1980s [?]. $29.95 [?]. $30.95 [?]. $39 [?]. $43.39 [?]. 1989 [?]. 19th [?, ?]. $45.00 [?]. $5.95 [?]. $54.00 [?]. $54.95 [?]. $54.99 [?]. $6.50 [?]. $6.95 [?]. $69.00 2 [?, ?]. 200/220 [?]. 2000 [?]. 2004 [?, ?]. [?]. $69.95 [?]. $75.00 [?]. $89.95 [?]. th 2008 [?]. 2009 [?]. 2011 [?]. 2013 [?, ?]. [?]. A [?]. A3 [?, ?]. χ [?]. H [?]. k [?, ?]. M 2014 [?]. 2017 [?]. 2019 [?]. 20755-6886 [?, ?]. M 3 [?]. n [?, ?, ?]. [?]. 209 [?, ?, ?, ?, ?, ?]. 20th [?]. 21 [?]. 22 [?]. 220 [?]. 24-Hour [?, ?, ?]. 25 [?, ?]. -Bit [?]. -out-of- [?, ?]. -tests [?]. 25.00/$39.30 [?]. 25.00/839.30 [?]. 25A1 [?]. 25B [?]. 26 [?, ?]. 28147 [?]. 28147-89 000 [?]. 01Q [?, ?]. [?]. 285 [?]. 294 [?]. 2in [?, ?]. 2nd [?, ?, ?, ?]. 1 [?, ?, ?, ?]. 1-4398-1763-4 [?]. 1/2in [?, ?]. 10 [?]. 100 [?]. 10011-4211 [?]. 3 [?, ?, ?, ?]. 3/4in [?, ?]. 30 [?]. 310 1 2 [?, ?, ?, ?, ?, ?, ?]. 312 [?]. 325 [?]. 3336 [?, ?, ?, ?, ?, ?]. affine [?]. [?]. 35 [?]. 36 [?]. 3rd [?]. Afluisterstation [?, ?]. After [?]. Aftermath [?]. Again [?, ?]. Against 4 [?]. 40 [?]. 44 [?]. 45 [?]. 45th [?]. 47 [?]. [?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?]. Age 4in [?, ?]. [?, ?]. Agencies [?]. Agency [?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?]. -
Jack Copeland on Enigma
Enigma Jack Copeland 1. Turing Joins the Government Code and Cypher School 217 2. The Enigma Machine 220 3. The Polish Contribution, 1932–1940 231 4. The Polish Bomba 235 5. The Bombe and the Spider 246 6. Naval Enigma 257 7. Turing Leaves Enigma 262 1. Turing Joins the Government Code and Cypher School Turing’s personal battle with the Enigma machine began some months before the outbreak of the Second World War.1 At this time there was no more than a handful of people in Britain tackling the problem of Enigma. Turing worked largely in isolation, paying occasional visits to the London oYce of the Government Code and Cypher School (GC & CS) for discussions with Dillwyn Knox.2 In 1937, during the Spanish Civil War, Knox had broken the type of Enigma machine used by the Italian Navy.3 However, the more complicated form of Enigma used by the German military, containing the Steckerbrett or plug-board, was not so easily defeated. On 4 September 1939, the day following Chamberlain’s announcement of war with Germany, Turing took up residence at the new headquarters of the Govern- ment Code and Cypher School, Bletchley Park.4 GC & CS was a tiny organization 1 Letters from Peter Twinn to Copeland (28 Jan. 2001, 21 Feb. 2001). Twinn himself joined the attack on Enigma in February 1939. Turing was placed on Denniston’s ‘emergency list’ (see below) in March 1939, according to ‘StaV and Establishment of G.C.C.S.’ (undated), held in the Public Record OYce: National Archives (PRO), Kew, Richmond, Surrey (document reference HW 3/82). -
Bletchley Park Personnel Master List R
R – Start Ed: 0809 Surname Forenames Married Grade or Rank Section / Location Source When at BP or Initials Name As described in official records See Notes Rabagliati Catherine Glenda?? 7, Rabagliatti Glenda Young Miss Block A? Hut 10; 7, 16, Race Charles Mr T S.A.O, Hut 3, 6 I. S., Hut 4 In Hut 3, in Hut 6, and possibly in N.S. 4, 11, 12, Race H. Mr. 10, Race-Stubbs Edna Rowbottom 14, Radcliffe Joyce 7, Radcliffe Muriel B Christie WRNS 7, 11, Radford C.A.R. Mr. Rm 7 1940. 2, Radford, Miss J. M. Joyce? Miss T. A. Hut 9, Hut 1 4, 7, Radford, L/AC ? L/AC RAF Air Sect., Hut 1 3A Rae, Miss J. D. Miss T.J.A.O. Block D(6). 4, Rae Mary Miss 7, 15, Raftery? Bernard Mr Eastcote Bombe-maintenance? 7,16, Raiders J. Mrs 16, Raimes, Mrs H.P. Mrs. T.A. Hut 14 (CSR) (Signals Office), 4, Communications H.Q. Raimes S. F/O Possibly S. Raines below? 10, Raines, Miss G. J. ‘Gwendy’ T. A. Hut 14 (M.R.) Block E.(Signals Office), 4, 7, 16, Communications H.Q. Raines I. Miss 10, Raines Stanley 7, Rainsford Florence Cawl Wren 7, Ralph Vivienne Mrs 16, Ramsay, Mrs A. Mrs. T.J.A.O. Block A(N). 4, 11, Ramsay B. 7, 9, Ramsay, Mrs. Elizabeth Helen Née: Anderson Mrs T. S.A.O. Mauritius, Italian, B. S. Hut 5, Hut 10, Air Sec, Met sub-sec. In Dip & 4, 12 Rm 9 (Meteorological Sec). -
Unmasking Gchq: the Abc Trial 341
UNMASKING GCHQ: THE ABC TRIAL 341 18 too large for any human to read. Moreover, the vast complexes of domes and satellite dishes that now accompanied the suppos- Unmasking GCHQ: The ABC Trial edly super-secret intelligence activities of NSAand GCHQmeant that they were more and more visible. Sooner rather than later, an enterprising investigative journalist was bound to point to these surreal installations and shout the dreaded words 'Signals We've been to MI5, MI6, Scotland Yard, Parliament and many intelligence.' It is amazing that in the mid-1970s GCHQ was more. Now we're going where much of the dirty work goes on - still managing to pass itself off as a glorified communications CHELTENHAM! relay station, hiding its real activities from public view. ABC trial campaign newsletter, 27 May 19781 Anonymity would not last much longer. What we now recognise as the first glimmerings of a global telecommunications revolution seemed 10 be in the interests of the world's major sigint agencies. A fascinating example of this During the late 1960s and early 1970s, signals intelligence was was an operation carried out jointly by the British and Americans changing fast. The big players were discovering a whole new in 1969. NSA was gathering a great deal of intelligence from world of super-secret interception which provided a different telephone callsbetween Fidel Castro's Cuba and the many Cuban sort of signals intelligence. This new source was telephone calls. exiles living in Florida. Using sigint ships, it was also possible As we have already seen, tapping telephones was hardly new, 10 intercept some calls from Havana to other parts of Cuba. -
Needles and Haystacks: the Search for Ultra in the 1930'S
Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection 1983-03 Needles and haystacks: the search for Ultra in the 1930's Gouaze, Linda Yolande Monterey, California. Naval Postgraduate School http://hdl.handle.net/10945/19918 DUDLEY KNOX NAV i 9 NAVAL POSTGRADUATE SCHOOL Monterey, California THESIS NEEDLS AND HAYSTACKS: THE SEARCH FOR ULTRA IN THE 1 930 * s by Linda Yolande Gouaze' March 1983 Thesis Advisor: S . J u r i k a Approved for public release; distribution unlimited Ui^ft UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PACE (When Dmlm Znlored) READ INSTRUCTIONS REPORT DOCUMENTATION PAGE BEFORE COMPLETING FORM 1. REPORT NUMBER 2. GOVT ACCESSION NO. 3. RECIPIENT'S CATALOG NUMBER 4. TITLE (mnd Subtitle) 5. TYPE OF REPORT & PERIOD COVERED Master's Thesis; Needles and Haystacks: The Search March 1983 1930' for Ultra in the s 6. PERFORMING ORG. REPORT NUMBER 7. AUTHORS 8. CONTRACT OR GRANT NUMBERf*) Linda Yolande Gouaze 1. RERFORMINO ORGANIZATION NAME AND AOORESS 10. PROGRAM ELEMENT. PROJECT, TASK AREA & WORK UNIT NUMBERS Naval Postgraduate School Monterey, California 93943 II. CONTROLLING OFFICE NAME AND AOORESS 12. REPORT DATE March 1983 Naval Postgraduate School Monterey, California 93943 O. NUMBER OF PAGES 84 14. MONITORING AGENCY NAME * AOORESSf" dllterent /ram Controlling Olllce) 15. SECURITY CLASS, (ol thle report) UNCLASSIFIED IS*. DECLASSIFICATION/ DOWNGRADING SCHEDULE IS. DISTRIBUTION STATEMENT (ol thle Report) Approved for public release; distribution unlimited 17. DISTRIBUTION STATEMENT (ol In* ebetrmct entered In Block 20, It different from Report) It. SURRLEMENTARY NOTES Enigma British Intelligence code-breaking World War II Polish Intelligence intelligence French Intelligence cryptology 20.