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A Selective Glossary of Nineteenth Century Fortification Terms 77 Last A Selective Glossary of Nineteenth Century Fortification Terms 77 A Selective Glossary of Nineteenth Century Fortification Terms Joseph H. Last This glossary is provided to assist readers who might be unfamiliar with nineteenth century military terms. Engineers developed a specialized vocabulary over a period of four centuries to describe elements of defen- sive works. Armed with a common language, military engineers could effectively convey their ideas regard- ing modifications and improvements in fort design. Consisting of Italian, French, and English expressions, the terminology illustrates the lineage of fortification theory, highlights the preoccupation with defence-in- depth, and identifies the primary countries that made the business of nineteenth century fortifications both an art and a science. Introduction Selective Glossary Nineteenth century fortifications were the prod- Advanced Works: Additional works beyond the uct of a four-hundred-year process pitting glacis, but near enough to receive protection advancements in ordnance against improvements from the main fortifications. They are designed in fort design and materials (Arnold 2002). to force an enemy to begin a siege from a great Evolving from the fortified keep into subter- distance, and to cover parts of the ground not ranean works of reinforced concrete, forts were easily seen from the main parapets (Hughes the offspring of art and science. By the 1991:241; Saunders 1989:246). Renaissance, the business of fortification design Armourer: A maker and repairer of arms or required much more than the influence of mon- armour (Barber 2004:71). archs and lords. It demanded specialized theo- Banquette: A raised ledge, sometimes stepped, at rists, engineers, and a technical vocabulary. the base of the parapet of the rampart on which Knowledge of fortifications and elements of troops stand when firing upon attacking forces defence was once an essential facet of a gentle- (also known as the firing step) (Hogg 1977:155; man’s education (Herman 1992:7). Today, our Herman 1992:175). reliance on missiles and flight technology has all Barbette: Raised platform allowing mounted but erased the need for permanent fortifications. guns to fire over the parapet en barbette (without Gone too is the pedestrian knowledge of forts the need for embrasures) (Farwell 2001:79). A and their defensive components. breastwork of a battery that is sufficiently low to This selective glossary is thus intended to assist permit fire without the use of embrasures twenty-first century readers unfamiliar with (Saunders 1989:246). nineteenth century fortification terms. The defi- Bastion: Projection from the general outline of a nitions employed are a collective amalgamation fortress from which the garrison can defend the gleaned from several sources on the subject ground before the ramparts by flanking fire. From (Duffy 1975:183-186; Herman 1992:175-185; the mid-sixteenth century on, a bastion refers to a Hogg 1977:155-158; Hughes 1991:241-248; four-sided projection consisting of two faces and Saunders 1989:246-249). Derived from Italian, two flanks (Duffy 1975:183; Saunders 1989:246). French, and the English language, the vocabulary Barracks: A purpose-built structure providing per- reflects contemporary spheres of influence and manent or semi-permanent accommodation for underscores the geographical/political arenas soldiers. Barracks can be free-standing or incorpo- where “model” fortifications were conceived, rated into casemated ramparts (Douet 1998:1; developed, and nurtured. Farwell 2001:81). 78 Ontario Archaeology No. 76, 2003 Battery: Any place, permanent or temporary, salient angle toward the country. A demi-lune is where guns or mortars are mounted. The sometimes referred to as a ravelin (Herman emplacement usually consists or a parapet and 1992:179; Saunders 1989:246). defensive ditch (Duffy 1975:183; Saunders Ditch: A wide, deep trench surrounding a defen- 1989:246). sive work, either wet or dry. Often excavated to Blast Wall: A free-standing masonry wall designed provide building material for the ramparts and to to reflect the blast from an explosion. Blast walls present a serious obstacle to an attacker (Hughes are often associated with powder magazines. 1991:243). Blockhouse: A small fortified work constructed Embrasure: An opening cut through a parapet of heavy timber or masonry and consisting of or wall through which cannon or other guns one or more rooms fitted with loopholes to per- could be fired. The sides or cheeks of the embra- mit defensive fire in various directions. Normally sure are flared outward to protect defenders while a small, detached work situated to guard an iso- offering a broader sweep or range of fire (Hogg lated point against raids (Saunders 1989:246). 1977:156; Hughes 1991:243). Breastwork: Similar to a parapet but also thrown En Barbette: A gun or battery is said to be en up along entrenchments to provide shelter and barbette when it is placed so as to fire over a low protection to defending troops (Hogg 1977:155) parapet without embrasure (Duffy 1975:183; Caponnière: A casemated work projecting per- Hogg 1977:155). pendicularly across a ditch for the purpose of Enceinte: The main body or area of a fort as delivering flanking or enfilade fire. Also covered defined by the outline of the ramparts excluding passage constructed across a ditch, sometimes outworks (Herman 1992:179; Hughes 1991:243). with loopholes for muskets or rifles, intended to Enfilade Fire: Fire directed along the length of a provide sheltered communication with the out- fortification or a body of troops (also known as works (Hughes 1991:241; Saunders 1989:246). flanking fire) (Herman 1992:179). Canteen: A shop selling necessities or liquor in Face (of a bastion): The exposed, outer wall of barracks or camp (Barber 2004:224; Farwell the bastion forming the salient angle projecting 2001:161). towards “the country” (Hogg 1977:156). Casemates: A bombproof vaulted chamber built Flank (of a bastion): The portion of the bastion in the thickness of the ramparts to permit artillery lying between its face and adjoining curtain wall fire, or to provide storage or barrack accommoda- (Hughes 1991:244). tion (Hogg 1977:155; Hughes 1991:241). Glacis: A natural or person-made slope descend- Coupe de main: A sudden vigorous attack ing from the crest of the ditch towards “the coun- (Barber 2004:347). try,” the purpose of which was to expose the Counterscarp: The outer face or slope of the attacker and to provide defenders with a clear ditch below the glacis. The side of the ditch clos- fire. Since much labour went into the contouring est to “the country” and the besieging force of the glacis, they are normally found only (Hogg 1977:156; Saunders 1989:246). around permanent fortifications (Herman Curtain Wall: The main wall or rampart of a 1992:179). defensive work, lying between two bastions, tow- Gorge: The neck, or rear face (either open or ers, or gates (Herman 1992:179). closed) of a bastion or other work (Herman Demi-Bastion: A work with one face and one 1992:179; Saunders 1989:249). flank. Half the entrance to a bastion measured Guardhouse: A building used to accommodate a from the angle of its adjoining curtain. A work military guard or to detain prisoners (Barber resembling one half of a bastion (Hughes 2004:670). 1991:243). Keep: A stronghold within a fort and the final Demi-lune: A detached work constructed to point of defence. A keep often refers to the main cover the curtain and the shoulders of the bas- castle tower (Hogg 1977:157; Saunders tion. It was composed of two faces forming a 1989:247). Last A Selective Glossary of Nineteenth Century Fortification Terms 79 Loophole: A long, narrow opening in a parapet Redoubt: A closed, independent work of square or wall to provide for vision and allow small arm or polygonal trace, without bastions. Usually, a fire (Farwell 2001:504). redoubt had little or no means of flanking Martello Tower: A British coastal tower, conical in defence. Redoubts commonly form a chain of shape, mounting guns on its terreplein and bar- detached works designed to support each other racks for the gun crew. Its design was inspired by a (Hogg 1977:158; Hughes 1991:247). Corsican work that withstood a naval encounter Reverse Fire Chamber: A work (casemate or and a two-day investment of 1400 men before its passage) constructed behind the counterscarp 32-man garrison surrendered (Clements 1999:10- from which the ditch could be enfiladed with 16; Hughes 1991:246; Grimsley 1998:13-15). reverse fire (Herman 1992:178). A reverse fire Moat: Common usage for a ditch. A deep, defen- chamber is also called a Counterscarp Gallery. sive trench enveloping the work (Hogg 1977:157). Ricochet Fire: The method of firing by which Palisade: A series of wooden posts, close-set and the projectile is made to glance or bounce along pointed, driven into the earth and used as an the length of a work (Saunders 1989:249). obstacle or barricade about a defensive position. Rifling: Technique of cutting spiral grooves into Palisades are normally positioned within a defen- the bore of the barrel of artillery and firearms, sive ditch to delay assault and act as an antiper- resulting in greater accuracy and distance of the sonnel device (Hughes 1991:247). projectile (Farwell 2001:698). Parade: The ground on which regular musters Salient: An angle pointing outwards toward the and exercises are held (Saunders 1989:249). field or country, such as the apex of a bastion Parapet: A stout wall or earthen breastwork, (Saunders 1989:249). crowning the rampart, providing shelter and pro- Scarp: The slope or face of the rampart from tection to defending troops (Hogg 1977:156; below the parapet to the bottom of the ditch. Saunders 1989:249).
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