Illustrated glossary
- Arsenal
- Barracks
- Bastion
- Bastioned tower
- Battery
- Capital
- Caponier
- Casemate
- Cavalier
- Citadel
- Cofferdam
- Cordon
- Corps de garde or Guardroom
- Corps de place
- Counterguard or coverface
- Counterscarp
- Covert way
- Crown
- Cunette
- Curtain wall
- Dame
- Defilade or to cover
- Demi-lune or ravelin
- Ditch
- Echauguette or watchtower
- Embrasure
- Enceinte or urban walls
- Entrenched camps
- Face
- Fausse braie
- First system
- Flank
- Fort
- Fortress
- Glacis
- Gorge
- Guérite
- Hornwork
- Loophole or Murder hole
- Lunette
- Nid-de-pie
- Orgues
- Orillion
- Parade ground
- Parapet
- Pas de souris stairway
- Portcullis
- Postern
- Rampart
- Redoubt
- Reduit
- Second system
- Stronghold
- Tenaille
- Third system
- Three systems
- To flank
- Traverse
- Wall walk
Postern
Small open gate concealed in the least exposed or apparent places, especially in the ditches. The postern was generally closed during peace time.
Postern or sally-port:Small open gate concealed in the least exposed or apparent places, especially in the ditches.
