peel tower
91Concertina wire — Concertinered razor wire Concertina wire or Dannert Wire[1] is a type of barbed wire or razor wire that is formed in large coils which can be expanded like a concertina. In conjunction with plain barbed wire and steel pickets, it is used to form… …
92Defensive fighting position — Foxhole redirects here. For the Cornish village, see Foxhole, Cornwall. Foxholes redirects here. For the North Yorkshire village, see Foxholes, North Yorkshire. U.S. Marine in a fighting hole, July 1958. A defensive fighting position (DFP) is a… …
93Cheval de frise — at the Confederate Fort Mahone defenses at Siege of Petersburg The cheval de frise (plural: chevaux de frise) was a Medieval defensive obstacle consisting of a portable frame (sometimes just a simple log) covered with many long iron or wooden… …
94Embrasure — For the area of the mouth, see Embrasure (dentistry). Inverted keyhole embrasure, allowing both arrow fire (through the arrow slit at the top) and small cannon fire through the circular opening, Château de Caen, France …
95Drawbridge — This article is about a type of bridge. For the California ghost town, see Drawbridge, California. For the broader American meaning of the term, see Moveable bridge. Drawbridge at the fort of Ponta da Bandeira; Lagos, Portugal A drawbridge is a… …
96Castra — This article is part of the series on: Military of ancient Rome (portal) 753 BC – AD 476 Structural history Roman army (unit types and ranks …
97Mamelon (fort) — For other uses, see Mamelon (disambiguation). The Council of War on the day of the taking of the Mamelon Quarries, 7 June 1855 by Roger Fenton. A mamelon (from French nipple ) is a French name for a breast shaped hillock …
98Ravelin — The ravelin outside the Land Gate at Tilbury Fort The …
99Murder-hole — Meurtrière redirects here. For the 2006 French film, see Meurtrières. Murder holes at Bodiam Castle A murder hole or meurtrière is a hole in the ceiling of a gateway or passageway in a fortification through which the defenders could fire, throw… …
100Jersey barrier — 42 inch (110 cm) high version of the Jersey barrier for deflecting automobiles and semi trailer trucks. A Jersey barrier or Jersey wall is a modular concrete barrier employed to separate lanes of traffic. It is designed to both minimize… …
