Breastwork
101Patrol boat — This article is about the naval vessel. For the Australian TV series, see Patrol Boat (TV series). Canadian Forces Kingston class Patrol boat …
102Walls of Constantinople — Istanbul, Turkey Map showing Constantinople and its walls du …
103Destroyer escort — A destroyer escort (DE) is the classification for a smaller, lightly armed warship designed to be used to escort convoys of merchant marine ships, primarily of the United States Merchant Marine in World War II. It is employed primarily for anti… …
104Midget submarine — Some 80 Japanese Type D ( Koryu ) Midget Submarines in a drydock at Kure, October 19, 1945 …
105Dock landing ship — USS Harpers Ferry, a US Navy Harper s Ferry class dock landing ship. A Dock landing ship or Landing ship (Dock) (hull classification LSD) is a form of amphibious warship designed to support amphibious operations. These amphibious assault ships… …
106Drawbridge — 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… …
107Castra — 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 …
108Mamelon (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 …
109Ravelin — The ravelin outside the Land Gate at Tilbury Fort The …
110Concentric castle — Krak des Chevaliers: a concentric castle …
