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An ancient casemate wall at Masada. The term casemate wall is used in the archaeology of Israel and the wider Near East, having the meaning of a double wall protecting a city [5] or fortress, [6] with transverse walls separating the space between the walls into chambers. [5]
Weapons Storage and Security System (WS3) is a system including electronic controls and vaults built into the floors of Protective Aircraft Shelters (PAS) on several NATO military airfields all over the world. These vaults are used for safe special weapons storage, typically of tactical B61 nuclear bombs.
The mount includes elements of the machine gun cooling system. A swing mount is a fixed mount that allows a far greater and more flexible arc of fire than the simple pintle mount system. Utilising a system of one or two articulated arms the gunner can swing the weapon through a wide arc even though the gunner's position is fixed relative to the ...
An illustration of Devonshire Redoubt, Bermuda, 1614. A redoubt (historically redout) [1] [2] is a fort or fort system usually consisting of an enclosed defensive emplacement outside a larger fort, usually relying on earthworks, although some are constructed of stone or brick. [3]
After that plans were finalized for building underground hangars capable of surviving close hits by tactical nuclear weapons. This required that these new hangars be much deeper, with 25 to 30 meters of rock cover, and heavy-duty blast doors in concrete. [11] The Saab 37 Viggen aircraft was designed with a folding tail fin to fit into low hangars.
British 64 pounder rifled muzzle-loading (RML) gun on a Moncrieff disappearing mount, at Scaur Hill Fort, Bermuda The BL 8 inch disappearing gun of the South Battery, at North Head in Devonport, New Zealand A U.S. Coast Artillery battery with two guns on disappearing carriages Annotated photograph of an M1901 Buffington–Crozier disappearing carriage for an M1900 12-inch gun Inside a ...
Phalanx automated turret, mounted on USS Denver. A sentry gun is a weapon that automatically aims and fires at targets that are detected by sensors. The earliest functioning military sentry guns were the close-in weapon systems point-defense weapons, such as the Phalanx CIWS, used for detecting and destroying short range incoming missiles and enemy aircraft, first used exclusively on naval ...
The wall gun or wall piece was a type of smoothbore firearm used in the 16th through 19th centuries by defending forces to break the advance of enemy troops. Essentially, it was a scaled-up version of the army's standard infantry musket , operating under the same principles, but with a bore of up to one-inch (25.4 mm) calibre .