Introduction A redoubt (historically redout) 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. It is meant to protect soldiers outside the main defensive line and can be a permanent structure or a hastily constructed… Read More
Introduction Tunnel warfare involves war being conducted in tunnels and other underground cavities. It often includes the construction of underground facilities in order to attack or defend, and the use of existing natural caves and artificial underground facilities for military purposes. Tunnels can be used to undermine fortifications and slip into enemy territory for a… Read More
Introduction Ostrog (Russian: острог, IPA: [ɐˈstrok]) is a Russian term for a small fort, typically wooden and often non-permanently staffed. Ostrogs were encircled by 4-6 metres high palisade walls made from sharpened trunks. The name derives from the Russian word строгать (strogat’), “to shave the wood”. Ostrogs were smaller and exclusively military forts, compared to… Read More
Introduction A battery tower was a defensive tower built into the outermost defences of many castles, usually in the 16th century or later, after the advent of firearms. Its name is derived from the word battery, a group of several cannon. Outline These, usually round, towers could house numerous cannon oriented in various directions and… Read More
Introduction A pillbox is a type of blockhouse, or concrete dug-in guard-post, often camouflaged, normally equipped with loopholes through which defenders can fire weapons. It is in effect a trench firing step, hardened to protect against small-arms fire and grenades, and raised to improve the field of fire. The modern concrete pillbox originated on the… Read More
Introduction A blockhouse is a small fortification, usually consisting of one or more rooms with loopholes, allowing its defenders to fire in various directions. It is usually an isolated fort in the form of a single building, serving as a defensive strong point against any enemy that does not possess siege equipment or, in modern… Read More
Introduction A murder hole or meurtrière is a hole in the ceiling of a gateway or passageway in a fortification through which the defenders could shoot, throw or pour harmful substances or objects such as rocks, arrows, scalding water, hot sand, quicklime, or boiling oil, down on attackers. Boiling oil was rarely used because of… Read More
Boot Camp & Military Fitness Institute 