barbed tape or razor wire is a mesh of metal strips with sharp edges whose purpose is to prevent passage by humans. the term 'razor wire', through long usage, has generally been used to describe barbed tape products. razor wire is much sharper than the standard barbed wire; it is named after its appearance but is not razor sharp. the points are .
dragon's teeth german: drachenzähne are square-pyramidal fortifications of reinforced concrete first used during the second world war to impede the movement of tanks and mechanised infantry.the idea was to slow down and channel tanks into killing zones where they could easily be disposed of by anti-tank weapons.. they were employed extensively, particularly on the siegfried line.
a fortification is a military construction or building designed for the defense of territories in warfare, and is also used to solidify rule in a region during peacetime.the term is derived from the latin fortis 'strong' and facere 'to make' .. from very early history to modern times, defensive walls have often been necessary for cities to survive in an ever-changing world of invasion and .
a disappearing gun, a gun mounted on a disappearing carriage, is an obsolete type of artillery which enabled a gun to hide from direct fire and observation. the overwhelming majority of carriage designs enabled the gun to rotate backwards and down behind a parapet, or into a pit protected by a wall after it was fired; a small number were simply barbette mounts on a retractable platform.
in the roman republic and the roman empire, the latin word castrum plural castra was a building, or plot of land, used as a fortified military camp.in english, the terms roman fort, roman camp and roman fortress are commonly used for castrum.however, scholastic convention tends toward the use of the words fort, camp, marching camp and fortress as a translation of castrum.
a hardened aircraft shelter has or protective aircraft shelter pas is a reinforced hangar to house and protect military aircraft from enemy attack. cost considerations and building practicalities limit their use to fighter size aircraft.
fort orange, at the southern entrance of the channel, which is the main port of the island itamaracá . it is a strong square with four bastions, high, in a ditch some distance, but little deep and dry, is surrounded by a strong palisade. there are 12 cannon, namely: 6 bronze and 6 iron. the brass are 1 of 26 lb, 1 of 18 lb, 3 of 12 lb and 1 of 6 lb, the iron are: may 2 of 5 lb and 4 of 4 lb.
a check dam is a small, sometimes temporary, dam constructed across a swale, drainage ditch, or waterway to counteract erosion by reducing water flow velocity. check dams themselves are not a type of new technology; rather, they are an ancient technique dating from the second century a.d. check dams are typically, though not always, implemented in a system of several dams situated at regular .
the cheval de frise plural: chevaux de frise ʃə.vo də fʁiz , 'frisian horses' was a medieval defensive anti-cavalry measure consisting of a portable frame sometimes just a simple log covered with many projecting long iron or wooden spikes or spears. they were principally intended as an anti-cavalry obstacle but could also be moved quickly to help block a breach in another barrier.
robinson barracks is a military base of u.s. in the burgholzhof community in the northern stuttgart district of bad cannstatt.unlike patch barracks and kelley barracks, also located in stuttgart, the modern robinson barracks is now largely a residential neighborhood for us department of defense personnel stationed in the greater stuttgart area operated and administered by imcom- europe.
our host and the crew work outdoors installing the farmhouse's redwood gazebo and stockade fence. in the apartment kitchen, richard trethewey explains the installation of a sink and hot water heater. 4–22 'the arlington house - 22' november 14, 1982
the hudson river chain was two chain booms and two chevaux de frise constructed from 1776 to 1778 during the american revolutionary war across the hudson river as defenses to prevent british naval vessels from sailing upriver. these defenses along the hudson river were overseen by the highlands department of the continental army.the most significant and successful was the great chain .