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A tripwire-triggered pipe bomb mock-up used to train US military service personnel. A pipe bomb is an improvised explosive device (IED) that uses a tightly sealed section of pipe filled with an explosive material.
Trip wires are frequently used in booby traps — where either a tug on the wire, or the release of tension on it, will trigger the explosives. Soldiers sometimes detect the presence of tripwires by spraying the area with Silly String. It will settle to the ground in areas where there are no wires; where wires are present, the "strings" will ...
One end of the bracket has a point allowing it to be driven into the ground, while the other end has a spring loaded spoon holder that allows for two way release. The soldier installing the flare can use this feature to set up the tension so that if the trip wire is detected and cut the flare still ignites.
A tripwire force (sometimes called a glass plate) is a strategic approach in deterrence theory. The tripwire force is a military force smaller than that of a potential adversary, which is designed to signal the defending side's commitment to an armed response to future aggression without triggering a security spiral .
Dummy tripwires can be added to cause further confusion. If anti-personnel mines are unavailable, it is very easy to connect hand-grenades to the wire using trip-wires. If the use of lethal explosive devices is deemed to be unsuitable, it is easy to emplace tripflares in and around the wire obstacle in order to make night-time infiltration harder.
On firing, a metal base plate remains in the ground, while the mine body is thrown up by a small lifting charge, but remains attached to a strong wire tether. When the end of the tether is reached at a height of approximately 0.5 m, the main charge explodes and scatters fragments of the casing across a wide area.
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Meant to trap, maim, and make easy targets of the opponent, they ranged from a single strand of wire arranged to trip men in the dark, to a 150-metre-long construction 30 ft wide (9.1 m) and 5 or 6 ft (1.5 or 1.8 m) tall [3] By spring of 1915, barbed wire entanglements were an unavoidable element in trench warfare, and posed a serious threat to ...