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The outbreak of World War I led to a revolution in modern warfare, and the use of barbed wire on the battlefield was one of the many technologies relied upon to hamper the enemy's attack. Used by American cattle ranchers since the 1870s, barbed wire was adapted on the Western Front to serve a more gruesome purpose than containing livestock. [2]
Jules-Louis Breton (1872-1940). The Breton-Prétot machine was a saw designed to cut the barbed wire protecting enemy trenches of World War I.The first version consisted of a small circular saw, driven by a six hp engine, attached to a long lever that was placed on a small cart with four wheels, that had to be pushed towards its objective.
World War I entanglements could in some places be tens of metres thick and several metres deep, with the entire space filled with a random, tangled mass of barbed wire. Entanglements were often not created deliberately, but by pushing together the mess of wire formed when conventional barbed wire fences had been damaged by artillery shells.
In World War I the Bangalore torpedo was primarily used for clearing barbed wire before an attack. It could be used while under fire, from a protected position in a trench. The torpedo was standardized to consist of a number of externally identical 1.5 m (5 ft) lengths of threaded pipe, one of which contained the explosive charge.
Barbed wire began to be widely used as an implement of war during World War I. Wire was placed either to impede or halt the passage of soldiers, or to channel them into narrow defiles in which small arms, particularly machine guns, and indirect fire could be used with greater effect as they attempted to pass.
Barbed wire was a farmer's product at first, but cattlemen eventually adopted it to fence off their larger tracts of land. [3] Barbed wire became an important factor in changing the cattle industry, as the free, open range became parceled off by barbed wire. Because of this development, the West saw the rise of big-pasture companies.
Concertina wire or Dannert wire [1] is a type of barbed wire or razor wire that is formed in large coils which can be expanded like a concertina. In conjunction with plain barbed wire (and/or razor wire/tape ) and steel pickets , it is most often used to form military-style wire obstacles .
On the Somme front, Falkenhayn's construction plan of January 1915 had been completed. Barbed wire obstacles had been enlarged from one belt 5–10 yards (4.6–9.1 m) wide to two, 30 yards (27 m) wide and about 15 yards (14 m) apart. Double and triple thickness wire was used and laid 3–5 feet (0.91–1.52 m) high.