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  2. Trench warfare - Wikipedia

    en.wikipedia.org/wiki/Trench_warfare

    When a major attack was planned, assembly trenches would be dug near the front trench. These were used to provide a sheltered place for the waves of attacking troops who would follow the first waves leaving from the front trench. "Saps" were temporary, unmanned, often dead-end utility trenches dug out into no-man's land.

  3. Trench map - Wikipedia

    en.wikipedia.org/wiki/Trench_map

    A trench map shows trenches dug for use in war. This article refers mainly to those produced by the British during the Great War , 1914–1918 although other participants made or used them.. For much of the Great War, trench warfare was almost static, giving rise to the need for large scale maps for attack, defence and artillery use.

  4. Tunnelling companies of the Royal Engineers - Wikipedia

    en.wikipedia.org/wiki/Tunnelling_companies_of...

    A preserved World War 1 fighting tunnel in the Vimy sector. Between October 1915 and April 1917 an estimated 150 French, British and German charges were fired in this 7 kilometres (4.3 mi) sector of the Western Front. [34] The tunnelling companies of the Royal Engineers progressively took over from the French between February and May 1916.

  5. Tunnel warfare - Wikipedia

    en.wikipedia.org/wiki/Tunnel_warfare

    Hidden trenches to assemble for surprise attacks were dug, connected via tunnels for secure fallback. [4] In action, often barriers were used to prevent the enemy from pursuing. Roman legions entering the country soon learned to fear this warfare, as the ambushing of marching columns caused high casualties. Therefore, they approached possibly ...

  6. Lochnagar mine - Wikipedia

    en.wikipedia.org/wiki/Lochnagar_mine

    The charge at Lochnagar was one of 19 mines that were dug under the German lines on the British section of the Somme front, to assist the infantry advance at the start of the battle. The mine was sprung at 7:28 a.m. on 1 July 1916 and left a crater 69 ft (21 m) deep and 330 ft (100 m) wide, which was captured and held by British troops.

  7. 185th Tunnelling Company - Wikipedia

    en.wikipedia.org/wiki/185th_Tunnelling_Company

    The tunnelling units were occupied in offensive and defensive mining involving the placing and maintaining of mines under enemy lines, as well as other underground work such as the construction of deep dugouts for troop accommodation, the digging of subways, saps (a narrow trench dug to approach enemy trenches), cable trenches and underground ...

  8. 1st Canadian Tunnelling Company - Wikipedia

    en.wikipedia.org/wiki/1st_Canadian_Tunnelling...

    The tunnelling units were occupied in offensive and defensive mining involving the placing and maintaining of mines under enemy lines, as well as other underground work such as the construction of deep dugouts for troop accommodation, the digging of subways, saps (a narrow trench dug to approach enemy trenches), cable trenches and underground ...

  9. Defensive fighting position - Wikipedia

    en.wikipedia.org/wiki/Defensive_fighting_position

    In training, DFPs are usually dug by hand or in some cases by mechanical trench diggers. On operations, explosives, especially shaped charges ("beehives"), may be used to increase the speed of development. Developing and maintaining DFPs is a constant and ongoing task for soldiers deployed in combat areas.