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trench railways
Trench railways represented military adaptation of early 20th century railway technology to the problem of keeping soldiers supplied during the static trench warfare phase of World War I. The large concentrations of soldiers and artillery at the front lines required delivery of enormous quantities of food, ammunition and fortification construction materials where transport facilities had been destroyed. Reconstruction of conventional roads (at that time rarely surfaced) and railways was too slow, and fixed facilities were attractive targets for enemy artillery. Trench railways linked the front with standard gauge railway facilities beyond the range of enemy artillery. Empty cars often carried litters returning wounded from the front.
== Overview ==
France had developed portable Decauville railways for agricultural areas, small scale mining and temporary construction projects. France had standardized narrow gauge Decauville military equipment and Germany adopted similar feldbahn of the same gauge. British War Department Light Railways and the United States Army Transportation Corps used the French narrow gauge system. Russia used Decauville narrow gauge and narrow gauge systems.
Unskilled labourers and soldiers could quickly assemble prefabricated sections of track weighing about along roads or over smooth terrain. The track distributed heavy loads to minimize development of muddy ruts through unpaved surfaces. Small locomotives pulled short trains of capacity cars through areas of minimum clearance and small-radius curves. Derailments were common, but the light rolling stock was relatively easy to rerail.〔(【引用サイトリンク】title=Light Rail Operators, Company D, 21st Engineers )〕 Steam locomotives typically carried a short length of flexible pipe (called a water-lifter) to refill water tanks from flooded shell holes.
Steam locomotives produced enough smoke to reveal their location to enemy artillery and aircraft. Steam locomotives required fog or darkness to operate within visual range of the front.〔 Daylight transport usually required animal power until internal combustion locomotives were developed. Large quantities of hay and grain were carried to the front while horses remained an essential part of military logistics. Fodder for horses constituted the single biggest commodity exported from Britain to France during the war.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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