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A trench railway was a type of railway that 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.
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 Structure gauge and small-radius curves. Derailments were common, but the light rolling stock was relatively easy to rerail. 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 smoke that revealed their location to enemy artillery and aircraft. They 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 as horses in warfare remained essential to logistics. Fodder for horses constituted the single biggest commodity exported from Britain to France during the war.
The French military had 62 Péchot-Bourdon type built between 1888 and 1914. Baldwin Locomotive Works built 280 more during the war. The "Système Péchot" as it is named in French became the dominant system for trench railways with an estimated of track built by the 5th engineer regiment.
250 0-6-0T of Decauville's Progres design were built for military service. 32 0-6-0T of American design and 600 gasoline mechanical locomotives were purchased from Baldwin Locomotive Works.
The Maginot Line employed a gauge supply system of petrol-powered armoured locomotives and underground electric locomotives pulling cars of World War I design. Two Péchot-Bourdon locomotives were preserved in the technical museums of Dresden and the railway museum of Požega. A portion of the Somme battlefield railway continued in operation and has been preserved as the heritage railway Froissy Dompierre Light Railway.
An 0-8-0T Brigadelok design with Klien-Lindner articulation of the front and rear axles was adopted as the new military standard in 1901. Approximately 250 were available by 1914, and over two thousand were produced during the war. A Brigadelok typically handled six loaded cars up a 2% grade.
Germany also had approximately five hundred 0-4-0T, three hundred 0-6-0T and forty 0-10-0T locomotives of other designs in military service.
Deutz AG produced two hundred 4-wheel internal combustion locomotives with an evaporative cooling water jacket surrounding the single cylinder Diesel engine. Fifty similar 6-wheel locomotives were produced by Deutz.
Approximately 20% of the Brigadeloks saw post-war use. Government railways of (Yugoslavia), North Macedonia, Serbia and Poland made extensive use of the military locomotives. Significant numbers were used in Hungary, France, Latvia, Bulgaria and Romania while smaller numbers went overseas to Africa, Indonesia, Japan and North America. Much of the trench railway equipment remaining in Belgium at the end of hostilities was shipped to the Belgian Congo to build the Vicicongo line.
Britain pioneered the use of petrol-powered, 4-wheel synchromesh mechanical drive locomotives (known as ) for daylight use within visual range of the front. In 1916 the War Office required "Petrol Trench Tractors" of 600-mm gauge that were capable of drawing 10 to 15 tons at per hour. Early tractors weighed 2 tons. Total production was 102 Ernest E. Baguley tractors, 580 Motor Rail tractors and 220 Motor Rail tractors. An additional two hundred petrol-electric tractors were produced by British Westinghouse and Dick, Kerr & Co.
Former British trench railway equipment was put to civilian use rebuilding Vis-en-Artois between Arras and Cambrai. Twenty Hudswell-Clarke and Barclay 0-6-0T, seven Alco 2-6-2T and 26 Baldwin 4-6-0T engines saw service until 1957.
The standard American military railway car was wide and long riding on two 4-wheel archbar bogies. 1,695 of these cars were built by the Magor Car, American Car and Foundry and Ralston Steel Car Company. Most were , but some had gondola sides, others had roofs (either with open sides or like conventional ) and others carried shallow rectangular tanks with a capacity of of drinking water. The and were regarded as top-heavy and prone to derailment; so most loads were carried on and gondolas. Approximately 1,600 4-wheel side dump cars were produced in several versions for construction earthmoving. The total number of cars shipped to Europe was 2,385.
Davenport Locomotive Works built one hundred 2-6-2T and Vulcan Iron Works built thirty more. Whitcomb Locomotive Works built 74 4-wheel gasoline mechanical locomotives. None of the Davenport, Vulcan and Whitcomb production saw overseas service, but some survived to World War II on United States military bases including Fort Benning, Georgia, Fort Sill, Oklahoma, Fort Benjamin Harrison, Indiana, Fort Dix, New Jersey and an arsenal in Alabama.
Russian equipment
During the First World War Russian Empire used both French Decauville and gauge systems. More than of narrow gauge trench railways were built during the war. Kolomna Locomotive Works built 0-6-0T locomotives (I, N, R, T series). 70 locomotives were purchased from ALCO. Baldwin Locomotive Works built 350 seven-tonne 6-wheel gasoline mechanical locomotives for Russia's gauge in 1916.Small 1982 p.55Westing 1966 p.76
See also
Bibliography
(1992). 9781550460216, Boston Mills Press. ISBN 9781550460216
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