The military light railways in France were of 600 mm (1 ft 11+5⁄8 in) gauge and used a variety of steam and petrol locomotives from French, British and American builders.
Hundreds of locomotives were built by companies such as Hunslet, Kerr Stuart, ALCO, Davenport, Motor Rail and Baldwin to work these lines.
These were mostly British ex-railwaymen pressed into service, though Australian, South African and Canadian gangs served with distinction.
Having built thousands of miles of new frontier track in Western Canada in the previous decades, these "colonials", led by J. Stewart, supplied the Canadian Corps who went on to victory at Vimy.
The ebb and flow of war meant that rail lines were built and rebuilt, moved and used elsewhere, but by the latter years of Passchendaele, Amiens and Argonne, light railways came into their own and pulled for the final victory.
1215 of 1916, was repatriated from Australia in 2008 where she had worked since 1924 on the sugar cane railways of Queensland, before ending up at Rowan Bay Bush Children's Home in a playground around 1962.
[6] This is the locomotive which is now preserved at the Australian War Memorial, Canberra, Australia, although she may be in store and not on public display.