France, 1916, World War I, Heavy artillery in the Somme, A 274-mm gun mounted on the railway. (Photo by Photo12/UIG/Getty Images)An 8-inch Mk. VI railway gun, in use during World War One at Aberdeen Proving Grounds, Great Britain, circa 1914-1918. (Photo by Keystone View Company/FPG/Getty Images)12-inch gun on Railway mounting in action, Meaulte, August, 1916. British Front – France ’16 General Battle Somme. (Photo by: Robert Hunt Library/Windmill Books/UIG via Getty images)
