US soldiers of the 10th Armoured and 45th Division, 7th US Army stand on the cannon of a captured German Rail Gun in Rentwertshausen, Germany. April 1945. The 274mm. Kanone (Eisenbahn) 592(f) was originally a French Schneider Modèle 1917 ALVF weapon captured by the Germans in 1940. It could fire a 237.5 kilogram projectile to a maximum range of 29,100 meters.