The German Sd Ah 115 trailer was used to transport armoured vehicles up to 10 tons. Typically it was towed by a 9 ton truck such as the Büssing-NAG, FAUN or the Sd Kfz 7 half track. Introduced in April 1938, the rear axle had to be uncoupled to load vehicles. It was also used as a loading ramp for the 9 ton trucks.