The German Wehrmacht demand ordered in 1942 the growth of an easy semi-track load carring vehicle, that could change today's 3 and 5 ton tractors. Bussing/NAG was awarded utilising the contract and in 1943 the manufacturing started at a low rate. The non armoured load carrier with a canvas became armoured Flak businesses. The track suspension system system was in fact similar to the one useful for the Panther tanks. An overall of 825 sWS vehicles was indeed made from 1943 to 1945."",0"