The German Wehrmacht command ordered in 1942 the growth of an easy semi-track load carring automobile, which may replace the present 3 and 5 ton tractors. Bussing/NAG was granted utilizing the agreement and in 1943 the production started at a reduced rate. The non armoured load carrier with a canvas changed into armoured Flak carriers. The track suspension system had been similar to the one used for the Panther tanks. An overall total of 825 sWS vehicles had been made of 1943 to 1945."",0"