The Schwerer Wehrmachtschlepper (sWS) was made as a medium half-track and always transport materials to front-line troops or as a towing automobile the light artillery. However, regarding the big back flat load compartment other applications have already been developed. One modification ended up being the Panzerwerfer 42 auf sWS, a 10 barreled 15 cm Nebelwerfer 42 rocket launched put over an armored ammo storage compartment. The rocket launcher, developed as product to create smoke shows, have already been quickly used as real artillery able to introduce high-explosive ammunitions. It could shoot the rocktes with impressive and life-threatening results. Initial framework of transportation car was in fact strengthened with extra shields to protect the crew through enemy fire and from negative effects of rocket launcher.
