The Schwerer Wehrmachtschlepper (or sWS) was a German Cargo half track used for towing large artillery pieces with room for the crew in the back. The sWS was originally designed to replace the earlier Sd Kfz 7 and Sd Kdz 11. The sWS was also used to mount the 15cm Nebelwerfer 42 and as depicted here as an anti aircraft half track, mounting the 3.7cm Flak43 which was placed on a turret with a gun shield on the rear of the half track.