The SdKfz 6 (Sonderkraftfahrzeug 6) was a half-track military vehicle used by the German Wehrmacht during the Second World War. It was designed to be used as the main towing vehicle for the 10.5 cm leFH 18 howitzer. However it proved far too expensive and was phased out in 1941 for more economic halftracks. Existing SdKfz 6's were maintained in the German army afterwards.
Read more about SdKfz 6: Variants