Production of the Sd Kfz 11 began in 1939. The basic version served as an artillery tractor, usually for the 10.5cm leFH 18/36, However other variants were used such as this Sd Kfz 11/4 Nebelkraftwagen used for towing the six barrel 15cm Nebelwerfer 41 and five barrel 21cm Nebelwerfer 42.