The Opel Blitz came as a Type S 2 wheel drive and a Type A or "Allrad" that had a 4 x 4 chassis, enabling it to cope with most conditions and provided a superb structure on which were built such conversions as a radio truck (a metal and wood superstructure on the rear that housed radio equipment), Kfz. 385 Tankwagon (a specialized fuel tanker conversion), plus a variety of local workshop produced anti aircraft weapon platforms - mounting everything from the standard Wehrmacht 20mm & 37mm AA to the more feared Quad 20mm Flakvierling 38 AA gun.
Perhaps a more famous adaptation was the Opel Maultier "Mule" half-track. Introduced in 1941 following the dire Rasputitsa conditions of the Eastern Front that had brought the entire army to a stand still. This conversion, utilizing the track system of the obsolete Panzer I, gave the German army a very competent all purpose mover and it would see action through out the rest of the war.