In the 1930s the German Army was starting to realize what a logistical nightmare it was to have over 100 vehicle types and General von Schell, director of mechanization, was tasked to reduce the amount of types and he was able to get it down to 30 types. In the 3 ton medium truck category the Opel Blitz was chosen.
The engine powered the rear axle.
The crew cab was made from pressed steel. When materials were harder to come by the cab was made from wood and cardboard and called Ersatz cabs.
The body was made from wood.
The fuel tank was located under the driver.