Germany decided to create a new range of standardized chassis for their vehicles. In 1935 Auto Union/Horch Chassis I was produced for heavy passenger cars. The chassis allowed for either rear mounted or front mounted engines depending on the job. The original chassis that had front and rear wheel steering was designated 1A. From 1939-40 a four-wheel drive variant was available and designated 1B. The Horch served throughout WWII on every front as a passenger car, a communications car, an ammo vehicle, an anti-aircraft gun plus more.