Due to the demand for assault guns, the StuG IV was formed from a combination of the slightly modified StuG III assault car structure and a Panzer IV chassis . It began to be produced since December 1943 by the firm Krupp and were built around 1100 units. They used the Panzer IV chassis because Krupp did not build the StuG III.
The StuG IV came to be known as a very effective tank destroyer, especially on the Eastern Front . It had a maximum space for four crew members, and was mainly supplied to the infantry divisions.