Panzer III was the common name of a medium tank that was developed in the 1930s by Germany and used extensively in World War II. By 1942, the Panzer IV was becoming Germanys main medium tank because of its better upgrade potential. The Panzer III remained in production as a close support vehicle. The Ausf. N model mounted a low-velocity 7.5 cm KwK 37 L24 cannon - the same used by the early Panzer IV Ausf. A to Ausf. F models.