III号突撃砲
The 7.5 cm KwK 40 "(7.5 cm Kampfwagenkanone 40)" was a German 75 mm Second World War era vehicle-mounted gun, used as the primary armament of the German Panzer IV "(F2 models onwards)" medium tank and the Sturmgeschütz III "(F models onwards)" and Sturmgeschütz IV tank destroyers/assault guns.