These vehicles, which mounted a casemate weapon, were used extensively by the German Army throughout the 2nd World War, supplying addressing fire for infantry as well as used as tank-busters. A few hundred of the particular self-propelled weapon - constructed on a Pz.Kpfw. IV tank framework - had been built-in several versions that underwent constant armour and weapon upgrades to help keep pace because of the growth of enemy tools.
