The Panzerkampfwagen IV (Pz.Kpfw. IV), commonly known as the Panzer IV, was a German medium tank developed in the late 1930s and used extensively during the Second World War. Its ordnance inventory designation was Sd.Kfz. 161. The Panzer IV was originally intended to be used only on a limited scale, so initially Krupp was its sole manufacturer. Prior to the Polish campaign, only 217 Panzer IVs had been produced: 35 Ausf. A; 42 Ausf. B; and 140 Ausf. C; in 1941, production was extended to Vogtländische Maschinenfabrik ("VOMAG") located in the city of Plauen and the Nibelungenwerk in the Austrian city of St. Valentin.
