Inside view of the barrel of  60-cm Mörser &quot;Karl&quot; (Gerät 040, gun &quot;Ziu&quot;). During the Warsaw Uprising, August 18, 1944. (Bundesarchiv, Bild 101I-695-0424-29A)

Barrel of 60-cm Mörser

German SS soldiers are seen operating an antitank gun in the streets of Mariupol, in southeastern Ukraine, in October 1941, during the German occupation of the Donbass region in the Soviet Union.(rudeerude)

Ukraine, in October 1941

8,8-cm-Flak 36 at Bir Hacheim/Libya, June 4, 1942. (Bundesarchiv, Bild 101I-443-1574-23)