An Anti-tank gun is a form of artillery designed to destroy armored fighting vehicles, normally from a static defensive position.
The Littlejohn adaptor was a device that could be added to the British QF 2 pounder (40 mm) anti-tank gun.
The Luftwaffe was the aerial warfare branch of the combined German Wehrmacht military forces during World War II.
A shell is a payload-carrying projectile that, as opposed to shot, contains an explosive or other filling, though modern usage sometimes includes large solid projectiles properly termed shot.
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.
2.8 cm schwere Panzerbüchse 41 (sPzB 41) or "Panzerbüchse 41" was a German anti-tank weapon working on the squeeze bore principle.
The 7.5 cm Pak 41 was one of the last German anti-tank guns brought into service and used in World War II and notable for being one of the largest anti-tank guns to rely on the Gerlich principle (pioneered by the German gun-designer Hermann Gerlich, who developed the principle in the 1920s, reportedly for a hunting rifle) to deliver a higher muzzle velocity and therefore greater penetration in relation to its size.