Kampfwagenkanone (KwK) (German, 'fighting vehicle cannon') was the designation given to any type of tank gun mounted in an armoured fighting vehicle or infantry fighting vehicle of the German-Wehrmacht until 1945. The wording was derived from the German nouns Kampfwagen (fighting vehicle) and Kanone (cannon or gun). However, the present-day designation in German speaking armed forces to this particular weapon system is Panzerkanone ('tank gun').[1]
Kampfwagenkanonen, developed in Germany, were normally derived from the construction concept of anti tank guns (Panzerabwehrkanone). Modifications were used in the anti-aircraft artillery (Flakartillerie) as well.