Kampfwagenkanone (short: KwK, literally "fighting vehicle cannon") was the designation to any type of tank gun mounted in an armoured fighting vehicle or infantry fighting vehicle of the Nazi-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 (en: tank gun).[1]