In military history, the German term Kampfgruppe can refer to a combat formation of any kind, but most usually to that employed by the Wehrmacht of Nazi Germany and its allies during World War II and, to a lesser extent, of the German Empire in World War I. It also referred to bomber groups in Luftwaffe usage, which themselves consisted of three or four Staffeln, and usually existed within Kampfgeschwader bomber wings of three or four Kampfgruppen per wing. Wikipedia