History
There was considerable industrial collaboration between Germany and Japan before and during World War II, and the fact that the Germans were able to send complete aircraft to Japan after Pearl Harbor was surprising, especially since they almost had to be sent by submarine. During 1941, the Japanese Army received 5 Bf-109E-7’s, and these were thoroughly tested by the Army, who did not select the type for production, but they did use the DB-601 engine in its Kawasaki Ki-61 “Hein” (Tony) fighter of 1942. These aircraft were delivered in standard Luftwaffe camouflage, were marked with standard Japanese Hinomarus, and lacked at least wing armament and pilot armor. From available photos, it is not possible to tell whether the aircraft retained their fuselage-mounted machine guns. However, the spinners were the type which equipped engine-mounted cannon-armed fighters, so the question of cowl machine guns is not possible to determine.