Daytime aerial defence against the USAAF's strongly defended heavy bomber forces, particularly the Eighth Air Force and the Fifteenth Air Force, had its successes through the calendar year of 1943. But at the start of 1944, Eighth AF commander Jimmy Doolittle made a major change in offensive fighter tactics, which defeated the Luftwaffe's day fighter force from that time onwards. Steadily increasing numbers of the superlative North American P-51 Mustang single-engine fighter, leading the USAAF's bombers into German airspace defeated first the wings, then the Fw 190A Sturmböcke.
Daytime aerial defence against the USAAF's strongly defended heavy bomber forces, particularly ?the Eighth Air Force and the Fifteenth Air Force, had its successes through the calendar year of 1943. But at the start of 1944, Eighth AF commander Jimmy Doolittle made a major change in offensive fighter tactics, which defeated the Luftwaffe's day fighter force from that time onwards. Steadily increasing numbers of the superlative North American P-51 Mustang single-engine fighter, leading the USAAF's bombers into German airspace defeated first the wings, then the Fw 190A Sturmböcke.