Flying as Leader of B Flight, 41 Sqn, on 15th August 1940, Pilot Officer Mike Johnson and the rest of his flight found themselves among a mass of Messerschmitt Bf.110s that had been detailed to escort a bomber force of Heinkel He111s on a raid on the North of England. Having made one head-on attack on one of the Bf.110s, Shipman manoeuvred his Spitfire Mk.1 onto the tail of another and fired a long burst into it.