” I then ordered the challenge to be made as soon as my sights were on and I knew the armament was ready, and the signalman made it slowly. No reply was received. After about 20 seconds I ordered the challenge to be made again. During this time I had been studying the submarine very closely indeed. “
Twelve Spitfire aircraft (6 of ‘A’ flt and 6 of ‘B’ flt) ordered to intercept enemy air raid which turned out to be a friendly formation of Hurricanes of No. 56 Squadron, North Weald. P/O BYRNE and a and P/O FREEBORN opened fire on two Hurricanes thinking they were Hostile Escort Fighters.