In 1956 several members of the newly reformed Luftwaffe went to Chivenor for a short jet fighter refamil course, including if I remember correctly, Majors Barkhorn (301 kills) and Hartmann (352 kills). One of the young Hunter PAIs (pilot attack instructors) was briefing for a high quarter attack exercise which hopefully ended at about 200 yds still with some deflection when one or other of them politely pointed out that most of his kills had been achieved from fifty metres or less, line astern.