I've read a few myself. I always remember a quote but can't remember who was credited with it (Richthofen or Galland - or if just apocryphal), when asked the question over any guilt for shooting down pilots replied
'I don't shoot down pilots, I shoot down enemy planes'
Yes, I think I have heard that before too. I believe it was pretty common to view it as destroying an enemy machine, be it aircraft, ships or tanks, and not killing a human being. The latter came later when there was time for some inner reflection on the matter.
I will always remember my Uncle, who survived 4 years on the Russian Front, saying that it did not matter how good a soldier you were that it was luck that got you through in the end. I think I will take an old "Sand Hassen's" word on that.
Bob