I was thinking about the reaction to having to kill other people and my older brother, who was in the 8th USAAF in SE England during WWII. He was a navigator on a B-17 and was responsible for course. So long as they were on mission and in formation, things were straight forward. In a variety of circumstances - heavy weather, unexpected heavy defense, sometimes the formation was partially or totally scattered. They couldn't land with a full load of bombs. The last option was to dump them in the Channel. First choice was "targets of opportunity." In those circumstances, the navigator was responsible for telling the pilot where they were and where to drop the bombs. He made a mistake and bombed a Dutch village. Of his 25 missions, that alone seemed to bother him. I pointed out that there undoubtedly large numbers of civilians who were killed in other, on task, missions. (We later hosted a German exchange student, whose father was from Stettin and undoubtedly hid from my brother's bombs.) He just replied that they were Germans and were the enemy. The Dutch were our allies and friends...
