From The New Yorker:
In 1943, when I was a fifteen-year-old schoolboy in Danzig, I volunteered for active duty. When? Why? Since I do not know the exact date and cannot recall the by then unstable climate of the war, or list its hot spots from the Arctic to the Caucasus, all I can do for now is string together the circumstances that probably triggered and nourished my decision to enlist. No mitigating epithets allowed. What I did cannot be put down to youthful folly. No pressure from above. Nor did I feel the need to assuage a sense of guilt, at, say, doubting the Führer’s infallibility, with my zeal to volunteer.
It happened while I was serving in the Luftwaffe auxiliary—a force made up of boys too young to be conscripts, who were deployed to defend Germany in its air war. The service was not voluntary but compulsory then for boys of my age, though we experienced it as a liberation from our school routine and accepted its not very taxing drills. Rabidly pubescent, we considered ourselves the mainstays of the home front. The Kaiserhafen battery became our second home. At first there were attempts to keep school going, but, as classes were too often interrupted by field exercises, the mostly frail, elderly teachers refused to travel the wearisome dirt road to our battery.