If I was brave I would like to be a high ranked german officer and try to get near the Führer to kill him. At best before 1943, so that there could have been a chance of terminating the war in a diplomatic way. As a nice result Germany hadn't lost his territories in East-Prussia.
But because of the fact that I am not as brave, I would like to be in a secure distance to the front-line as member of a german supply unit.