By World War II, many nations had signed the Third Geneva Convention of 1929 that protected prisoners of war and set standards for their treatment.
Walter Hustus of South Portland went into the U.S. Air Force in the fall of 1942. He wrote letters home from basic training in Atlantic City, New Jersey; then from various training locations, including Rattlesnake Bomber Base in Pyote, Texas.
By November 1943, he was "somewhere in England" with the 303rd Bomb Group (Hell's Angels).