Don't forget the Merchant Marines: they experienced higher casualty rates than the Navy at some points in the U-boat war in the Atlantic.
Here's one for you:
Jeff Dickson was an American boxing promoter in Europe in the interwar period, elected to the International Boxing Hall of Fame in 2000. This British 1930s RPPC shows him with fellow HOFers Thil and Brown. In 1943, Capt. Jeff Dickson was killed in action over Germany while serving in the U.S. Air Force during World War II.