Yes he was an American. I know that he said that he built bridges. He also said that he "was all over" in the south pacific, Germany, and Italy (that I know of). I know that it was the 533rd.He said that later he volenteered to join a commando unit that was in the area and in need of personel. I'm pretty sure that any mission or work that they did was on the ground in Germany. I don't believe he was ever involved with the Air Force.