509th Bomb Wing
World War II
Commanded by Colonel Paul Tibbets, the unit was very secret and reported to a high command level even when training in the U.S. Very few of its members knew even partial details of the mission until very late, although they were told they could contribute to a mission that might have an extremely decisive effect on the war. They trained at a remote base under tight discipline, before moving to their Pacific operational base of Tinian.