High Quality Content by WIKIPEDIA articles! Caleb Vance Haynes (March 15, 1895 – April 5, 1966) was a United States Air Force (USAF) major general. The grandson of a famous Siamese Twin, he was used by the Air Force as an organizer, able to create air units from scratch. He commanded a large number of groups, squadrons and task forces before, during and after World War II.