Aviation Cadet Training Program. He was initially medically delayed because of his severed ring finger, but was deemed able to fly. Slayton began flight training in Vernon, Texas, where he trained on the Fairchild PT-19, the PT-17 Stearman, and the AT-6 Texan. After three months of primary training, Slayton moved to Waco, Texas, for basic flight training, where he flew the BT-13 Valiant. Despite Slayton's wishes to fly single-engine fighter aircraft, he was selected to fly multi-engine aircraft. Slayton began multi-engine training on the Beechcraft AT-10, Cessna AT-12, and the Curtis AT-9. Slayton graduated from flight training on April 22, 1943, and was assigned to fly on the B-25 Mitchell, his last choice for aircraft. Slayton moved to Columbia Army Air Base in South Carolina for the three-month-long B-25 Mitchell training. After completing training, he was assigned to the 340th Bombardment Group, and departed for the European theater of operations on ship from Newport News, Virginia. After a stop in Zerni, North Africa, his convoy traveled to Naples, Italy. While traveling near the Strait of Gibraltar, their ships came under attack from German bombers and submarines. After he arrived in Naples, the 340th Bombardment Group moved to San Petrazio, where Slayton flew combat missions into the Balkan Peninsula. After six weeks, he moved to Foggia, where 48 aircraft were destroyed after an eruption of Mount Vesuvius. Afterwards, Slayton flew out of Salerno and Corsica, where he upgraded from copilot to pilot. After 56 combat sorties, Slayton completed his combat tour and returned to the U.S. in May 1944. Immediately upon his return to Columbia Army Air Base to serve as a B-25 instructor, Slayton applied and was accepted to fly the new A-26 Invader bomber aircraft. He moved to Selfridge Field in Michigan for training, and began preparing for a deployment to the Pacific. In July 1945, he arrived on Okinawa Island and joined the 319th Bombardment Group. He flew seven combat missions over Japan, and encountered little Japanese resistance. Slayton flew his final combat mission on August 12, three days after the bombing of Nagasaki and spent two months waiting for his return to the U.S. After the war, Slayton worked as B-25 instructor in Albany, Georgia, and Boca Raton, Florida and separated from the Army in November 1946. Post-World War II After he was discharged from the Army, Slayton enrolled at the University of Minnesota, in Minneapolis, and