First Lieutenant Hanson arrived in the South Pacific in June 1943 and his daring tactics and total disregard for death soon became well known. A master of individual air combat, he downed 20 enemy planes in six consecutive flying days. He was commended in the citation accompanying the Medal of Honor for his bold attack against six enemy torpedo bombers, November 1, 1943, over Bougainville Island, and for bringing down four Zeros, the premier Japanese fighter, while fighting them alone over New Britain, January 24, 1944.