Boyd flew a short tour (22 missions instead of 100) in F-86 Sabres during the Korean War, during which he served as a wingman and never fired his guns or claimed an aerial kill. Boyd was later assigned to the USAF Weapons School, where he became head of the Academic Section and wrote the tactics manual for the school. Boyd was also brought to the Pentagon by Major General Arthur C. Agan, Jr. to do mathematical analysis that would support the McDonnell Douglas F-15 Eagle program in order to pass the Office of the Secretary of Defense's Systems Analysis process.