It derives its codes from Fort Leavenworth. While many facilities at Fort Leavenworth are named for the Command and General Staff College founder William Tecumseh Sherman the airfield is actually named for an early Army Aviation pioneer Major William Carrington Sherman (1888–1927) who died in 1927 at Ft Leavenworth while there as an instructor. William Sherman wrote the Army's first airplane tactics manual (in 1921) -- "Air Tactics" as well as several other army airplane manuals and histories.