Book excerpt: This is the exciting story of the development of U.S. airmobile power from theory to practice, involving air transport, fixed wing aircraft, and attack helicopters culminating in Vietnam War operations. It includes analysis of airmobile combat operations; doctrinal and interservice disputes; equipment descriptions; and the organization of combat and support units. It also includes data about airmobility in South Vietnam's army and it features personal reflections of the author, who was at the center of airmobility development and who commanded large airmobile units. John J. Tolson in June 1939 participated in the first tactical air movement of ground forces by the U.S. Army. He was in all combat jumps of the 503d Parachute Infantry Regiment during World War II, became an Army aviator in 1957, and served as Director of Army Aviation and Commandant of the Army Aviation School. From April 1967 to July 1968 he commanded the 1st Cavalry Division (Airmobile), Vietnam. (Includes many maps and photographs)