Solid rocket motor development in the U.S. Air Force land-based intercontinental ballistic missile programs is briee y described. The new, radical approach to program management adopted by Bernard Schriever and the U.S. AirForceWesternDevelopmentDivisionin1954ispresentedasoneofthemajorreasonsfortheoutstandingsuccess of Minuteman I, II, and III; Peacekeeper; and Small Intercontinental Ballistic Missile Program. A broad technical discussion is included of solid rocket motor technical challenges and growth in performance and capability for Minuteman through Peacekeeper and the small intercontinental ballistic missile. Particularly signie cant are the service life characteristics of the three-stage solid rocket boosters. Data and future predictions are also provided. Finally, current and future challenges in the development of solid rocket motors to sustain the U.S. Air Force deployed intercontinental ballistic missile weapon systems are briee y discussed.