List of former unified combatant commands
Since the first Unified Command Plan was approved on 14 December 1946, several unified and specified combatant commands have been established and disestablished. Some of the commands existed before they were officially established as unified or specified commands, or continued to exist after they were disestablished as such.
| Emblem | Command | Acronym | Type | Established | Disestablished | Comments |
| Strategic Air Command | SAC | Specified | 1946-12-14 | 1992-05-31 | Replaced by United States Strategic Command, which also took over its command facilities at Offutt AFB, NB. | |
| Alaskan Command | ALCOM | Unified | 1947-01-01 | 1975-06-30 | Became a subunified command under U.S. Pacific Command; subsequently a subunified command under U.S. Northern Command | |
| Far East Command | FECOM | Unified | 1947-01-01 | 1957-07-01 | Duties assumed by United States Pacific Command | |
| Caribbean Command | CARIBCOM | Unified | 1947-11-01 | 1963-06-06 | Replaced by USSOUTHCOM | |
| U.S. Naval Forces, Eastern Atlantic and Mediterranean | NELM | Specified | 1947-11-01 | 1963-12-01 | Became part of USEUCOM as its USN component and renamed United States Naval Forces Europe. | |
| Atlantic Command | LANTCOM | Unified | 1947-12-01 | 1999-09-31 | Replaced by United States Joint Forces Command | |
| Northeastern Command | USNEC | Unified | 1950-10-01 | 1956-09-01 | Most functions assumed by Northeast Air Command. | |
| United States Air Forces in Europe | USAFE | Specified | 1951-01-22 | 1956-07-01 | Became part of USEUCOM as its USAF component command; still remains a USAF major command | - |
| Continental Air Defense Command | CONAD | Unified | 1954-09-01 | 1975-06-30 | Replaced by ADCOM | |
| Strike Command | USSTRICCOM | Unified | 1962-01-01 | 1971-12-31 | Reorganized as United States Readiness Command | |
| Aerospace Defense Command | ADCOM | Specified | 1975-07-01 | 1979-10-01 | Duties assumed by Air Defense, Tactical Air Command ; responsibilities now rest with First Air Force. | |
| Readiness Command | USREDCOM | Unified | 1972-01-01 | 1987-04-15 | ||
| Military Airlift Command | MAC | Specified | 1977-02-01 | 1987-07-01 | Duties as a specified command assumed by USTRANSCOM; later replaced as a USAF major command by Air Mobility Command in 1992 | |
| U.S. Space Command | USSPACECOM | Unified | 1985-09-23 | 2002-10-01 | Duties assumed by USSTRATCOM. Re-established 2019-08-29. | |
| Joint Forces Command | USJFCOM | Unified | 1999-10-01 | 2011-09-03 | Duties assumed by the Joint Staff and various other combatant commands |