25th Air Division
| 25th Air Division | |
|---|---|
|
|
| Active | 1948–1952, 1952-1990 |
| Country |
 United States
|
| Branch |
 United States Air Force
|
| Role | Command of air defense forces |
| Part of | Tactical Air Command |
| Decorations | Air Force Outstanding Unit Award |
| Insignia | |
| 25th Air Division emblem (Approved 7 February 1953) |  |
The 25th Air Division is an inactive United States Air Force intermediate echelon command and control organization. It was last assigned to First Air Force, Tactical Air Command (ADTAC). It was inactivated on 30 September 1990 at McChord Air Force Base, Washington.
The command was activated on 25 October 1948 being the first Air Division for air defense. Its headquarters was at Silver Lake Air Warning Station, near Everett, Washington under Continental Air Forces. The 25th AD did not assume any command responsibilities until 1949 when it became an intermediate level command under the Air Defense Command, Western Air Defense Force. Its initial Area of Responsibility (AOR) was a large area of the northwest Continental United States, from the 103rd meridian west and north of the 42nd parallel north. This encompassed an area consisting of the states of Washington, Oregon, Idaho, Montana and Wyoming and the western parts of North and South Dakota as well as Nebraska.
During the 1950s the AOR of the 25th AD changed frequently, but its core area always included the area of Washington State west of the Cascade Mountains. On 1 January 1951, Air Defense Command regained major command status, and the 25th AD was one of four Air Divisions assigned to the new command. Later that year, on 15 September HQ 25th AD was moved from Silver Lake to McChord Air Force Base, near Tacoma, Washington.
Beginning on 1 January 1958, it the command organization for the Seattle Air Defense Sector Semi Automatic Ground Environment (SAGE) Data Center (DC-12) at McChord. A few months later, on 1 September, the Portland Air Defense Sector, with its SAGE Direction Center (DC-13) at Adair Air Force Station, Oregon also came under the 25th AD; on 8 September the Spokane Air Defense Sector and DC-15 at Larson Air Force Base toned the 25th AD. In 1959, the Reno Air Defense Sector and DC-16 at Stead Air Force Base, Nevada was also incorporated.
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