On 14 July 1950, Fifth Air Force headquarters was split into two headquarters squadrons.
Headquarters Squadron, Fifth Air Force (Rear), remained at its original station at Nagoya, Japan, and retained responsibility for the air defense of Japan and for air units remaining in Japan, some of which flew missions into Korea.
Headquarters Squadron, Fifth Air Force (Advance), deployed to Taegu, South Korea, on 24 July. This headquarters was soon redesignated Fifth Air Force in Korea.
As soon as housing and communications were provided in the missionary school compound which would shelter it in Taegu City, Fifth Air Force (Advance) began to move to the forward location, and at 0001 hours on 24 July Headquarters and Headquarters Squadron, Fifth Air Force (Advance), became operational in Taegu City.#119
August 9, 1950
In a subsequently issued re-designation [FEAF G.O. #46 9 Aug] which was made retroactive on 24 July, General Stratemeyer established the Fifth Air Force in Korea, and recognized it as a major command of the Far East Air Forces.#120
At Itazuke Air Base on Kyushu, southernmost of the main Japanese islands, was the 8th Fighter-Bomber Wing, augmented by the 68th Fighter All-Weather Squadron. The 8th Group was equipped with F-80C jet interceptors; the 68th Squadron flew F-82 all-weather fighters.
Misawa Air Base, on the northeastern shore of the main Japanese island of Honshu, defended the northern frontiers of Japan. Here was based the 49th Fighter-Bomber Wing, whose tactical group flew F-80C Shooting Star fighters. The center of gravity of the Fifth Air Force lay in the Kanto Plains of Honshu, around Tokyo.
Yokota Air Base served the 35th Fighter-Interceptor Wing, the 339th Fighter All-Weather Squadron, and the 8th Tactical Reconnaissance Squadron (Photo Jet). The aircraft complement at Yokota included F-80C's, F-82 all-weather fighters, and RF-80A photo reconnaissance planes.
For the performance of its defensive mission, the Fifth Air Force was provided with several aircraft control and warning groups, whose personnel manned the large fixed-radar and aircraft-control facilities which were deployed throughout Japan.#4