First Air Army (Japan)
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The First Air Army (Japanese: 第1航空軍, romanized: Dai 1 Kōkū gun) was part of the Japanese Imperial Army during World War 2. It had its headquarters in Tokyo, basing in the Kanto Plain. The 1st was responsible for covering the Japanese home islands, Taiwan, Korea, Kuril Islands, and South Sakhalin.
Formed under Military Ordinance Order No 31 on 13 April 1942 and initially headquartered at Gifu on 5 June 1942 before being relocated to Miyakezaka, Tokyo in response to the allied airstrikes on mainland Japan. In July July 1944, the Headquarters was moved to the main building of Seikei University, Musashino-shi.
On 8 April 1945, in accordance with Operation Ketsugō (決号作戦, ketsugō sakusen), the countermeasure plan of Operation Downfall, the 1st together with the 2nd, 5th, and 6th Air Armys were transferred to the Headquarters of the Army Air Force. It remained under their command until the end of the war.