of the Army Air Service resulted in the creation of the Air Combat Group (飛行戦隊, Hikō Sentai), which replaced all of the former Air Battalions and Air Regiments
Division (第10飛行師団, Hikō Shidan) - responsible for the defence of Tokyo 5th Brigade (第5飛行団, Hikōdan) 12th Brigade (第15飛行団) 16th Brigade (第16飛行団) - established
Air Squadron (第一飛行戦隊 Dai-ichi-hikō sentai) was a flying unit of the Imperial Japanese Army Air Service. The unit was established on 5 July 1938 at Kagamigahara