article incorporates material from Japanese Wikipedia page 第51師団 (日本軍), accessed 2 June 2016 "51 Division (Japan)". Axis History Factbook. Retrieved 3 January...

(飛行集団, Hikō Shudan). In 1942, the Air Corps were renamed Air Divisions (飛行師団, Hikō Shidan), to mirror the terminology for infantry divisions, but the structure...