The 66th Division (第66師団, Dai-rokujūroku Shidan) was an infantry division of the Imperial Japanese Army. Its call sign was the Daring Division (敢兵団, Kan Heidan). It was formed on 12 July 1944 in Taipei city on Taiwan island. The nucleus for the formation was the casualties and local recruits. Also, the 249th infantry regiment was formed primarily from Takasago men.