Order of battle for the Hainan Island Operation

Hainan Island Operation (10 February 1939)

Japan
Hainan Conquest Forces - Vice Admiral Kondo Nobutake
 * Myoko (5th Fleet flagship) - Vice Admiral Kondo Nobutake
 * Nagara
 * Natori
 * 23rd Destroyer Group
 * Mochizuki, Mutsuki, Mikazuki, Kikuzuki
 * 45th Destroyer Group
 * Matsukaze, Asakaze
 * 28th Destroyer Group
 * Yūnagi, Asanagi
 * 12th Minesweeper Group
 * 1st Air Sentai
 * Akagi, Chiyoda
 * 1st Air Unit
 * 14th Kōkūtai
 * 16th Kōkūtai
 * 4th Base Force
 * Yokosuka 4th SNLF
 * Kure 6th SNLF
 * Sasebo 8th SNLF
 * 5th Garrison Unit
 * Taiwan Mixed Brigade - (Major Gen. Iida)
 * Taiwan 1st Infantry Regiment
 * Taiwan 2nd Infantry Regiment
 * Taiwan Mountain Gun Regiment

China
Wang Yi in overall command of defense of Hainan
 * 5th Security Brigade - Wang Yi
 * 2 Security Regiments - About 1,600 men
 * 7 Guard Battalions (Newly formed from residents) - 1,750 men
 * Communist Independent Battalion - 300 men
 * Xiuying Battery Garrisons (Still undergoing organization) - 250 men