The Japanese garrison during World War II was composed of 2,769 IJA men of the 11th Independent Mixed Regiment under the command of Colonel Tatsuo Yasui and 243 IJN men.
During World War II the Japanese garrison on the Mortlock Islands, under the command of Colonel Masatake Tobita, consisted of 753 IJA men including a company of six medium tanks and 257 IJN men including air base crew.
During World War II the Japanese garrison was composed of 21,449 IJA men under the command of Lieutenant-General Sadae Inoue and 8,286 IJN men under the command of Vice-Admiral Kenmi Itoh.
However, the western region of Manchukuo was garrisoned by the newly formed IJA 23d Infantry Division at Hailar, under General MichitarÅ Komatsubara and included several Manchukuoan army and border guard units.
The Cavalry Group of the Imperial Japanese Army (IJA) was formed on April 21, 1933, consisting of the IJA 1st Cavalry Brigade and IJA 4th Cavalry Brigade.
At the end of March, Sendai covered the landing of one battalion of the IJA's 18th Infantry Division at Port Blair, Andaman Islands.
In early 1940, troops of the Imperial Japanese Army (IJA) moved to seize Longzhou in south Guangxi, where the eastern branch of the railroad from Hanoi reaches the border, and also tried to move west to cut the rail line to Kunming.