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48th Division
Active	30 November 1940 – 15 August 1945
Disbanded	15 August 1945
Country	Japan
Branch	Imperial Japanese Army
Type	Infantry
Size	25,000
Garrison/HQ	Taiwan
Engagements	World War II
Commanders
Notable commanders	Yuichi Tsuchihashi

The 48th Division (第48師団, Dai-yonjūhachi Shidan) was an infantry division of the Imperial Japanese Army. Its call sign was the Sea Division (海兵団, Umi Heidan).

The IJA 22nd Army was a short-lived component of the Southern China Area Army from February to November 1940 during the Second Sino-Japanese War. A component of the IJA 22nd Army was the Taiwan Mixed Brigade (台湾混成旅団), which was involved in combat operations in Guangdong Province. After the dissolution of the IJA 22nd Army on 30 November 1940 it was elevated to division status under the IJA 23rd Army and in August 1941 was transferred to Taihoku in Taiwan.

The division was composed of the 27th Independent Mixed Brigade (Taiwan Mixed Brigade) and the 47th Infantry Regiment, which became available when the IJA 6th Division transitioned from a rectangular to a triangular division. The 48th Division was initially part of the Taiwan Army, before being reassigned to the IJA 14th Army on 12 August 1941. In preparation for the Pacific War, the division was mechanized (along with the IJA 5th Division), which was completed 6 November 1941.

Under the command of Lieutenant General Yuitsu Tsuchihashi, the IJA 48th Division was among the first Japanese forces to land in the Philippines as part of the IJA 14th Army, and captured Manila, but did not participate in the Battle of Bataan. Instead, in January 1942 the division was transferred to the control of the IJA 16th Army in eastern Java, where it was assigned the capture of Surabaya and its strategic oil fields on 7 March 1942.

Afterwards, the IJA 48th Division was assigned to garrison of the island of Timor as part of the IJA 19th Army. Although the island had been captured by Japan in the Battle of Timor, much of the island was still in the hands of Australian and Dutch commandos. Tsuchihashi launched a major counter-offensive in an attempt to push the Australians into a corner on the south coast of the island. The Japanese also recruited significant numbers of Timorese civilians, who provided intelligence on Allied movements. The island was secured when the remaining Australian commandos were evacuated in December 1942.

The IJA 19th Army was abolished on 28 February 1945, and the division became subordinate to the IJA 16th Army.

The IJA 48th Division remained as a garrison force on Timor until the surrender of Japan.

See also

• List of Japanese Infantry Divisions

Reference and further reading

1. Yenne, Bill (2014). The Imperial Japanese Army: The Invincible Years 1941–42. Osprey Publishing. ISBN 1782009329.
2. Rottman, George (2002). World War II Pacific Island Guide: A Geo-Military Study. Westport: Greenwood Press. ISBN 0-313-31395-4.
3. White, Ken (2002). Criado: A Story of East Timor. Briar Hill: Indra Publishing. p. 92. ISBN 0-9578735-4-9.
4. Dennis, Peter; et al. (2008). The Oxford Companion to Australian Military History (Second ed.). Melbourne: Oxford University Press Australia & New Zealand. ISBN 978-0-19-551784-2.

• Madej, W. Victor. Japanese Armed Forces Order of Battle, 1937-1945 Allentown, PA: 1981

• Japanese World War II divisions
• Infantry divisions of Japan
• Military units and formations established in 1940
• Military units and formations disestablished in 1945
• 1940 establishments in Japan
• 1945 disestablishments in Japan