|Japanese Fifteenth Army|
Japanese troops on border of Burma
|Active||9 November 1941 - 15 August 1945|
|Country||Empire of Japan|
|Branch||Imperial Japanese Army|
|Nickname(s)||Hayashi Shūdan (林集団 Grove )|
The Japanese 15th Army was formed on November 9, 1941 as a component of the Southern Expeditionary Army Group for the specific task of invading the British colony of Burma. To do this the army, then based in Indo-China needed to transit through Thailand. On December 8, 1941 the 33rd and 55th Divisions of the army spearheaded by the Imperial Guard invaded Thailand overland from what is now Cambodia. The invasion was supported by landings on the coast to the south of Bangkok by the armys 143rd Infantry Regiment. Fighting lasted only a few hours before the Thai government ceded access. Under Lieutenant General Shōjirō Iida, the IJA 15th Army invaded the southern Burmese province of Tenasserim. The Fifteenth Army consisted initially of the highly regarded 33rd Infantry Division and the 55th Infantry Division. The latter attacked from northern Thailand, which had signed a treaty of friendship with Japan on December 21, 1941. The 15th Army quickly advanced through southern Burma, defeating the British and Indian Burma Army in several engagements, and capturing the capital of Rangoon by March 7, 1942. The Army was reinforced by troops released by the Fall of Singapore and drove northwards into central Burma, defeating the British Burma Corps and the Chinese forces, ultimately driving the Allies from Burma.
In 1944, the Fifteenth Army became part of the Burma Area Army. Lieutenant General Iida was posted back to Japan and Lieutenant General Renya Mutaguchi took command. He forcefully advocated an offensive against British India. The offensive, Operation U-Go, was launched in March. As a result of poor logistics and Mutaguchi's underestimation of the difficulties, the Fifteenth Army was almost destroyed in the Battle of Imphal and the Battle of Kohima.
Mutaguchi, his Chief of Staff, and several other officers were removed in the aftermath, and Lieutenant General Shihachi Katamura as assigned to command. As the monsoon season ended, the remnants of the Fifteenth Army attempted to forestall an Allied offensive into Burma by withdrawing behind the Irrawaddy River. They were unable to prevent British and Indian troops from securing bridgeheads across the river, and the army was weakened by losses and detachments to other parts of the front. Once Mandalay was captured, the Fifteenth Army could only retreat southwards, badly disorganised.
The remnants of the Fifteenth Army were later absorbed as a subsidiary unit of the 18th Area Army.
List of Commanders
|1||Lieutenant General Shōjirō Iida||5 November 1941||18 March 1943|
|2||Lieutenant General Renya Mutaguchi||18 March 1943||30 August 1944|
|3||Lieutenant General Shihachi Katamura||30 August 1944||15 August 1945|
Chief of staff
|1||Lieutenant General Haruki Isayama||14 November 1941||1 December 1942|
|2||Lieutenant General Eitaro Naka||1 December 1942||18 March 1943|
|3||General Hideyoshi Obata||18 March 1943||26 May 1943|
|4||Lieutenant General Todai Kunomura||26 May 1943||22 September 1944|
|5||Major General Gonpachi Yoshida||22 September 1944||September 1945|
- Latimer, Jon (2004). Burma: The Forgotten War. London: John Murray. ISBN 978-0-7195-6576-2.
- Madej, Victor (1981). Japanese Armed Forces Order of Battle, 1937-1945. Game Publishing Company. ASIN: B000L4CYWW.
- Wendel, Marcus. "Axis History Factbook". Japanese Fifteenth Army. http://www.axishistory.com/index.php?id=6926.
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