109th Division (Imperial Japanese Army)

109th Division (Imperial Japanese Army). The 109th Division was an infantry division of the Imperial Japanese Army formed in 1944 during the final stages of World War II. Its primary combat deployment was in China as part of Operation Ichi-Go before being redeployed for the final defense of the Japanese archipelago. The division was ultimately annihilated during the Battle of Okinawa in 1945.

History

The 109th Division was activated on 10 May 1944 in Sendai as part of a wave of new formations intended to bolster Japanese defenses. Initially assigned to the Japanese Northern China Area Army, the division was quickly transported to the Chinese mainland to participate in the massive Operation Ichi-Go offensive. During this campaign, it operated in regions of Henan and Hunan provinces, engaging National Revolutionary Army forces. In early 1945, as the Pacific War turned decisively against Japan, the division was withdrawn and reassigned to the Thirty-Second Army for the defense of the Ryukyu Islands. It was stationed on Okinawa Island where it was placed under the command of Mitsuru Ushijima. During the Battle of Okinawa, the division’s regiments were deployed in the southern defensive lines, including positions around Shuri Castle and the Mabuni area. It suffered catastrophic casualties in the intense fighting against the United States Tenth Army, led by Simon Bolivar Buckner Jr., and effectively ceased to exist as a coherent unit by the battle's conclusion in June 1945.

Organization

The 109th Division was a triangular division, organized around three core infantry regiments. Its order of battle at the time of the Battle of Okinawa was as follows: * 107th Independent Mixed Brigade (originally part of the division's core, but often operated semi-independently) * 118th Infantry Regiment * 119th Infantry Regiment * 120th Infantry Regiment * 109th Division Artillery Regiment * 109th Division Engineer Regiment * 109th Division Transport Regiment * 109th Division Signals Unit The division also included various support and logistics units. During the Okinawa campaign, its structure was heavily modified, with elements like the 107th Independent Mixed Brigade being detached for specific defensive assignments under the overall command of the Thirty-Second Army.

Commanding officers

The division had only two commanding officers during its brief existence, both of whom were killed in action during the Battle of Okinawa. * **Lieutenant General Tadashi Katō (10 May 1944 – 22 June 1945)**: The division's inaugural commander, he led it through Operation Ichi-Go and its initial deployment to Okinawa. He was killed in the final stages of the battle. * **Major General Takehiko Uza (22 June 1945 – 30 June 1945)**: Assumed command after Katō's death during the chaotic final days of the battle. He was killed shortly thereafter, marking the effective end of the division's command structure.

See also

* List of Japanese Infantry Divisions * Battle of Okinawa order of battle * Thirty-Second Army (Japan) * Operation Ichi-Go * 107th Independent Mixed Brigade (Imperial Japanese Army)

Category:Infantry divisions of Japan