The was an infantry division of the Imperial Japanese Army. Its tsūshōgō code name was the . The 18th Division was one of two infantry divisions newly raised by the Imperial Japanese Army immediately after the Russo-Japanese War (1904–1905) as part of the post war expansion of the standing Japanese military. The division received its colors on 13 November 1907. Its original headquarters was in a suburb of the city of Kurume in Fukuoka Prefecture. Action In World War I the division was strengthened by an additional infantry brigade (the IJA 29th Brigade) and, led by Lieutenant General Kamio Mitsuomi, was given an independent command in the Siege of Tsingtao of the German colony of Tsingtao in the Shandong peninsula, China in October 1914, forcing a surrender of German forces after a week-long assault. Notably, an aircraft from divisional air force has become the first airplane ever downed in the air-to-air combat. However, on 1 May 1925, the division was dissolved by Minister of War Ugaki Kazushige as part of a cost-saving measure during the Kato Takaaki administration, together with the 13th, 15th and 17th divisions. The 18th Division was resurrected in September 1937 as a square division as a part of general military build-up following the start of the Second Sino-Japanese War. As part of the IJA 10th Army under the overall command of the Japanese Central China Area Army it was deployed to the Chinese mainland, as an emergency reinforcement force to supplement the Japanese Shanghai Expeditionary Army in China after the Second Shanghai Incident. The Japanese 18th division subsequently participated in the Battle of Nanjing and the subsequent atrocities known as the Nanking Massacre. From September 1938, the division came under the control of the IJA 21st Army, and participated in the Canton Operation and the invasion and occupation of Guangdong Province under the command of Lieutenant General Seiichi Kuno. The division remained in China through the 1939–40 Winter Offensive under the command of Lieutenant General Harukichi Hyakutake. From 6 November 1941 the division came under the command of Lieutenant-General Renya Mutaguchi and was reassigned to the IJA 25th Army (which was under the command of General Yamashita Tomoyuki). It participated in the invasion of Malaya and Singapore. The 124th Infantry Regiment and some other units of the 18th Division took part in the Battle of Borneo from 16 December 1941 on. Following the conquest of Singapore,