sentences:  Its forces were involved in the clash with the Chinese in the Marco Polo Bridge Incident that triggered the Second Sino-Japanese War.The China Garrison Army was reinforced in July 1937 with the IJA 20th Division from Korea and two Independent combined brigades from the Kwantung Army in Manchukuo, and subsequently with an additional three infantry divisions (the IJA 5th Division, IJA 6th Division and IJA 10th Division) from the Japanese home islands for the Battle of Beiping-Tianjin and Operation Chahar.The China Garrison Army was abolished on 26 August 1937 and its forces redistributed between the Japanese First Army, Japanese Second Army and Japanese Northern China Area Army.