马占山
The units under Ma undertook ambushes along the major roads and badly weakened Manchukuo and Japanese troops in several engagements. In the “Ma Chan-shan Subjugation Operation”, the Kwantung Army transferred a large mixed force of Japanese and Manchukuo troops to encircle and destroy Ma's Army. Ma Zhanshan's troops, though seriously depleted from previous battles, escaped due to the laxity of the Manchukuo troops. In September, Ma Zhanshan arrived in Longmen County and established a relationship with the Heilungkiang National Salvation Army of Su Bingwen. In the “Su Ping-wei Subjugation Operation”, 30,000 Japanese and Manchukuo troops forced Ma Zhanshan and Su Bingwen to retreat across the border into the Soviet Union in December. Most of these troops were then transferred to Rehe.