Ma Zhanshan was a Chinese general famous for resisting the Japanese invasion of Manchuria. Ma was placed in charge of the Northeastern Army in Heilongjiang Province during the invasion and ignored orders from the central government not to resist the Japanese. He became a national hero in China by fighting the unsuccessful but highly symbolic Jiangqiao campaign against the Kwantung Army's advance into Heilongjiang. After his defeat, he feigned defection to the Japanese and was appointed Minister of War in the new Japanese puppet state of Manchukuo. He then joined and took command of the guerrilla campaign against Japanese occupation, taking with him large amounts of supplies, funds, and military intelligence. Ma Zhanshan rejoined the Northeastern Army after the guerilla movement was largely defeated. He continued to oppose Chiang Kai-shek's policy of non-resistance and supported the Xi'an Incident that forced Chiang to form the Second United Front with the Chinese Communist Party (CCP). He commanded several units in the National Revolutionary Army during the Second Sino-Japanese War while covertly cooperating with the CCP. Ma avoided direct participation in the postwar Chinese Civil War and eventually defected to the Communists, dying a year later in 1950.

The Empire of Japan's Kwantung Army invaded the Manchuria region of the Republic of China on 18 September 1931, immediately following the Mukden incident. At the war's end in February 1932, the Japanese established the puppet state of Manchukuo. Their occupation lasted until the success of the Soviet Union and Mongolia with the Manchurian Strategic Offensive Operation in mid-August 1945, towards the end of the Second World War.