The collaborationist Chinese army ( Kit. 偽軍 ) during the Sino-Japanese War existed under various names depending on the puppet regime established by the Japanese.
After the Mukden incident and the occupation of Manchuria, the Japanese began to form the Imperial army of Manchuku , a collaborationist army was also formed in Mengjiang , in the occupied East Hebei its militarized unit.
Since the beginning of the immediate invasion in 1937, the Japanese in each region formed collaborationist units bearing various names, for example, the Auxiliary Army of the Japanese Imperial Army, the Peacekeeping Corps, the Police Garrisons, etc. Later, all collaborationist units were reduced to divisions, corps and army.
The size of the army grew steadily from 78,000 in 1938 to 1,118,000 by 1945 .