Anti-Japanese resistance volunteers in China
The Anti-Japanese resistance volunteers in China refer to the volunteer armies formed during the Japanese invasion of Manchuria, and until 1933 waged war against Japanese and Manchukuo forces over much of Northeast China. Kim Song-ju (Kim Il-sung) was significant in the unified organization's declaration, and Yang Jingyu served as a major commander.
Source: Wikipedia — Anti-Japanese resistance volunteers in China (CC BY-SA 4.0)