Premise: After the Empire of Japan invaded and occupied the Northeast in 1931, the Chinese Communist Party organized small anti-Japanese guerrilla units, and formed their own Northeastern People's Revolutionary Army, dedicated to social revolution, but these were dwarfed by the Anti-Japanese Volunteer Armies which had been raised by their anti-Japanese, patriotic appeal.
Hypothesis: After the Empire of Japan invaded and occupied the Northeast in 1931, the Japanese Communist Party organized small anti-Japanese guerrilla units