How did guerrilla warfare help Chinese communist forces during the war against Japan?

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During the war against Japan, Chinese communist forces utilized guerrilla warfare to expand their influence and military strength by operating in the vast rural areas behind Japanese lines. Because the Japanese military lacked the manpower to control territory outside of major cities and railway lines, communist forces were able to move into these regions to establish effective grassroots political control.123

The strategy proved highly effective for several reasons:

  • Strategic Positioning: Communist troops sent small columns into overrun areas to incorporate remnant forces and establish sanctuaries for guerrilla units that attacked small Japanese garrisons.1
  • Mobilization: By organizing the rural population, the CCP secured essential support, including food, new recruits, and intelligence.13
  • Expansion: Through these methods, the Eighth Route Army and the New Fourth Army grew significantly, with the former expanding from roughly 100,000 troops in 1937 to 600,000 by 1945.14
  • Political Consolidation: Beyond military gains, these tactics allowed the communists to implement agrarian policies and indoctrination, securing broad support among the peasantry and establishing governance over a population estimated at up to 90 million.32