发展抗日武装,进行广泛的敌后游击战,建立根据地,是抗日战争时期我党领导的抗日游击战争的主要内涵。华北地区(山西、河北、山东、察哈尔、绥远、热河)的抗日游击战争,开始于1937年9、10月间。我八路军实施战略展开后,以主力部队分散深入农村,发动群众,扩大武装,并依托山区向平原逐次推进,在华北各地大规模地建立根据地。华中地区(长江 The development of the anti-Japanese armed forces and extensive base-guerrilla warfare and establishment of base areas are the main contents of the anti-Japanese guerrilla war led by our party during the anti-Japanese war. The anti-Japanese guerrilla warfare in North China (Shanxi, Hebei, Shandong, Chahar, Suiyuan and Rehe) began in September and October 1937. After the implementation of the strategy of the Eighth Route Army started, the main forces dispersed throughout the rural areas, mobilized the masses, expanded their armed forces, and relied on mountainous areas to advance to the plain one after another to establish large-scale base areas throughout North China. Central China (Yangtze River