战后日本所编的战史,大本营和陆军省的机密文件、日志和颁发的命令,以及当时日本的主要决策者、高级指挥官的回忆和笔记,其立场、观点虽然站在敌对方面,但对中共抗战的记载颇具真实性和客观性。日军很早便将“讨伐重点”指向中共军队,但始终未能奏效,这主要归因于中共军队游击战的巧妙。战争初期,日军便承认:“共军的游击战术巧妙,其势力与日俱增, Postwar Japan’s history of war, base camps and the Army’s confidential documents, diaries and orders issued, as well as Japan’s major policy makers, senior commanders memories and notes, although its position, point of view while standing on the hostile side, The record of the CPC’s war of resistance is quite authentic and objectivity. The Japanese Army pointed out ”key points of attack“ to the CCP army very early on, but it failed to do so because of the cleverness of the Chinese communist army’s guerrilla warfare. In the early days of the war, the Japanese military admitted: ”The guerrilla tactics of the communists are clever and their forces are increasing day by day.