Ma Zhanshan
Even before the war began, the Chinese Muslim General Ma Zhanshan was fighting and severely mauling the Japanese army in Manchuria. The Japanese officer Doihara Kenji approached him in an attempt to persuade him to defect. He pretended to defect to the Japanese, then used the money they gave him to rebuild his army and fought them again, leading a guerrilla campaign in Suiyuan. The Japanese themselves noted that Chiang Kai-shek relied upon Muslim generals like Ma Zhanshan and Bai Chongxi during the war.