In its battle against Imperial Japan, the KMT suffered great losses due to internal corruption, incompetence in military command, outdated military supplies and logistics, and the general strength of the Japanese military. As a strong advocate of the United Front, Wang was damaged as well by the KMT's failure in the battlefield as the KMT forces bore the brunt of the fighting; under Mao's urging the Communists rarely engaged the Japanese army in significant battles. After the KMT lost the battles of Xuzhou and Wuhan, in 1938, Wang suffered a heavy blow as the Yangtze Division was abolished and he himself was dismissed back to Yanan. Yanan was divided into the Southern China and Central Plain Divisions, led by Zhou Enlai and Liu Shaoqi respectively; this was part of Mao's plot to break up the alliance of Wang and Zhou, and to promote his associate Liu. Wang was called back to Yanan to await his fate.