section_path: World War II
section_name: World War II
paragraph_text: World War II
  
  Mao's troops arrived at the Yan'an Soviet during October 1935 and settled in Bao'an, until spring 1936. While there, they developed links with local communities, redistributed and farmed the land, offered medical treatment, and began literacy programs. Mao now commanded 15,000 soldiers, boosted by the arrival of He Long 's men from Hunan and the armies of Zhu De and Zhang Guotao returned from Tibet. In February 1936, they established the North West Anti-Japanese Red Army University in Yan'an, through which they trained increasing numbers of new recruits. In January 1937, they began the "anti-Japanese expedition", that sent groups of guerrilla fighters into Japanese-controlled territory to undertake sporadic attacks. In May 1937, a Communist Conference was held in Yan'an to discuss the situation. Western reporters also arrived in the "Border Region" (as the Soviet had been renamed); most notable were Edgar Snow, who used his experiences as a basis for Red Star Over China, and Agnes Smedley, whose accounts brought international attention to Mao's cause.
  
  On the Long March, Mao's wife He Zizhen had been injured by a shrapnel wound to the head. She travelled to Moscow for medical treatment; Mao proceeded to divorce her and marry an actress, Jiang Qing. He Zizhen was reportedly "dispatched to a mental asylum in Moscow to make room" for Qing. Mao moved into a cave-house and spent much of his time reading, tending his garden and theorising. He came to believe that the Red Army alone was unable to defeat the Japanese, and that a Communist-led "government of national defence" should be formed with the KMT and other "bourgeois nationalist" elements to achieve this goal. Although despising Chiang Kai-shek as a "traitor to the nation", on 5 May, he telegrammed the Military Council of the Nanjing National Government proposing a military alliance, a course of action advocated by Stalin. Although Chiang intended to ignore Mao's message and continue the civil war, he was arrested by one of his own generals, Zhang Xueliang, in Xi'an, leading to the Xi'an Incident; Zhang forced Chiang to discuss the issue with the Communists, resulting in the formation of a United Front with concessions on both sides on 25 December 1937.
  
  The Japanese had taken both Shanghai and Nanjing —resulting in the Nanjing Massacre, an atrocity Mao never spoke of all his life—and was pushing the Kuomintang government inland to Chongqing. The Japanese's brutality led to increasing numbers of Chinese joining the fight, and the Red Army grew from 50,000 to 500,000. In August 1938, the Red Army formed the New Fourth Army and the Eighth Route Army, which were nominally under the command of Chiang's National Revolutionary Army. In August 1940, the Red Army initiated the Hundred Regiments Offensive, in which 400,000 troops attacked the Japanese simultaneously in five provinces. It was a military success that resulted in the death of 20,000 Japanese, the disruption of railways and the loss of a coal mine. From his base in Yan'an, Mao authored several texts for his troops, including Philosophy of Revolution, which offered an introduction to the Marxist theory of knowledge; Protracted Warfare, which dealt with guerrilla and mobile military tactics; and On New Democracy, which laid forward ideas for China's future.
  
  In 1944, the U.S. sent a special diplomatic envoy, called the Dixie Mission, to the Chinese Communist Party. The American soldiers who were sent to the mission were favourably impressed. The party seemed less corrupt, more unified, and more vigorous in its resistance to Japan than the Kuomintang. The soldiers confirmed to their superiors that the party was both strong and popular over a broad area. In the end of the mission, the contacts which the U.S. developed with the Chinese Communist Party led to very little. After the end of World War II, the U.S. continued their diplomatic and military assistance to Chiang Kai-shek and his KMT government forces against the People's Liberation Army (PLA) led by Mao Zedong during the civil war and abandoned the idea of a coalition government which would include the CCP. Likewise, the Soviet Union gave support to Mao by occupying north-eastern China, and secretly giving it to the Chinese communists in March 1946.