In April 1928 he joined forces with the insurgent army led by Zhu De and Chen Yi, established the Fourth Army of the Workers' and Peasants' Revolutionary Army and served as secretary of the CPC Military Commission and Party representative. At the First Representative Conference of the Hunan-Jiangxi Border Area held in May, he was elected secretary of the Hunan-Jiangxi border area special CPC committee. Later, he served as secretary of the CPC front committee of the Fourth Army. At the Sixth National Congress of the CPC held from June to July of the same year, he was elected member of the CPC Central Committee.
In June 1930 he served as political commissar of the First Army Group of the Red Army and secretary of the CPC front committee. In August he served as general political commissar of the First Front Army of the Red Army and secretary of the CPC front committee. At the Third Plenary Session of the Sixth CPC Central Committee held in September, he was elected alternate member of the Political Bureau of the CPC Central Committee. In 1931 he served as member and acting secretary of the CPC Central Bureau of the Soviet Area, vice-chairman of the Revolutionary Military Commission of the Party Central Committee and director of the General Political Department and chairman of the Provisional Central Government of the Chinese Soviet Republic.
In January 1933 he was elected member of the Political Bureau of the CPC Central Committee and led the Red Army in the Central Soviet Area to crush the First, Second and Third "Encirclement and Suppression" Campaigns launched by the KMT troops. In October 1934 he took part in the Long March. In January 1935 he attended the Zunyi Meeting and established his leadership over the Red Army and the Party Central Committee. After the meeting, he, Zhou Enlai and Wang Jiaxiang formed the Group of Three to take charge of military operations. Afterwards, he vanquished Zhang Guotao's splittism during the Long March, led the Red Army in arriving at northern Shaanxi in October 1935 and created a new situation in the Chinese revolution. In early November of the same year, he served as chairman of the Northwest Revolutionary Military Commission. In December 1936 he served as Chairman of the Revolutionary Military Commission of the Central Committee. At the enlarged meeting of the Political Bureau of the CPC Central Committee held in Luochuan in August 1937, he served as Chairman of the Revolutionary Military Commission of the Central Committee. In 1942 he led the entire Party to conduct the rectification movement in Yan'an.
In March 1943 he served as Chairman of the Political Bureau of the CPC Central Committee. At the First Plenary Session of the Seventh CPC Central Committee held in June 1945, he was elected Chairman of the CPC Central Committee, its Political Bureau and its Secretariat. After the victory in the anti-Japanese war, in August 1945 he was accompanied by Zhou Enlai to go to Chongqing to hold peace negotiations with Chiang Kai-shek to maintain domestic peace.
In the summer of 1946, the full-scale civil war broke out. He led and commanded the great People's Liberation War with other leading comrades of the CPC Central Committee.
At the First Plenary Session of the CPPCC held in September 1949, he was elected Chairman of the Central People's Government of the People's Republic of China and was appointed Chairman of the People's Revolutionary Military Commission of the Central People's Government. On October 1, he proclaimed the founding of the People's Republic of China at Tian'anmen Square in Beijing. Afterwards, he led the entire Party and the people all over the country in the recovery of the national economy, all democratic reforms, the War to Resist U.S. Aggression and Aid Korea and the socialist transformation of agriculture, the handicrafts and the capitalist industry and commerce.
In 1954 he took charge of drafting the first Constitution of the People's Republic of China. At the First NPC held in September of the same year, he was elected President of the People's Republic of China and Chairman of the Military Commission of the CPC Central Committee. From October 1949 to December 1954, he served as Chairman of the First CPPCC National Committee. From December 1954 to 1976, he served as Honorary Chairman of the CPPCC National Committee. In 1956, 1969 and 1973 he was elected Chairman of the Eighth, Ninth and Tenth CPC Central Committees. His major works are included in the Selected Works of Mao Zedong and the Collected Works of Mao Zedong.
(Source: China.org.cn)