The Chinese Civil War was fought between the Kuomintang-led government of the Republic of China and the forces of the Chinese Communist Party (CCP), with armed conflict continuing intermittently from 1 August 1927 until 7 December 1949, resulting in a CCP victory and control of mainland China in the Chinese Communist Revolution.

The Chinese Communist Party (CCP), officially the Communist Party of China (CPC), is the founding and sole ruling party of the People's Republic of China (PRC). Under the leadership of Mao Zedong, the CCP emerged victorious in the Chinese Civil War against the Kuomintang. In 1949, Mao proclaimed the establishment of the People's Republic of China. Since then, the CCP has governed China and has had sole control over the People's Liberation Army (PLA). Successive leaders of the CCP have added their own theories to the party's constitution, which outlines the party's ideology, collectively referred to as socialism with Chinese characteristics. As of 2023, the CCP has more than 98 million members, making it the second largest political party by membership in the world after India's Bharatiya Janata Party.