The Yangtze River Crossing campaign was a military campaign launched by the People's Liberation Army to cross the Yangtze River and capture Nanjing, the capital of the Nationalist government of the Kuomintang, in the final stage of the Chinese Civil War. The campaign began at night on 20 April, and lasted until 2 June 1949, concluding after the fall of Nanjing and Shanghai to the Communist forces, which eventually resulted in the exile of the Nationalists to the island of Taiwan.

The retreat of the government of Republic of China to Taiwan, also known as the Kuomintang's retreat to Taiwan or the Great Retreat in Taiwan, refers to the exodus of the remnants of the then-internationally-recognized Kuomintang-ruled government of the Republic of China (ROC) to the island of Taiwan (Formosa) on December 7, 1949, after losing the Chinese Civil War in the Chinese mainland. The Kuomintang, its officers, and approximately 2 million ROC troops took part in the retreat, in addition to many civilians and refugees, fleeing the advance of the People's Liberation Army of the Chinese Communist Party (CCP). The CCP, who now effectively controlled most of Mainland China, spent the subsequent years purging any remnant Nationalist agents and bandits in western and southern China, solidifying the rule of the newly established People's Republic of China.