The Xi'an Incident was a major Chinese political crisis from 12 to 26 December 1936. Chiang Kai-shek, leader of the Nationalist government of China, was placed under house arrest in the city of Xi'an by a Nationalist army he was there to review. Chiang's captors hoped to end the Chinese Civil War and confront Japanese imperial expansion into Chinese territory. After two weeks of intense negotiations between Chiang, his captors, and representatives of the Chinese Communist Party (CCP), Chiang was released with a verbal promise to end the civil war and put up a firmer resistance to Japan.

Chiang Kai-shek was a Chinese politician, revolutionary, and military leader. He was the head of the Nationalist Kuomintang (KMT) party, General of the National Revolutionary Army, known as Generalissimo, and the leader of the Republic of China (ROC) in mainland China from 1928 until 1949. After being defeated in the Chinese Civil War by the Chinese Communist Party (CCP) in 1949, he led the ROC on the island of Taiwan until his death in 1975.