Northern Expedition

Northern Expedition
	Part of the Warlord Era
	; Clockwise from top-left: Chiang inspecting soldiers of the National Revolutionary Army; NRA troops marching north; an NRA artillery unit in combat; civilians showing support for the NRA; peasants volunteering to join the expedition; NRA soldiers preparing to launch an attack.
Date	9 July 1926 – 29 December 1928 (2 years and 173 days)
Location	Southern to northern China
Result	Nationalist government victory; ; All Chinese warlords accept Nationalist rule of China; Overthrow of the Beiyang government; End of the Warlord Era; Nanjing–Wuhan split; Beginning of the Chinese Civil War;
Belligerents
Nationalist government United Front (until April 1927) National Revolutionary Army; Kuomintang; Chinese Communist Party (until 1927); Allied warlord armies (Guominjun, Guangxi, Shanxi army, others); ; ; Soviet Union; Comintern	Beiyang government National Pacification Army Fengtian clique; Zhili clique; ; ; Japan
Commanders and leaders
Chiang Kai-shek; Feng Yuxiang; Li Zongren; Bai Chongxi; He Yingqin; Yan Xishan; Zhang Fakui; Li Jishen; Tan Yankai; Cheng Qian; Deng Yanda; Zhou Enlai; Ye Ting; Mikhail Borodin; Vasily Blyukher	Zhang Zuolin X; Zhang Xueliang; Zhang Zongchang ; Yang Yuting; Wu Peifu; Sun Chuanfang; Chu Yupu
Strength
c. 100,000 (July 1926); c. 264,000 (Dec. 1926); c. 700,000 (spring 1927); c. 1,000,000 (1928)	c. 700,000–1,000,000 (1926); c. 190,000–250,000 (Dec. 1928)
	366,000-953,000 deaths (including non-combatants) estimated

The Northern Expedition was a military campaign launched by the National Revolutionary Army (NRA) of the Kuomintang (KMT) against the Beiyang government and other regional warlords in 1926. The purpose of the campaign was to reunify China, which had become fragmented in the aftermath of the 1911 Revolution. The expedition was led by Generalissimo Chiang Kai-shek, and was divided into two phases. The first phase ended in a 1927 political split between two factions of the KMT: the right-leaning Nanjing faction, led by Chiang, and the left-leaning faction in Wuhan, led by Wang Jingwei. The split was partially motivated by Chiang's Shanghai Massacre of Communists within the KMT, which marked the end of the First United Front. In an effort to mend this schism, Chiang Kai-shek stepped down as the commander of the NRA in August 1927, and went into exile in Japan.

The second phase of the expedition began in January 1928, when Chiang resumed command. By April 1928, the nationalist forces had advanced to the Yellow River. With the assistance of allied warlords, including Yan Xishan and Feng Yuxiang, the nationalist forces secured a series of decisive victories against the Beiyang Army. As they approached Beijing, Zhang Zuolin, leader of the Manchuria-based Fengtian clique, was forced to flee and was later assassinated shortly thereafter by the Japanese. His son, Zhang Xueliang, took over as the leader of the Fengtian clique, and in December 1928, announced that Manchuria would accept the authority of the nationalist government in Nanjing. With the final piece of China under KMT control, the Northern Expedition concluded successfully and China was reunified, heralding the start of the Nanjing decade.