page_title: Central Plains War
section_title: Reunification of China (1928)
hierarchical_section_title: Central Plains War / Background / Reunification of China (1928)
caption_attribution_description: 中文: 国军编遣委员会大会闭幕摄影，中华民国十八年一月二十五日于国民政府煦园。前排右起：宋子文、朱培徳、何应钦、孙科、李济深、阎锡山、蒋介石、胡汉民、蔡元培、冯玉祥、戴季陶、李宗仁、王树常，中排右二为陈仪、右四为薛笃弼、右六为陈调元、右八为赵戴文、右十为陈布雷、右十二为张群，三排右起：白崇禧、古应芬、孔祥熙、贺耀组、×××、朱绶光、贺国光。
context_page_description: The Central Plains War was a series of military campaigns in 1929 and 1930 that constituted a Chinese civil war between the Nationalist Kuomintang government in Nanjing led by Generalissimo Chiang Kai-shek and several regional military commanders and warlords that were former allies of Chiang.
  After the Northern Expedition ended in 1928, Yan Xishan, Feng Yuxiang, Li Zongren and Zhang Fakui broke off relations with Chiang shortly after a demilitarization conference in 1929, and together they formed an anti-Chiang coalition to openly challenge the legitimacy of the Nanjing government. The war was the largest conflict in the Warlord Era, fought across Henan, Shandong, Anhui and other areas of the Central Plains in China, involving 300,000 soldiers from Nanjing and 700,000 soldiers from the coalition.
context_section_description: The Northern Expedition ended with the reunification of China in 1928 under the Nanjing government, as Zhang Xueliang declared the allegiance of his Northeast Army to the Nationalist government in Nanjing, following the assassination of his father Zhang Zuolin by the Japanese Kwantung Army. While Chiang emerged as the paramount leader of the Republic of China, the reunification soon ran into issues as different factions in the Kuomintang disagreed over demilitarization at a military conference in 1929. The National Revolutionary Army was reorganized into four army groups after the Northern Expedition, incorporating armies from regional warlords. The First Army Group was formed by the Whampoa clique, alternatively known as the Central Army, which were directly led by Chiang himself. The Second Army Group consisted of elements from Guominjun led by Feng Yuxiang. The Third Army Group was led by Yan Xishan of the Shanxi clique, while the Fourth Army Group were led by Li Zongren of the New Guangxi clique.
caption: NRA Commission Committee meeting
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