Guangdong province has a good revolutionary foundation and a good mass foundation. It is far from the ruling center of Beiyang warlords, and there are also some forces loyal to the revolution. Sun Yat-sen ordered Chiang Kai-shek to form the first army loyal to himself-the Guangdong Army. Since then, Sun Yat-sen began to form the Guangzhou National Government, reorganized the Kuomintang, and formed the National Revolutionary Army on the basis of the Second Army of Guangdong Army under Chiang Kai-shek and the Student Army of Huangpu Military Academy.

1925 China Guangdong Revolutionary Army twice conquered Chen Jiongming, a warlord entrenched in eastern Guangdong. Since the winter of 1922, Chen Jiongming has been fighting the revolutionary government led by Sun Yat-sen in Guangzhou. /kloc-in the winter of 0/924, Sun Yat-sen took the opportunity to go north and prepared to attack Guangzhou. 1in February, 925, the Guangdong revolutionary government decided to carry out a crusade, with the student army of Huangpu Military Academy and the Guangdong Army as the right-wing army, led by Chiang Kai-shek, president of the military academy and chief of staff of the Guangdong Army, and Zhou Enlai, director of the political department, as the main force of the crusade; The Yang Ximin Department of Yunnan Army is the Left Army, and the Liu Zhenhuan Department of Gui Jun is the Middle Army. But Yang and Liu still colluded with Chen Jiongming. The Huangpu Student Army fought bravely with the Guangdong Army, winning Lien Chan and defeating the main force of the Chen Jiongming Army. In June, Liu Zhenhuan launched an armed uprising in Guangzhou with the support of British imperialism and warlords Duan and Tang. The Huangpu Student Army and the Guangdong Army immediately returned to Li to quell the rebellion and wiped out more than 20,000 rebels.

Later, the Guangdong Revolutionary Government was reorganized from the Grand Marshal's Office to the National Government, and the troops trained by Huangpu Military Academy, as well as the Guangdong Army, the Hunan Army and the Yunnan Army, were the first to fifth armies of the National Revolutionary Army. At this time, Chen Jiongming reoccupied Dongjiang with 30,000 people in an attempt to make a comeback. The National Government decided to carry out the second crusade with the newly formed National Revolutionary Army, with Chiang Kai-shek as the commander-in-chief, the general director of the Political Department and the representative of the First Army, and He, Li and Cheng Qian as the heads of columns. The Eastern Expedition Army started from June+10/October 1 in 65438. After fierce fighting, Huizhou was captured in one fell swoop. The three columns continued to advance separately. At the beginning of October, 165438+ recovered Chaoan and Shantou, and all the main forces of Dongjiang Chen Jiongming Army were annihilated. At the same time, the National Government successively recovered northern Guangdong, southern Guangdong and Hainan Island.

The National Revolutionary Army's two victories in the Eastern Expedition unified the whole territory of Guangdong and established a solid rear foundation for the later Northern Expedition.