Northern Expedition (1926–8) A military campaign in which
Chiang Kai- shek led his
National Revolutionary Army out of its base in Guangzhou (Canton) in an attempt to unify China, to destroy the power of the many local
warlords, and bring the country under unitary (i.e. his own) control. He set off with a
National Revolutionary Army of around 150,000 men, composed of loyal officers trained at his
Whampoa Military Academy, as well as more loosely organized units under warlords who recognized Chiang's authority. Initially, Chiang was supported also by Communist forces, as well as military and technical assistance from the Soviet Union. The campaign proved a major success, in that by 1927 Shanghai, the Yangatze Valley, and Nanjing (Nanking) had been taken, which enabled Chiang to set up a
National Government at Nanjing. However, this had been achieved through a split with the Chinese
Communist Party (CCP), from whom the
Guomindang had wrested control over Shanghai in a massacre. This fundamentally weakened Chiang, as his need to overcome the CCP deflected from his original intention to take control over the whole of China. Moreover, Chiang's military successes, which had been achieved with an army inflated to around 600,000 soldiers by early 1928, had been achieved with the compliance of many local warlords, many of whom supplied men and material for his campaign. In return, their allegiance to Chiang was often minimal. Despite Chiang's conquest of Beijing, therefore, his actual control over many areas was relatively weak.