Why did Sichuan become divided among warlords in the early Chinese republic?

During the early years of the Chinese republic (1911–1930), Sichuan suffered significantly under a feudal warlord system, at one point being divided among as many as 17 independent military units. This fragmentation was driven by several key factors:1

• Geographic Isolation: Sichuan’s rugged terrain, inaccessibility, and vast size made it difficult for any central authority to project power or maintain control, naturally encouraging political separatism.1
• Need for Territorial Bases: In the broader context of Chinese militarism, rival military factions required secure territorial bases to tax the local population and recruit soldiers. Because Sichuan was economically self-sufficient, it provided an attractive, defensible base for competing commanders.231
• Lack of Centralized Authority: Following the collapse of the Qing dynasty and the death of Yuan Shikai, no single authority in China was strong enough to subordinate regional rivals. This power vacuum allowed local military leaders to operate with autonomy, constantly shifting alliances and engaging in conflicts over territory and resources.423

Sichuan remained fractured until it was finally unified under the Nationalist government in 1935.1