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How did the Han government organize its armies to limit the power of individual generals?

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Map showing the Han Empire's territory around 100 BCE, shaded in orange, covering much of eastern China and extending westward. The map also marks the boundary of modern China and highlights the Great Wall running along the northern frontier, built for protection against the Huns. Major rivers and the capital, Chang'an (Xi'an), are labeled. — Han dynasty Map showing the extent of the Han empire c. 100 bce.

To prevent individual generals from accumulating excessive power, the Han dynasty implemented several strategic measures within its military and administrative structure:

Paired Appointments: Officers equivalent to generals were typically appointed in pairs rather than as sole commanders.12
Task-Specific Commands: Military leadership was often granted for specific campaigns or defined objectives. Once the mission was fulfilled, the command was formally brought to a close, preventing the long-term consolidation of military authority.12
Hierarchical Oversight: Beneath the level of generals, a complement of colonels managed smaller-scale activities. Additionally, provincial governors and commandants were sometimes ordered to lead forces, further distributing military responsibility.12
Structural Duplication: The broader Han government frequently employed a policy of duplicating functions across various departments to check the growth of power, a principle that extended to the management of state affairs and military oversight.3

These practices were part of a wider effort to maintain a balance of power and ensure that no single official could easily challenge the central authority of the Han dynasty.13