Emperors were the symbolic and administrative pivot of the Chinese empire ever since its establishment in 221 bce. They were arguably the most powerful human beings on earth. Their nominal authority was limitless, and it encompassed the administrative, military, economic, social, religious, and intellectual spheres to mention only a few. Moreover, the emperors’ semi-sacral status added superhuman dimensions to the imperial position. And yet, only very few emperors were able to impose their will in full. The combination of limitless institutional authority and limited personal power is the major paradox of China’s emperorship. The contradiction between the emperor’s nominal omnipotence and his limited ability to impose his personal will on his subjects was imbued into the imperial institution from its very inception. Chinese thinkers of pre-imperial age (pre-221 bce) sought peace and stability in their realm and came to the conclusion that these are attainable only under the omnipotent universal sovereign. Yet being aware of the dangers of the ruler’s potential mediocrity, these thinkers tried to create a system in which the ruler reigns but not rules, and the effective power rests with the ministers of proven intellectual and moral abilities. Although the system they envisioned never worked perfectly and allowed periodic recurrences of the emperors’ abuse of power, overall their goal was achieved. The imperial literati were more often than not able to moderate the emperor’s whims and create a viable mode of rule in which the hereditary monarchy at the top was maintained by the meritocratic bureaucracy below. Despite persistent tensions, the system was flexible enough to ensure the empire’s exceptional political durability.
Warfare and the military were at the center of the imperial Chinese state, though their significance was downplayed by government officials and the literati. Chinese dynasties fielded armies organized and supported by the central government that combined infantry and cavalry forces, and mixed part-time (militia) and professional soldiers. Cavalry and infantry forces were strongly, though not exclusively, connected to ethnic background. The best and most numerous cavalry came from steppe groups, and the best and most numerous infantry were Chinese. The stirrup and guns were invented in China, changing the course of both Chinese and world military history. China also had a highly developed tradition of military thought that drew upon a classical tradition and was vastly elaborated and expanded upon during the imperial period. What most distinguished imperial China from its earlier period was the effective use of war to create and support a unified state. Overall, the history of warfare and the military in imperial China was one of technological and intellectual sophistication in support of state power.