The armed forces
The command of the armed forces was also arranged so as to avoid giving excessive powers to a single individual. Officers equivalent to generals were usually appointed in pairs, and, in times of emergency or when a campaign was being planned with a defined objective, those officers were appointed for a specific task; when their mission was fulfilled, their commands were brought to a close. Beneath that level was a complement of colonels whose duties consisted of smaller-scale activities. In addition, the governors and commandants of the commanderies were sometimes ordered to lead forces. The commandants were also responsible for training conscript soldiers and setting them to maintain internal discipline and to man the static lines of defense in the north and northwest.
Horse and Swallow, bronze sculpture from the tomb of General Chang, Leitai, Wuwei county, Gansu province, 2nd century ad, Eastern Han dynasty; in the Gansu Provincial Museum, Lanzhou, China. Height 32.4 cm.Robert Harding Picture Library
The Han armies drew their recruits from conscripts, volunteers, and convicts. Conscripts, who formed the majority, were obliged to serve for two years, either under training or on active service. This duty devolved on all able-bodied males other than those who had acquired privileges of rank or those who could pay for substitutes. The latter practice was probably rare. In addition, men were liable for recall to the armed forces in times of emergency. Volunteers were the sons of privileged families and probably served as cavalrymen, and convicts were sometimes drafted to work out their terms of sentence in the army. There is ample evidence to show that Han commanders used to draw on Central Asian tribesmen as recruits, and the tribesmen were particularly valuable as skilled cavalrymen. A number of foreigners also served with distinction as officers. While little is known of the organization of armies on campaign, garrison forces were divided into separate commands consisting of perhaps four companies. Each company had a strength of some 40 or 50 sections, each of which comprised one officer and up to five men.