#vintenar

Infantry were usually divided into units of 100 under a mounted constable. Each unit was subdivided into five units of 20 under an officer called a vintenar; by the end of the century the millenar (who might be a knight, and possibly of the royal household) looked after bodies of 1,000 men. Towns also raised militias, that of London suffering particularly on the rebel side at the battle of Lewes. Source: The Medieval Knight by Christopher Gravett