Unlike any other province of the Caliphate, Syria was divided by the early Umayyads into several (originally four, later five) sub-provinces or ajnad (singular jund, "army division"), which in their original inception were the areas from which a particular army division drew its pay, provisions and recruits. The province of Damascus, jund Dimashq, was the largest of the ajnad, comprising most of central Syria. Its borders encompassed roughly the former Byzantine provinces of Phoenice Prima, Phoenice Libanensis, and Arabia.
