The Roman barracks at Umm el Jimal are among the best-preserved military structures of their kind surviving in Jordan. Built in the early 4th century CE, the barracks comprise long ranges of rooms arranged around a central courtyard, with stabling for cavalry horses and a commanding officer's quarters at one end. The basalt construction has survived remarkably intact — in many places the walls stand to near roof height, giving a clear sense of the building's original scale.
The barracks reflect the site's importance as a military post on the eastern frontier of the Roman province of Arabia. It sat on the edge of the basalt desert where nomadic groups moved between the agricultural lands of the Hauran and the deeper steppe. The garrison here was tasked with monitoring that frontier, protecting caravans, and projecting Roman authority into the Hauran plateau.