6Then David put garrisons in Aram of Damascus, and the Syrians became servants to David and brought tribute. And the LORD gave victory to David wherever he went.
A military garrison was a means of policing the region and preventing any rebellion. It was a way of enforcing power.
6 Then David put garrisons in Aram of Damascus, and the Syrians became servants to David and brought tribute. And the LORD gave victory to David wherever he went.