Adam Clarke on 2 Kings 14:28

How he warred, and - recovered Damascus - We learn from 1Chr 18:3-11, that David had conquered all Syria, and put garrisons in Damascus and other places, and laid all the Syrians under tribute; but this yoke they had not only shaken off, but they had conquered a considerable portion of the Israelitish territory, and added it to Syria. These latter Jeroboam now recovered; and thus the places which anciently belonged to Judah by David's conquests, and were repossessed by Syria, he now conquered, and added to Israel.