John Gill Commentary 2 Kings 8:28

"And he went with Joram the son of Ahab to war against Hazael king of Syria at Ramoth-gilead: and the Syrians wounded Joram." — 2 Kings 8:28 (ASV)

And he went with Joram the son of Ahab
His mother's brother, and so his uncle:

to the war against Hazael king of Syria in Ramothgilead ;
which he went to recover out of the hands of the king of Syria, as his father Ahab had attempted in his time; in which he was assisted by Jehoshaphat, as now Joram was by a grandson of his:

and the Syrians wounded Joram ;
as they did his father Ahab at the same place, though his wound was not mortal, as his father's was.