What does 2 Samuel 8:9 mean?

Then David put garrisons in Syria of Damascus; and the Syrians became servants to David, and brought tribute. Yahweh gave victory to David wherever he went.

David took the shields of gold that were on the servants of Hadadezer, and brought them to Jerusalem.

From Betah and from Berothai, cities of Hadadezer, king David took a great quantity of brass.

then Toi sent Joram his son to king David, to greet him, and to bless him, because he had fought against Hadadezer and struck him; for Hadadezer had wars with Toi. Joram brought with him vessels of silver, vessels of gold, and vessels of brass:

King David also dedicated these to Yahweh, with the silver and gold that he dedicated of all the nations which he subdued;

of Syria, of Moab, of the children of Ammon, of the Philistines, of Amalek, and of the plunder of Hadadezer, son of Rehob, king of Zobah.