1 Chronicles 18:1-4

Now after this it came about that David defeated the Philistines and subdued them and took Gath and its towns from the hand of the Philistines. He defeated Moab, and the Moabites became servants to David, bringing tribute. David also defeated Hadadezer king of Zobah as far as Hamath, as he went to establish his rule to the Euphrates River. David took from him 1,000 chariots and 7,000 horsemen and 20,000 foot soldiers, and David hamstrung all the chariot horses, but reserved enough of them for 100 chariots.