1 Chronicles 19:7-9

New King James Version

⁷ So they hired for themselves thirty-two thousand chariots, with the king of Maacah and his people, who came and encamped before Medeba. Also the people of Ammon gathered together from their cities, and came to battle.

⁸ Now when David heard of it, he sent Joab and all the army of the mighty men. ⁹ Then the people of Ammon came out and put themselves in battle array before the gate of the city, and the kings who had come were by themselves in the field.