Divrey Hayamim Alef 19:7-9

Orthodox Jewish Bible

⁷ So they hired thirty and two elef chariots, and Melech Ma’achah and his troop, who came and encamped before Meidva. And the Bnei Ammon gathered themselves together from their towns, and moved out for milchamah.

⁸ And when Dovid heard of it, he sent Yoav, and kol tzava hagibborim.

⁹ And the Bnei Ammon came out, and drew up for milchamah before the gate of the Ir, and the melachim that were come were by themselves in the sadeh.