2 Samuel 10:8-9

8The Ammonite soldiers marched out from their city. They stood in front of the city's gates and they were ready to fight. The Syrian soldiers from Zobah and Rehob and the soldiers from Tob and Maakah stayed in the fields near the city.

9Joab saw that there were two groups of the enemy's soldiers. They were ready to attack his army from different sides. So he chose some of Israel's best soldiers. Joab himself led them to attack the Syrian soldiers in the fields.