So Joab and his troops advanced to fight the Arameans, who fled before him.
Here we have, I. The preparation which the Ammonites made for war, Sa2 10:6. They saw they had made themselves very odious to David and obnoxious to his just displeasure. This they might easily have foreseen when they abused his ambassadors, which was no other than a challenge to war, and a bold defiance of him.
Commenting on 2 Samuel 10:6-14
And Joab drew nigh, and the people that were with him, unto the battle against the Syrians,.... Fell upon them; attacked them first, began the battle with them; rightly judging, that if they, being hired soldiers, were closely pressed, they would give way, which would discourage the Ammonites, who depended much upon them; and the fight, according to Josephus (x), lasted some little time, who...
2Sa 10:13-14 Joab then advanced with his army to battle against Aram, and “they fled before him.” - 2Sa 10:14. When the Ammonites perceived this, they also fled before Abishai, and drew back into the city (Rabbah); whereupon Joab returned to Jerusalem, probably because as we may infer from 2Sa 11:1, it was too late in the year for the siege and capture of Rabbah.
Commenting on 2 Samuel 10:13-14