What does 2 Samuel 10:14 mean?

When the Ammonites saw the Arameans running, they also ran away from Abishai and retreated into their city. So Joab stopped fighting the Ammonites and went back to Jerusalem. 2 Samuel 10:14 - Modern Text Bible

(With their allies gone, the Ammonites lose their nerve and retreat. Joab doesn’t pursue them further.)