When the Ammonites saw that the Arameans had fled, they too fled before Joab’s brother Abishai, and they entered the city. So Joab went back to Jerusalem.
Jewish Publication Society of America Version (JPS1917) - 1 Chronicles 19:15 >And when the children of Ammon saw that the Arameans were fled, they likewise fled before Abishai his brother, and entered into the city. Then Joab came to Jerusalem.