16 Then Joab sounded the trumpet, and the troops stopped pursuing Israel, for Joab halted them.

Read 2 Samuel 18:16 Using Other Translations

And Joab blew the trumpet, and the people returned from pursuing after Israel: for Joab held back the people.
Then Joab blew the trumpet, and the troops came back from pursuing Israel, for Joab restrained them.
Then Joab blew the ram’s horn, and his men returned from chasing the army of Israel.