2 Samuel 18:16
18:16 Then Joab blew the trumpet and the army turned back from chasing Israel, for Joab had called for the army to halt.
2 Samuel 20:1
Sheba’s Rebellion
20:1 Now a wicked man named Sheba son of Bicri, a Benjaminite, happened to be there. He blew the trumpet and said,
“We have no share in David;
we have no inheritance in this son of Jesse!
Every man go home, O Israel!”