2 Samuel 18:16
At this, Joab sounded his battle trumpet and his troops stopped pursuing the other Israelis.
2 Samuel 2:28
So Joab sounded his battle trumpet, his entire army stopped pursuing Israel any longer, and they quit fighting.
2 Samuel 20:22
So the woman replied, "Watch this! His head will be thrown to you over the city wall." Then the woman wisely went back to her people. They cut off the head of Bichri's son Sheba and threw it out to Joab, so Joab sounded his battle trumpet and they withdrew from the city. Everybody went back home and Joab returned to the king at Jerusalem.
Numbers 10:2-10
"Make two trumpets, crafting them from beaten silver, for use in calling the congregation together and for notifying the camps to set out for travel.
1 Corinthians 14:8
For example, if a bugle doesn't sound a clear call, who will get ready for battle?