'Signal' in the Bible

But when summoning the assembly, you will blow, but you will not signal with a loud noise.

If you go [to] war in your land against the enemy who attacks you, you will signal with a loud noise on the trumpets. You will be remembered {before} Yahweh your God, and you will be rescued from your enemies.

Moses sent 1,000 from each tribe to war. They went with Phinehas son of Eleazar the priest, in whose care were the holy objects and signal trumpets.