Bible Verses About Trumpet: Sounding for a memorial when the people went into battle

And if ye go to war in your land against the enemy that oppresseth you, then ye shall blow an alarm with the trumpets; and ye shall be remembered before the LORD your God, and ye shall be saved from your enemies.

And Moses sent them to the war, a thousand of every tribe, them and Phinehas the son of Eleazar the priest, to the war, with the holy instruments, and the trumpets to blow in his hand.

¶ And they warred against the Midianites, as the LORD commanded Moses; and they slew all the males.