And Moses sent them out to war, a thousand from every tribe, and with them Phinehas, the son of Eleazar the priest, taking in his hands the vessels of the holy place and the horns for sounding the note of war.

At the sound of a second loud note, the tents on the south side are to go forward: the loud note will be the sign to go forward.

When a loud note is sounded, the tents placed on the east side are to go forward.

And if you go to war in your land against any who do you wrong, then let the loud note of the horn be sounded; and the Lord your God will keep you in mind and give you salvation from those who are against you.