Deuteronomy 20:5-10

The officers shall say to the army: “Has anyone built a new house and not yet begun to live in it? Let him go home, or he may die in battle and someone else may begin to live in it. Has anyone planted a vineyard and not begun to enjoy it? Let him go home, or he may die in battle and someone else enjoy it. Has anyone become pledged to a woman and not married her? Let him go home, or he may die in battle and someone else marry her.” Then the officers shall add, “Is anyone afraid or fainthearted? Let him go home so that his fellow soldiers will not become disheartened too.” When the officers have finished speaking to the army, they shall appoint commanders over it. When you march up to attack a city, make its people an offer of peace.