Deuteronomy 20:8-11

“Then the officers will also say, ‘Is anyone here afraid or worried? If you are, you may go home before you frighten anyone else.’ When the officers have finished speaking to their troops, they will appoint the unit commanders. “As you approach a town to attack it, you must first offer its people terms for peace. If they accept your terms and open the gates to you, then all the people inside will serve you in forced labor.