Deuteronomy 20:10

10 When you approach a city to attack it, offer its people a peaceful way to surrender.

Deuteronomy 20:10 Meaning and Commentary

Deuteronomy 20:10

When thou comest nigh unto a city to fight against it
This is to be understood of an arbitrary war, as Jarchi observes; which they engaged in of themselves, or were provoked to by their enemies; which was their own choice, and according to their own will and pleasure; and their conduct towards their enemies in it was different from that in a war with the seven nations, commanded by the Lord, and distinguished from it, ( Deuteronomy 20:15 Deuteronomy 20:16 ) .

then proclaim peace unto it;
that is, offer them terms of peace; which were, that the inhabitants of it should renounce idolatry, and become their tributaries and servants.

Deuteronomy 20:10 In-Context

8 The officers should also tell the troops, "If you are afraid or have lost your courage, you may go home. Then you won't ruin the morale of the other Israelites."

9 When the officers finish speaking to the troops, they should appoint commanders to lead them.

10 When you approach a city to attack it, offer its people a peaceful way to surrender.

11 If they accept it and open [their gates] to you, then all the people there will be made to do forced labor and serve you.

12 If they won't accept your offer of peace but declare war on you, set up a blockade around the city.