Deuteronomy 20:10

10 `When thou drawest near unto a city to fight against it, then thou hast called unto it for Peace,

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 `And the authorities have added to speak unto the people, and said, Who [is] the man that is afraid and tender of heart? -- let him go and turn back to his house, and the heart of his brethren doth not melt like his heart;
9 and it hath come to pass as the authorities finish to speak unto the people, that they have appointed princes of the hosts at the head of the people.
10 `When thou drawest near unto a city to fight against it, then thou hast called unto it for Peace,
11 and it hath been, if Peace it answer thee, and hath opened to thee, then it hath come to pass -- all the people who are found in it are to thee for tributaries, and have served thee.
12 `And if it doth not make peace with thee, and hath made with thee war, then thou hast laid siege against it,
Young's Literal Translation is in the public domain.