Laws of Warfare
1If thou go out to war against thy enemies, and see horsemen and chariots, and the numbers of the enemy's army greater than thine, thou shalt not fear them: because the Lord thy God is with thee, who brought thee out of the land of Egypt. 2And when the battle is now at hand, the priest shall stand before the army, and shall speak to the people in this manner: 3Hear, O Israel, you join battle this day against your enemies, let not your heart be dismayed, be not afraid, do not give back, fear ye them not: 4Because the Lord your God is in the midst of you, and will fight for you against your enemies, to deliver you from danger. 5And the captains shall proclaim through every band in the hearing of the army: What man is there, that hath built a new house, and hath not dedicated it? let him go and return to his house, lest he die in the battle, and another man dedicate it. 6What man is there, that hath planted a vineyard, and hath not as yet made it to be common, whereof all men may eat? let him go, and return to his house, lest he die in the battle, and another man execute his office. 7What man is there, that hath espoused a wife, and not taken her? let him go, and return to his house, lest he die in the war, and another man take her. 8After these things are declared they shall add the rest, and shall speak to the people: What man is there that is fearful, and faint hearted? let him go, and return to his house, lest he make the hearts of his brethren to fear, as he himself is possessed with fear. 9And when the captains of the army shall hold their peace, and have made an end of speaking, every man shall prepare their bands to fight.
10If at any time thou come to fight against a city, thou shalt first offer it peace. 11If they receive it, and open the gates to thee, all the people that are therein, shall be saved, and shall serve thee paying tribute. 12But if they will not make peace, and shall begin war against thee, thou shalt besiege it. 13And when the Lord thy God shall deliver it into thy bands, thou shalt slay all that are therein of the male sex, with the edge of the sword, 14Excepting women and children, cattle and other things, that are in the city. And thou shalt divide all the prey to the army, and thou shalt eat the spoils of thy enemies, which the Lord thy God shall give thee. 15So shalt thou do to all cities that are at a great distance from thee, and are not of these cities which thou shalt receive in possession. 16But of those cities that shall be given thee, thou shalt suffer none at all to live: 17But shalt kill them with the edge of the sword, to wit, the Hethite, and the Amorrhite, and the Chanaanite, the Pherezite, and the Hevite, and the Jebusite, as the Lord thy God hath commanded thee: 18Lest they teach you to do all the abominations which they have done to their gods: and you should sin against the Lord your God.
19When thou hast besieged a city a long time, and hath compassed it with bulwarks to take it, thou shalt not cut down the trees that may be eaten of, neither shalt thou spoil the country round about with axes: for it is a tree, and not a man, neither can it increase the number of them that fight against thee. 20But if there be any trees that are not fruitful, but wild, and fit for other uses, cut them down, and make engines, until thou take the city, which fighteth against thee.