Art. XXII. Belligerents are not unlimited as to their choice of means of injuring the enemy.

Art. XXIII. Besides the prohibitions established by special agreements, it is especially forbidden:

(a) To employ poison or poisoned arms.

(b) To kill or wound by treachery individuals belonging to the nation or army of the enemy.

(c) To kill or wound an enemy who, having laid down his arms, or having no longer the means of defending himself, has surrendered unconditionally.

(d) To declare that quarter will not be given.

(e) To employ arms, projectiles, or substances which are calculated to cause unnecessary pain.

(f) To make unlawful use of flags of truce, or the national flag, or military insignia, or uniform of the enemy, or the distinctive signs of the Geneva Convention.

(g) To destroy or seize the property of the enemy, except when such destruction or seizure may be imperiously demanded by the necessities of the war.

Art. XXIV. Stratagems of war and the employment of the means necessary to secure information as to the enemy and the theatre of military operations are lawful.

Art. XXV. It is forbidden to attack or to bombard towns, villages, houses, or dwellings which are not defended.

Art. XXVI. The commander of the attacking troops, before undertaking a bombardment, will, except in case of an open assault, do all that lies in his power to give warning to the authorities.

Art. XXVII. In sieges and bombardments every precaution is to be taken to spare, as much as possible, buildings devoted to religious worship, to the arts or sciences, to charity, and to hospitals and places where the sick and wounded are collected, provided they are not used at the same time for military purposes.

Art. XXVIII. It is forbidden to give over to pillage even a place taken by assault.