Occasionally it is argued that modern “total” warfare demands that all citizens contribute to the war effort and that consequently everyone is a combatant. The argument can hardly be sustained, for Catholic doctrine insists that those whose participation is only remote and accidental are not to be classified as combatants. In a well-documented article on “The Morality of Obliteration Bombing,” by John C. Ford, S.J. (_Theological Studies_, V, 1944, pp. 261-309), the validity of the distinction between combatants and innocent non-combatants, even in the condition of modern war, is upheld. Fr. Ford shows that in an industrial city, as found in the United States, three-fourths of the population belong to the non-combatant category, and he lists more than a hundred trades or professions which, according to the natural law, exclude their members from the category of combatants. Direct attacks on such a population clearly would constitute unjustifiable killing or wounding of non-combatants.
1411. The Sentence of Death for Military Crimes.—(a) It is lawful to sentence to death persons guilty of international crime, such as those who approach when warned to halt, civilians who fire on the troops, guerrillas, pirates, spies and deserters. (b) It is not lawful to sentence to death persons not guilty of international crime. Thus, a private soldier should not be executed because under orders he killed a non-combatant; a hostage, not guilty of any capital crime, should not be put to death, because his fellow-citizens for whom he is held rebel or break faith.
1412. Imprisonment and Restraint.—(a) Combatants may be made prisoners of war, non-combatants are subject to the restrictions of military rules when their territory is occupied, and in very exceptional cases they may be transported behind their enemy’s lines. (b) Prisoners of war and inhabitants of occupied territory are to be treated as human beings, but not better than the soldiers of one’s own army. They may not be reduced to slavery, held as hostages, tortured or starved to death, or placed in front trenches as a shield to one’s own forces.
1413. The Destruction or Seizure of Property During War.—(a) The military property of the enemy nation or of its subjects may be confiscated or destroyed, just as an individual has the right to destroy the weapon of an unjust aggressor. Hence, a commander may demolish fortifications, war factories, airships, warships, weapons and artillery; he may cut off or seize supplies and provisions of money, food or drink.
(b) The public, non-military property of the enemy may be occupied by a successful invader. He may appropriate movable goods (works of art and some others are excepted by international law), and he may use immovable goods (public places of worship, museums, etc., are excepted by law).
(c) As to private property of enemy subjects on land, international law requires that immovables generally be respected, and movables can be seized only for some necessary purpose of war. Requisitions and contributions may be exacted and soldiers may be billeted in the homes of citizens, but only so much may be levied as is needed for army maintenance and civil administration, and compensation must be made, or a receipt be given for future compensation. War is made, not against private persons, but against the state.
(d) As to private property on sea, the usage has been that the merchant ships of the enemy may be captured and made a lawful prize.
(e) The property of neutrals on land must not be molested, unless it is not really neutral, as when it is being used by the enemy. As regards the ships and shipping of neutrals on the high seas, they are not up to the present protected by international agreement. Rather the naval powers are divided between the theories of command of the seas and freedom of the seas. Thus, Great Britain claims the right to search, seize and hold the vessels or cargoes of neutrals who carry contraband or attempt to trade with the enemy in the face of a blockade.
1414. It is an axiom that booty taken in war belongs, not to the private soldiers, but to their government. Hence, the question arises: Are private soldiers, who take the goods of citizens without authorization from their officers, bound to make restitution? (a) If they take what is necessary for their own sustenance, they act against military discipline, but not against justice, and are not bound to restore. (b) If they take other things, they are bound to restore, since international agreements make this a duty of justice. But, if neither of the belligerents observed this agreement, the obligation of restitution cannot be insisted on as grave.
1415. Is it lawful to give over a city to be looted by the soldiery? (a) In ancient times, this was sometimes permissible, as when compensation and victory in a just war was otherwise impossible. (b) In modern times and according to present international law, looting is strictly forbidden. Violation of agreements by city heads gives no right to attack the property of the citizens who are not responsible, and valiant defense of the city by its troops does not forfeit the rights of the inhabitants to their goods.