The delicacy of dealing with such a subject, when the memories of the Franco-German war were still fresh and green, led ultimately to a unanimous agreement to suppress these clauses altogether, and to leave the matter, as the Belgian deputy expressed it, in the domain of unwritten law till the progress of science and civilisation should bring about a completely satisfactory solution. Nevertheless, the majority of men will be inclined, in reference to this resolution, to say with the Russian Baron Jomini, the skilful President of that Military Council: ‘I regret that the uncertainty of silence is to prevail with respect to one of the most bitter necessities of war. If the practice could be suppressed by this reticence, I could not but approve of this course; but if it is still to exist among the necessities of war, this reticence and this obscurity may, it is to be feared, remove any limits to its existence.’

The necessity of some regulation of reprisals, such as that contained in the clauses suggested at Brussels, is no less attested by the events of the war of 1870 than by the customs in this respect which have at all times prevailed, and which, as earlier in time, form a fitting introduction to those later occurrences.

That the fear of reprisals should act as a certain check upon the character of hostilities is too obvious a consideration not to have always served as a wholesome restraint upon military licence. When, for instance, Philip II. of Spain in his war with the Netherlands ordered that no prisoners of war should be released or exchanged, nor any contributions be accepted as an immunity from confiscation, the threat of retaliation led to the withdrawal of his iniquitous proclamation. Nor would other similar instances be far to seek.

Nevertheless, it is evident that, as seldom as war itself is prevented by consideration of the forces in opposition, will its peculiar excesses, which constitute its details, be restrained by the fear of retaliatory measures; and inasmuch as the primary offence is more often the creation of rumour than a proved fact, the usual result of reprisals is, not that one belligerent amends its ways, but that both belligerents become more savage and enter on a fatal career of competitive atrocities. In the wars of the fifteenth century between the Turks and Venetians, ‘Sultan Mahomet would not suffer his soldiers to give quarter, but allowed them a ducat for every head, and the Venetians did the same.’[110] When the Duke of Alva was in the Netherlands, the Spaniards, at the siege of Haarlem, threw the heads of two Dutch officers over the walls. The Dutch in return beheaded twelve Spanish prisoners, and sent their heads into the Spanish trenches. The Spaniards in revenge hung a number of prisoners in sight of the besieged; and the latter in return killed more prisoners; and so it went on during all the time that Alva was in the country, without the least improvement resulting from such sanguinary reprisals.[111] At the siege of Malta, the Grand Master, in revenge for some horrible Turkish barbarities, massacred all his prisoners and shot their heads from his cannon into the Turkish camp.[112] In one of the wars of Louis XIV., the Imperialist forces having put to death a French lieutenant and thirty troopers a few hours after having promised them quarter, Feuquières, for reprisals, slew the whole garrison of two towns that he won by surprise, though the number so slain in each instance amounted to 650 men (1689).[113]

To all these cases the question asked by Vattel very pertinently applies: ‘What right have you to cut off the nose and ears of the ambassador of a barbarian who has treated your ambassador in that manner?’ The question is not an easy one to answer, for we have no more right in war than in civil life to punish the innocent for the guilty apart from the ordinary accidents of hostilities, even if otherwise we must dispense with redress altogether. To do so by intention and in cold blood is ferocious, whatever the pretext of justification, and is never worth the passing gratification it affords. The citizens of Ghent, in their famous war with the Earl of Flanders, not only destroyed his house, but the silver cradle and bathing tub he had used as a child and the very font in which he had been baptized; but such reprisals are soon regretted, and read very pitiably in the eyes of the after-world.

It is pleasanter to record some instances where abstinence from reprisals has not been without its reward. It is said that Cæsar in Iberia, when, in spite of a truce, the enemy killed many of his men, instead of retaliating, released some of his prisoners and thereby brought the foe to regard him with favour. We read in Froissart that the Lisboners refrained from retaliating on the Castilians, when the latter mutilated their Portuguese prisoners; and the English Government acted nobly when it refused to reciprocate the decree of the French Convention (though that also was meant as a measure of reprisals) that no English or Hanoverian prisoner should be allowed any quarter.[114] But the best story of this kind is that told by Herodotus of Xerxes the Persian. The Spartans had thrown into a well the Persian envoys who had come to demand of them earth and water. In remorse they sent two of their nobles to Xerxes to be killed in atonement; but Xerxes, when he heard the purport of their visit, answered them that he would not act like the Spartans, who by killing his heralds had broken the laws that were regarded as sacred by all mankind, and that, of such conduct as he blamed in them, he would never be guilty himself.[115]

But the most curious feature in the history of reprisals is the fact that they were once regarded as justly exacted for the mere offence of hostile opposition or self-defence. Grotius states that it was the almost constant practice of the Romans to kill the leaders of an enemy, whether they had surrendered or been captured, on the day of triumph. Jugurtha indeed was put to death in prison; but the more usual practice appears to have been to keep conquered potentates in custody, after they had been led in triumph before the consul’s chariot. This was the fate of Perseus, king of Macedonia, who was also allowed to retain his attendants, money, plate, and furniture;[116] of Gentius, king of Illyria;[117] of Bituitus, king of the Arvernians. Prisoners of less distinction were sold as slaves, or kept in custody till their friends paid their ransom.

But in the mediæval history of Europe, in the so-called times of chivalry, a far worse spirit prevailed with regard to the treatment of captives. Godfrey of Bouillon, one of the brightest memories of chivalry, was responsible for the promiscuous slaughter of three days which the Crusaders exacted for the six weeks’ siege which it had cost them to take Jerusalem (1099). The Emperor Barbarossa had 1,190 Swabian prisoners delivered to the executioner at Milan, or shot from military engines.[118] Charles of Anjou reserved many prisoners, taken at the battle of Beneventum, to be killed as criminals on his entrance into Naples. When the French took the castle of Pesquière from the Venetians by storm, they slew all but three who surrendered to the pleasure of the king; and Louis XII., who counted for a humane monarch, though his victims offered 100,000 ducats for their lives, swore that he would neither eat nor drink till they were hanged (1509).[119]

The indignation of the Roman Senate on one occasion with a consul who had sold as slaves 10,000 Ligurian prisoners, though they had surrendered at discretion,[120] was a sentiment that never affected the warriors of mediæval Christendom. A surrender at discretion ceased to constitute a claim for mercy. Where the pagan held it wrong to enslave, the Christian never hesitated to kill. Froissart’s story of the six citizens of Calais, whom Edward III. was with difficulty restrained from hanging for the obstinate siege which their town had resisted, throws a light over the war customs of that time, which other incidents of history abundantly confirm. The record of the capitulations of cities or garrisons is no pleasant one, but it is a record which must be touched upon, in order that war and its still prevalent maxims may be judged at their proper value. We need scarcely travel further than the fifteenth century alone in search of facts to place in its proper light this aspect of martial atrocities.

When the town of Rouen surrendered to Henry V. of England, the latter stipulated for three of the citizens to be left to his disposal, of whom two purchased their lives, and the third was beheaded (1419).[121] When the same king the year following was besieging the castle of Montereau, he sent some twenty prisoners to treat with the governor for a surrender; but when the governor refused to treat, even to save their lives, and when, after a fearful leave-taking with their wives and relatives, they had been escorted back to the English army, ‘the King of England ordered a gallows to be erected and had them all hanged in sight of those within the castle.’[122] When the English took the castle of Rougemont by storm, and some sixty of its defenders alive, with the loss of only one Englishman, Henry V., in revenge for his death, caused all the prisoners to be drowned in the Loire.[123] When Meaux surrendered to the same king, it was stipulated that six of its bravest defenders should be delivered up to justice, four of whom were beheaded at Paris, and its commander at once hung to a tree outside the walls of the city (1422).[124]