A large and difficult field of moral compromise is opened out in the case of war, which necessarily involves a complete suspension of great portions of the moral law. This is not merely the case in unjust wars; it applies also, though in a less degree, to those which are most necessary and most righteous. War is not, and never can be, a mere passionless discharge of a painful duty. It is in its essence, and it is a main condition of its success, to kindle into fierce exercise among great masses of men the destructive and combative passions--passions as fierce and as malevolent as that with which the hound hunts the fox to its death or the tiger springs upon its prey. Destruction is one of its chief ends. Deception is one of its chief means, and one of the great arts of skilful generalship is to deceive in order to destroy. Whatever other elements may mingle with and dignify war, this at least is never absent; and however reluctantly men may enter into war, however conscientiously they may endeavour to avoid it, they must know that when the scene of carnage has once opened these things must be not only accepted and condoned, but stimulated, encouraged and applauded. It would be difficult to conceive a disposition more remote from the morals of ordinary life, not to speak of Christian ideals, than that with which the soldiers most animated with the fire and passion that lead to victory rush forward to bayonet the foe. War indeed, which is absolutely indispensable in our present stage of civilisation, has its own morals which are very different from those of peaceful life. Yet there are few fields in which, through the stress of moral motives, greater changes have been effected. In the early stages of human history it was simply a question of power. There was no distinction between piracy and regular war, and incursions into a neighbouring State without provocation and with the sole purpose of plunder brought with them no moral blame. To carry the inhabitants of a conquered country into slavery; to slaughter the whole population of a besieged town; to destroy over vast tracts every town, village and house, and to put to death every prisoner, were among the ordinary incidents of war. These things were done without reproach in the best periods of Greek and Roman civilisation. In many cases neither age nor sex was spared![25] In Rome the conquered general was strangled or starved to death in the Mamertine prison. Tens of thousands of captives were condemned to perish in gladiatorial shows. Julius Cæsar, whose clemency has been so greatly extolled, 'executed the whole senate of the Veneti; permitted a massacre of the Usipetes and Tencteri; sold as slaves 40,000 natives of Genabum; and cut off the right hands of all the brave men whose only crime was that they held to the last against him their town of Uxellodunum.'[26] No slaughter in history is more terrible than that which took place at Jerusalem under the general who was