The Persian cavalry was armed, in the early times of the monarchy, almost exactly in the same manner as their infantry. Afterwards, however a considerable change seems to have been made. In the time of the younger Cyrus cavalry soldiers were very fully protected. They wore helmets on their heads, coats of mail about their bodies, and greaves on their legs. Their chief offensive arms seem, then, to have been the short sword, the javelin, and the knife. It is probable that they were without shields, being sufficiently defended by their armor, which (as we have seen) was almost complete. The javelin of the horseman, which was his special weapon, was a short strong spear or pike, with a shaft of cornel-wood, and an iron point. It was common for him to carry two such weapons, one of which he used as a missile, while he retained the other in order to employ it in hand-to-hand combat with the enemy. It was a stout manageable weapon, and though no match for the longer and equally strong spear of the Macedonian cavalry, was preferred by Xenophon to the long weak reed-lance commonly carried by horse-soldiers in his day. It was the practice of the later Persians to protect with armor, not only the horseman, but the horse. They selected for the service large and powerful animals, chiefly of the Nisaean breed, and cased them almost wholly in mail. The head was guarded by a frontlet, and the neck and chest by a breast-piece; the sides and flanks had their own special covering and cuisses defended the thighs. These defences were not merely, like those of the later Assyrian heavy cavalry, of felt or leather, but consisted, like the cuirasses worn by the riders, of some such material covered with metal scales. The weight which the horse had to sustain was thus very great, and the movements of the cavalry force were, in consequence, slow and hesitating. Flight was difficult; and, in a retreat, the weaker animals were apt to sink under their burdens, and to be trampled to death by the stronger ones. There can be no doubt that, besides these heavy horsemen, the Persians employed, even in the latest times, and much more in the earlier, a light and agile cavalry force. Such were the troops which, under Tissaphernes, harassed the Ten Thousand during their retreat; and such, it may be conjectured, was really at all times the great body of their cavalry. The education of the Persian, as we shall see hereafter, was directed to the formation of those habits of quickness and agility in the mounting and managing of horses, which have a military value only as furnishing a good training for the light-cavalry service; and the tendency of the race has at all times been, not to those forms of military organization which are efficient by means of solidity and strength, but to those lighter, more varied, and more elastic branches which compensate for a want of solidity by increased activity, readiness, and ease of movement.