The proper position of the commander-in-chief was considered to be the centre of the line of battle. He was regarded as safer there than he would have been on either wing; and it was seen that, from such a position, his orders would be most rapidly conveyed to all parts of the battlefield. It was not, however, thought to be honorable that he should keep aloof from the fight, or avoid risking his own person. On the contrary, he was expected to take an active part in the combat; and therefore, though his place was not exactly in the very foremost ranks, it was towards the front, and the result followed that he was often exposed to imminent danger. The consequences of this arrangement were frequently disastrous in the extreme, the death or flight of the commander producing universal panic, stopping the further issue of any general order, and thus paralyzing the whole army.
The numbers of a Persian army, though no doubt exaggerated by the Greeks, must have been very great, amounting, probably, on occasions, to more than a million of combatants. Troops were drawn from the entire empire, and were marshalled in the field according to nations, each tribe accoutred in its own fashion. Here were seen the gilded breastplates and scarlet kilts of the Persians and Medes; there the woollen shirt of the Arab, the leathern jerkin of the Berber, or the cotton dress of the native of Hindustan. Swart savage Ethiops from the Upper Nile, adorned with a war-paint of white and red, and scantily clad with the skins of leopards or lions, fought in one place with huge clubs, arrows tipped with stone, and spears terminating in the horn of an antelope. In another, Scyths, with their loose spangled trousers and their tall pointed caps, dealt death around from their unerring blows; while near them Assyrians, helmeted, and wearing corselets of quilted linen, wielded the tough spear, or the still more formidable iron mace. Rude weapons, like cane bows, unfeathered arrows, and stakes hardened at one end in the fire, were seen side by side with keen swords and daggers of the best steel, the finished productions of the workshops of Phoenicia and Greece. Here the bronze helmet was surmounted with the ears and horns of an ox; there it was superseded by a fox-skin, a leathern or wooden skull-cap, or a head-dress fashioned out of a horse’s scalp. Besides horses and mules, elephants, camels, and wild asses, diversified the scene, and rendered it still more strange and wonderful to the eye of a European. One large body of cavalry was accustomed to enter the field apparently unarmed; besides the dagger, which the Oriental never lays aside, they had nothing but a long leathern thong. They used this, however, just as the lasso is used by the natives of Brazil, and the wretch at whom they aimed their deadly noose had small chance of escape. The Persians, like the Assyrians, usually avoided fighting during the winter, and marched out their armies against the enemy in early spring. With the great hosts which they moved a fixed order of march was most necessary; and we find evidence of so much attention being paid to this point that confusion and disorder seem scarcely ever to have arisen. When the march lay within their own country, it was usual to send on the baggage and the sumpter-beasts in advance, after which came about half the troops, moving slowly in a long and continuous column along the appointed line of route. At this point a considerable break occurred, in order that all might be clear for the most important part of the army, which was now to follow. A guard, consisting of a thousand horse and a thousand foot, picked men of the Persian people, prepared the way for what was most holy in the eyes of the nation—the emblems of their religion, and their king. The former consisted of sacred horses and cars; perhaps, in the later times, of silver altars also, bearing the perpetual and heaven-kindled fire, which was a special object of Persian religious regard, and which the superstition of the people viewed as a sort of palladium, sure to bring the blessings of heaven upon their arms. Behind the sacred emblems followed the Great King himself, mounted on a car drawn by Nissean steeds, and perhaps protected on either side by a select band of his relatives. Behind the royal chariot came a second guard, consisting, like the first, of a thousand foot and a thousand horse. Then followed ten thousand picked foot, probably the famous “Immortals;” then came a body of ten thousand picked Persian horsemen. After these a space of four hundred yards (nearly a quarter of a mile) was left vacant; then marched, in a second continuous column, the remainder of the host.
On entering an enemy’s country, or drawing near a hostile force in their own, certain alterations in these dispositions became necessary, and were speedily effected. The baggage-train was withdrawn, and instead of moving before the army, followed at some little distance in the rear. Horsemen were thrown out in front, to feel for the enemy and notify his arrival. Sometimes, if the host was large, a division of the troops was made, and several corps d’armee advanced against the foe simultaneously by distinct routes. When this took place, the commander-in-chief was careful to accompany the central force, so as to find himself in his proper position if he was suddenly compelled to give battle.
Night movements were seldom attempted by the Persians. They marched from sunrise to sunset, halting, probably, during the midday heat. In their most rapid marches they seldom accomplished more than from twenty to twenty-five miles in the day; and when this rate was attempted for any continuance, it was necessary to rest the men at intervals for as much as three days at a time. The great drag upon rapidity of movement was the baggage-train, which consisted ordinarily of a vast multitude of camels, horses, asses, mules, oxen, etc., in part carrying burthens upon their backs, in part harnessed to carts laden with provisions, tents, and other necessaries. The train also frequently comprised a number of litters, in which the wives or female companions of the chief men were luxuriously conveyed, amid a crowd of eunuchs and attendants, and with all the cumbrous paraphernalia of female wardrobes. Roads, it must be remembered, did not exist; rivers were not bridged, except occasionally by boats; the army marched on the natural ground along an established line of route which no art had prepared for the passage of man or beast. Portions of the route would often be soft and muddy; the carts and litters would become immovable, their wheels sinking into the mire up to the axles; all the efforts of the teams would be unavailing; it must have been imperative to halt the main line, and employ the soldiers in the release of the vehicles, which had to be lifted and carried forward till the ground was sufficiently firm to bear them. When a river crossed the line of route, a ford had to be sought, boats procured, or rafts extemporized. The Persians were skilful in the passage of streams, to which they became accustomed in their first campaigns under Cyrus; but the march was necessarily retarded by these and similar obstacles, and we cannot be surprised that the average rate of movement was slow.
As evening approached the Persians sought a suitable place for their camp. An open plain was preferred for the purpose, and the vicinity of water was a necessity. If an enemy was thought to be at hand, a ditch was rapidly dug, and the earth thrown up inside; or if the soil was sandy, sacks were filled with it, and the camp was protected with sand-bags. Immediately within the rampart were placed the gerrhophori, or Persians armed with large wicker shields. The rest of the soldiers had severally their appointed places, the position assigned to the commander-in-chief being the centre. All the army had tents, which were pitched so as to face the east. The horses of the cavalry were tethered and hobbled in front of the tents of their owners.
The Persians disliked encamping near to their enemy. They preferred an interval of seven or eight miles, which they regarded as a considerable security against a surprise. As their most important arm was the cavalry, and as it was impossible for the cavalry to unfasten and unhobble their steeds, to equip them properly, to arm themselves, and then to mount in a short space of time, when darkness and confusion reigned around, a night attack on the part of an enterprising enemy would have been most perilous to a Persian army. Hence the precaution which they observed against its occurrence—a precaution which was seldom or never omitted where they felt any respect for their foe, and which seems to have been effective, since we do not hear of their suffering any disaster of the kind which they so greatly feared.
The Persians do not seem to have possessed any special corps of pioneers. When the nature of the country was such as to require the felling of timber or the removal of brushwood, the army was halted, and the work was assigned to a certain number of the regular soldiers. For the construction of bridges, however, in important places, and for other works on a grand scale intended to facilitate an expedition, preparations were made beforehand, the tasks being entrusted either to skilled workmen, or to the crews of ships, if they were tolerably easy of performance.
Commissariat arrangements were generally made by the Persians on a large scale, and with the best possible results. An ample baggage-train conveyed corn sufficient to supply the host during some months and in cases where scarcity was apprehended, further precautions were taken. Ships laden with corn accompanied the expedition as closely as possible, and supplemented any deficiency that might arise from a failure on the part of the land transport department. Sometimes, too, magazines were established at convenient points along the intended line of march previously to the setting forth of the army, and stores were thus accumulated at places where it was probable they would be found of most service.
Requisitions for supplies were also made upon the inhabitants of the towns and villages through which lay the route of the army. Whenever the host rested for a night at a place of any consequence, the inhabitants seem to have been required to furnish sufficient bread for a meal to each man, and, in addition, to provide a banquet for the king (or general) and his suite, which was always very numerous. Such requisitions, often intolerably burthensome to those upon whom they were laid, must have tended greatly to relieve the strain upon their own resources, which the sustentation of such enormous hosts as the Persian kings were in the habit of moving, cannot have failed to produce in many cases.
The effectiveness of these various arrangements for the provisioning of troops upon a march was such that Persian armies were rarely, if ever, in any difficulty with respect to their subsistence. Once only in the entire course of their history do we hear of the Persian forces suffering to any considerable extent from a want of supplies. According to Herodotus, Cambyses, when he invaded Ethiopia, neglected the ordinary precautions and brought his army into such straits that his men began to eat each other. This caused the total failure of his expedition, and the loss of a great proportion of the troops employed in it. There is, however, reason to suspect that, even in this case, the loss and difficulty which occurred have been much exaggerated.