As the warlike emperor, instead of Constantius, had chosen Alexander for his model, he advanced without delay to Carrhæ, a very ancient city of Mesopotamia, at the distance of fourscore miles from Hierapolis. The temple of the Moon attracted the devotion of Julian; but the halt of a few days was principally employed in completing the immense preparations of the Persian War. The secret of the expedition had hitherto remained in his own breast; but as Carrhæ is the point of separation of the two great roads, he could no longer conceal, whether it was his design to attack the dominions of Sapor on the side of the Tigris, or on that of the Euphrates. The emperor detached an army of thirty thousand men, under the command of his kinsman Procopius, and of Sebastian, who had been duke of Egypt. They were ordered to direct their march towards Nisibis, and to secure the frontier from the desultory incursions of the enemy, before they attempted the passage of the Tigris. Their subsequent operations were left to the discretion of the generals; but Julian expected, that after wasting with fire and sword the fertile districts of Media and Adiabene, they might arrive under the walls of Ctesiphon about the same time that he himself, advancing with equal steps along the banks of the Euphrates, should besiege the capital of the Persian monarchy. The success of this well-concerted plan depended, in a great measure, on the powerful and ready assistance of the king of Armenia, who, without exposing the safety of his own dominions, might detach an army of four thousand horse, and twenty thousand foot, to the assistance of the Romans. But the feeble Arsaces Tiranus, king of Armenia, had degenerated still more shamefully than his father Chosroes, from the manly virtues of the great Tiridates; and as the pusillanimous monarch was averse to any enterprise of danger and glory, he could disguise his timid indolence by the more decent excuses of religion and gratitude.
The military dispositions of Julian were skilfully contrived to deceive the spies, and to divert the attention of Sapor. The legions appeared to direct their march towards Nisibis and the Tigris. On a sudden they wheeled to the right; traversed the level and naked plain of Carrhæ; and reached, on the third day, the banks of the Euphrates, where the strong town of Nicephorium, or Callinicum, had been founded by the Macedonian kings. From thence the emperor pursued his march, above ninety miles, along the winding stream of the Euphrates, till, at length, about one month after his departure from Antioch, he discovered the towers of Circesium, the extreme limit of the Roman dominions. The river Chaboras falls into the Euphrates at Circesium, and as soon as the trumpet gave the signal of march, the Romans passed the little stream which separated two mighty and hostile empires.
[363 A.D.]
Two cities of Assyria presumed to resist the arms of a Roman emperor; and they both paid the severe penalty of their rashness. At the distance of fifty miles from the royal residence of Ctesiphon, Perisabor, or Anbar, held the second rank in the province: a city, large, populous, and well-fortified, surrounded with a double wall, almost encompassed by a branch of the Euphrates, and defended by the valour of a numerous garrison. The exhortations of Hormisdas were repulsed with contempt; and the ears of the Persian prince were wounded by a just reproach, that, unmindful of his royal birth, he conducted an army of strangers against his king and country. The Assyrians maintained their loyalty by a skilful, as well as vigorous, defence; till the lucky stroke of a battering-ram having opened a large breach, by shattering one of the angles of the wall, they hastily retired into the fortifications of the interior citadel. The soldiers of Julian rushed impetuously into the town, and after the full gratification of every military appetite, Perisabor was reduced to ashes; and the engines which assaulted the citadel were planted on the ruins of the smoking houses. The contest was continued by an incessant and mutual discharge of missile weapons; and the superiority which the Romans might derive from the mechanical powers of their ballistæ and catapultæ was counterbalanced by the advantage of the ground on the side of the besieged. But as soon as an helepolis had been constructed, which could engage on equal terms with the loftiest ramparts, the tremendous aspect of a moving turret, that would leave no hope of resistance or of mercy, terrified the defenders of the citadel into an humble submission; and the place was surrendered only two days after Julian first appeared under the walls of Perisabor. Twenty-five hundred persons, of both sexes, the feeble remnant of a flourishing people, were permitted to retire; the plentiful magazines of corn, of arms, and of splendid furniture were partly distributed among the troops, and partly reserved for the public service; the useless stores were destroyed by fire, or thrown into the stream of the Euphrates; and the fate of Amida was revenged by the total ruin of Perisabor.
The city, or rather the fortress, of Maogamalcha, which was defended by sixteen large towers, a deep ditch, and two strong and solid walls of brick and bitumen, appears to have been constructed at the distance of eleven miles, as the safeguard of the capital of Persia. The emperor, apprehensive of leaving such an important fortress in his rear, immediately formed the siege of Maogamalcha; and the Roman army was distributed for that purpose into three divisions. Victor, at the head of the cavalry, and of a detachment of heavy-armed foot, was ordered to clear the country, as far as the banks of the Tigris, and the suburbs of Ctesiphon. The conduct of the attack was assumed by Julian himself, who seemed to place his whole dependence in the military engines which he erected against the walls, while he secretly contrived a more efficacious method of introducing his troops into the heart of the city. Under the direction of Nevitta and Dagalaiphus, the trenches were opened at a considerable distance, and gradually prolonged as far as the edge of the ditch. The ditch was speedily filled with earth; and, by the incessant labour of the troops, a mine was carried under the foundations of the walls, and sustained, at sufficient intervals, by props of timber. Three chosen cohorts, advancing in a single file, silently explored the dark and dangerous passage, till their intrepid leader whispered back the intelligence, that he was ready to issue from his confinement into the streets of the hostile city. Julian checked their ardour, that he might insure their success; and immediately diverted the attention of the garrison by the tumult and clamour of a general assault. The Persians, who, from their walls, contemptuously beheld the progress of an impotent attack, celebrated, with songs of triumph, the glory of Sapor; and ventured to assure the emperor, that he might ascend the starry mansion of Ormuzd, before he could hope to take the impregnable city of Maogamalcha. The city was already taken. History has recorded the name of a private soldier, the first who ascended from the mine into a deserted tower. The passage was widened by his companions, who pressed forward with impatient valour. Fifteen hundred enemies were already in the midst of the city. The astonished garrison abandoned the walls, and their only hope of safety; the gates were instantly burst open; and the revenge of the soldier, unless it were suspended by lust or avarice, was satiated by an undistinguishing massacre. The governor, who had yielded on a promise of mercy, was burned alive a few days afterwards, on a charge of having uttered some disrespectful words against the honour of Prince Hormisdas. The fortifications were razed to the ground; and not a vestige was left to indicate that the city of Maogamalcha had ever existed.
The successful valour of Julian had triumphed over all the obstacles that opposed his march to the gates of Ctesiphon. But the reduction, or even the siege, of the capital of Persia, was still at a distance; nor can the military conduct of the emperor be clearly apprehended, without a knowledge of the country which was the theatre of his bold and skilful operations. Twenty miles to the south of Baghdad, and on the eastern bank of the Tigris, the curiosity of travellers has observed some ruins of the palaces of Ctesiphon, which, in the time of Julian, was a great and populous city. The name and glory of the adjacent Seleucia were forever extinguished; and the only remaining quarter of that Greek colony had resumed, with the Assyrian language and manners, the primitive appellation of Coche.
Coche was situated on the western side of the Tigris; but it was naturally considered as a suburb of Ctesiphon, being supposedly connected with it by a permanent bridge of boats. The united parts contributed to form the common epithet of Al Modain, “the cities,” which the Orientals have bestowed on the winter residence of the Sassanids; and the whole circumference of the Persian capital was strongly fortified by the waters of the river, by lofty walls, and by impracticable morasses. Near the ruins of Seleucia the camp of Julian was fixed, and secured by a ditch and rampart against the sallies of the numerous and enterprising garrison of Coche. In this fruitful and pleasant country the Romans were plentifully supplied with water and forage; and several forts which might have embarrassed the motions of the army submitted, after some resistance, to the efforts of their valour. The fleet passed from the Euphrates into an artificial derivation of that river, which pours a copious and navigable stream into the Tigris, at a small distance below the great city. If they had followed this royal canal, which bore the name of Nahar-Malcha, the intermediate situation of Coche would have separated the fleet and army of Julian; and the rash attempt of steering against the current of the Tigris, and forcing their way through the midst of a hostile capital, must have been attended with the total destruction of the Roman navy. The prudence of the emperor foresaw the danger, and provided the remedy. As he had minutely studied the operations of Trajan in the same country, he soon recollected that his warlike predecessor had dug a new and navigable canal, which, leaving Coche on the right hand, conveyed the waters of the Nahar-Malcha into the river Tigris, at some distance above the cities. From the information of the peasants Julian ascertained the vestiges of this ancient work, which were almost obliterated by design or accident. By the indefatigable labour of the soldiers, a broad and deep channel was speedily prepared for the reception of the Euphrates. A strong dike was constructed to interrupt the ordinary current of the Nahar-Malcha: a flood of waters rushed impetuously into their new bed; and the Roman fleet, steering their triumphant course into the Tigris, derided the vain and ineffectual barriers which the Persians of Ctesiphon had erected to oppose their passage.
A BATTLE BY THE TIGRIS
As it became necessary to transport the Roman army over the Tigris, another labour presented itself, of less toil, but of more danger, than the preceding expedition. The stream was broad and rapid; the ascent steep and difficult; and the entrenchments, which had been formed on the ridge of the opposite bank, were lined with a numerous army of heavy cuirassiers, dexterous archers, and huge elephants, which (according to the extravagant hyperbole of Libanius) could trample, with the same ease, a field of corn or a legion of Romans. In the presence of such an enemy, the construction of a bridge was impracticable; and the intrepid prince, who instantly seized the only possible expedient, concealed his design till the moment of execution from the knowledge of the barbarians, of his own troops, and even of his generals themselves. Under the specious pretence of examining the state of the magazines, fourscore vessels were gradually unladen; and a select detachment, apparently destined for some secret expedition, was ordered to stand to their arms on the first signal. Julian disguised the silent anxiety of his own mind with smiles of confidence and joy; and amused the hostile nations with the spectacle of military games, which he insultingly celebrated under the walls of Coche. The day was consecrated to pleasure; but, as soon as the hour of supper was past, the emperor summoned his generals to his tent, and acquainted them that he had fixed that night for the passage of the Tigris. They stood in silent and respectful astonishment; but, when the venerable Sallust assumed the privilege of his age and experience, the rest of the chiefs supported with freedom the weight of his prudent remonstrances.