XXI. While Crassus was considering and reflecting on these matters, there comes an Arab chieftain, Ariamnes[67] by name, a cunning and faithless man, and of all the misfortunes that were by chance combined to ruin the Romans the chief and crowning mischief. Some of them who had served with Pompeius knew him as one who had received favours from Pompeius, and was supposed to be a friend to the Romans; but he now came to Crassus with a treacherous intent, and with the privity of the royal generals, to try if he could draw him far away from the river and the foot of the hills, into a boundless plain, where he might be surrounded by the enemy; for nothing was further from the intentions of the Parthians than to attack the Romans right in front. Accordingly, the barbarian coming to Crassus (and he was a plausible talker), spake in high terms of Pompeius as his benefactor, and praised the force of Crassus; but he blamed him for his tardiness, inasmuch as he was delaying and making preparation, as if he would have occasion to employ arms instead of hands and the most active feet, against an enemy who had long been trying to get together, as quick as they could, their most valuable property and their best slaves, and to move off to the Scythians or Hyrkanians. "And yet," he said, "if you intend to fight, you ought to press on before the king recovers his courage and all his forces are concentrated; for now Surena and Sillakes have been thrown in your way to stand the attack, and the king is no where to be seen." But all this was false. For Hyrodes had at first divided his forces into two parts, and he was himself ravaging Armenia to take vengeance on Artavasdes; but he sent Surena against the Romans, not because he despised them, as some say, for it was not consistent for him to disdain Crassus as an antagonist, the first of the Romans, and to war against Artavasdes and take the villages of Armenia; but it seems that he really feared the danger, and that he was on the watch to await the result, and that he put Surena in the front to try the fortune of a battle, and so to divert the enemy. For Surena was no person of mean estate: in wealth, birth, and consideration, he was next to the king; but, in courage and ability, the first of the Parthians of his time; and, besides all this, in stature and beauty of person he had no equal. He used always to travel, when he was on his own business, with a thousand camels to carry his baggage, and he had following him two hundred carriages for concubines; and a thousand mailed horsemen, with a larger number of light cavalry, escorted him; and he had in all, horsemen, clients,[68] and slaves, no less than ten thousand. Now by hereditary right he had the privilege of first placing the diadem on the head of him who became king of the Parthians;[69] and this very Hyrodes, who had been driven out, he restored to the Parthian empire, and took for him Seleukeia the Great, being the first to mount the wall and to put to flight with his own hand those who opposed him. Though he was not yet thirty years of age at that time, he had the first reputation for prudent counsel and judgment, by which qualities particularly he caused the ruin of Crassus, who through his confidence and pride in the first place, and next through his fears and his misfortunes, became a most easy victim to fraud.
XXII. The barbarian, after persuading Crassus, drew him away from the river, and led him through the plains by a track at first convenient and easy, but which soon became toilsome; for it was succeeded by deep sand, and plains treeless and waterless, not bounded in any direction by any object that the eye could reach, so that, not only through thirst and the difficulty of the march, was the army exhausted, but even the aspect of all around caused the soldiers to despond past all comfort, seeing neither plant, nor stream, nor top of sloping hill, nor blade of grass sprouting or rising through the earth, but a bare sea-like wave of desert heaps of sand environing the army. Now this of itself made the Romans suspect treachery. Messengers also came from Artavasdes the Armenian, with a message that he was engaged in a heavy struggle since Hyrodes had fallen upon him, and that he could not send Crassus aid; but he advised Crassus above all things to change his route immediately, and, by joining the Armenians, to bring the contest with Hyrodes to a close: but, if he would not do this, he recommended him to advance, and always to avoid encamping in such places as were adapted for the movements of cavalry, and to keep close to the mountainous parts: to all which Crassus sent no written answer, but, under the influence of passion and perverse disposition, he answered, that he had no leisure at present to deal with the Armenians, but he would come at another time to punish Artavasdes for his treachery. Cassius was again much dissatisfied: but he gave over advising Crassus, who was out of humour with him, though Cassius himself abused the barbarian. "What evil dæmon," he said, "vilest of men, brought you to us, and by what drugs and witchcraft have you persuaded Crassus to plunge his army into a boundless wilderness and an abyss, and to pursue a path more fit for a nomadic chief of robbers than for a Roman Imperator?" But the barbarian, who was a cunning follow, with abject servility, prayed him to endure a little longer; and, while running along with the soldiers and giving them his help, he would jeer at them in a laughing mood, and say, "I suppose you think that you are marching through Campania, and you long for the fountains, and streams, and shades, and baths, and taverns? Have you forgotten that you are crossing the confines of the Arabs and Assyrians?" Thus the barbarian amused the Romans, and before his treachery was discovered he rode off, not, however, without the knowledge of Crassus, after making him believe that he would serve the Roman army, and put the affairs of the enemy in confusion.
XXIII. It is said that on that day Crassus did not appear, as is the custom of Roman generals, in a purple dress, but in black, which he immediately changed on observing what he had done: and it is also said that the men who carried the standards had much difficulty in raising some of them up, for they stuck in the ground as if they were firmly rooted there. Crassus ridiculed all these omens, and quickened his march, urging the infantry to follow after the cavalry, till at last a few of those who had been sent forward as scouts came up, and reported that the rest of them had been cut off by the enemy, and they had escaped with difficulty, and that the Parthians were advancing with a large force, and full of confidence. This threw all the army into confusion, and Crassus was completely confounded, and began to put his men in order hastily, and with no great presence of mind: at first, as Cassius recommended, he extended the line of the legionary soldiers as far as possible in the plain, and making it of small depth, in order to prevent the enemy from attacking them on the flank, he distributed the cavalry on the wings; but he changed his plan and, drawing his men together, formed them into a deep square of four fronts, with twelve cohorts on each side. By the side of each cohort he placed a body of horse, in order that no part of the army might be without the aid of the cavalry, but might make the attack equally protected on all sides. He gave one of the wings to Cassius, and the other to young Crassus; he himself took his station in the centre. Thus advancing, they came to a stream called Balissus,[70] which was neither large nor copious; but it was a joyful sight to the soldiers in the midst of the drought and heat, and by comparison with the rest of their laborious march through a country without water. Now most of the commanders thought that they ought to encamp and spend the night there, and learn what was the number of the enemy, and the nature and disposition of their force, and so advance against them at daybreak; but Crassus, being prevailed upon by the importunity of his son, and the cavalry with him, to advance immediately, and engage with the enemy, gave orders for the men who required it to eat and drink in their ranks. And before this could be well accomplished all through the ranks, he led on his men, not slowly, nor halting at intervals, as is usual when men are marching to battle, but he kept them up to a quick, unbroken pace, until the enemy were in sight, who, contrary to expectation, did not appear to the Romans to be either numerous or formidable; for Surena disguised his numbers by placing the mass of his force behind the front ranks, and he prevented their bright armour from being seen by ordering his men to cover themselves with cloaks and skins. But when they were near the Romans, and the standard was raised by the general, first of all they filled the plain with a deep sound and a terrific noise; for the Parthians do not excite themselves to battle with horns or trumpets, but they have hollow instruments,[71] made of skin, and furnished with brass bells, on which they strike at the same time in various parts; and these instruments produce a kind of deep and dismal sound, compounded of the roaring of wild beasts and the harsh crash of thunder; for the Parthians rightly judge that of all the senses the hearing is that which causes the greatest alarm in the mind, and that, when this sense is affected, there is the speediest and greatest disturbance in the judgment.