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.

XXIV.  The Romans were startled at the noise, when all of a sudden throwing off the covering of their armour the Parthians appeared, with their helmets and breastplates flashing like flame, the Margian steel[72] glittering sharp and bright, and the horses equipped in mail of brass and iron; but Surena was most conspicuous of all, being the tallest and handsomest man among them, though his personal appearance, owing to his feminine beauty, did not correspond to his reputation for courage, for he was dressed more in the Median fashion, with his face painted[73] and his hair parted, while the rest of the Parthians, still keeping to the Scythian fashion, wore their hair long and bushy to make themselves more formidable.  At first the Parthians intended to fall upon them with their long spears, and to drive the front ranks from their ground; but when they saw the depth of their close-locked ranks, and the firmness and stability of the men, they drew back; and while they seemed to be at the same time dispersing themselves and breaking their ranks, they threw themselves around the square before the Romans were aware of it.  Crassus ordered the light-armed troops to spring forward; but they had not advanced far before they were met by a shower of arrows, which galled them, and they ran back for shelter among the legionary soldiers, and caused the beginning of disorder and alarm among the Romans, who saw the vigour with which the arrows were discharged and their strength, for they tore the armour and made their way through everything alike, whether hard or soft defence.  The Parthians, dispersing themselves at considerable distances from one another, began to discharge their arrows from all points at once, not taking any very exact aim (for the close and compact ranks of the Romans did not give a man the opportunity of missing if he wished it), but sending their arrows with vigorous