[397] Diodor. xvii. 60. Ὁ Παρμενίων ... μόλις ἐτρέψατο τοὺς βαρβάρους, μάλιστα καταπλαγέντας τῇ κατὰ τὸν Δαρεῖον φυγῇ. Curtius, iv. 16, 4-7. “Interim ad Mazæum fama superati regis pervenerat. Itaque, quanquam validior erat, tamen fortunâ partium territus, perculsis languidius instabat.” Arrian, iv. 14, 11; iv. 15, 8. In conducting those succors, on his way back from the pursuit, Alexander traversed the whole field of battle, and thus met face to face some of the best Persian and Parthian cavalry, who were among the last to retire. The battle was already lost, and they were seeking only to escape. As they could not turn back, and had no chance for their lives except by forcing their way through his Companion-cavalry, the combat here was desperate and murderous; all at close quarters, cut and thrust with hand weapons on both sides contrary to the Persian custom. Sixty of the Macedonian cavalry were slain; and a still greater number, including Hephæstion, Kœnus, and Menidas, were wounded, and Alexander himself encountered great personal danger. He is said to have been victorious; yet probably most of these brave men forced their way through and escaped, though leaving many of their number on the field.[398] [398] Arrian, iii. 15, 6. Curtius also alludes to this combat; but with many particulars very different from Arrian (iv. 16, 19-25). Having rejoined his left, and ascertained that it was not only out of danger, but victorious, Alexander resumed his pursuit of the flying Persians, in which Parmenio now took part.[399] The host of Darius was only a multitude of disorderly fugitives, horse and foot mingled together. The greater part of them had taken no share in the battle. Here, as at Issus, they remained crowded in stationary and unprofitable masses, ready to catch the contagion of terror and to swell the number of runaways, so soon as the comparatively small proportion of real combatants in the front had been beaten. On recommencing the pursuit, Alexander pushed forward with such celerity, that numbers of the fugitives were slain or taken, especially at the passage of the river Lykus;[400] where he was obliged to halt for a while, since his men as well as their horses were exhausted. At midnight, he again pushed forward, with such cavalry as could follow him, to Arbêla, in hopes of capturing the person of Darius. In this he was disappointed, though he reached Arbêla the next day. Darius had merely passed through it, leaving an undefended town, with his bow, shield, chariot, a large treasure, and rich equipage, as prey to the victor. Parmenio had also occupied without resistance the Persian camp near the field of battle, capturing the baggage, the camels, and the elephants.[401] [399] Arrian, iii. 15, 9.