From this moment, the battle, though it had lasted so short a time, was irreparably lost. The king’s flight, followed of course immediately by that of the numerous attendants around him, spread dismay among all his troops, leaving them neither centre of command, nor chief to fight for. The best soldiers in his army, being those immediately around him, were under these circumstances the first to give way. The fierce onset of Alexander with the Companion-cavalry, and the unremitting pressure of the phalanx in front was obstructed by little else than a mass of disordered fugitives. During the same time, Aretes with his Pæonians had defeated the Baktrians on the right flank,[390] so that Alexander was free to pursue the routed main body,—which he did most energetically. The cloud of dust raised by the dense multitude is said to have been so thick, that nothing could be clearly seen, nor could the pursuers distinguish the track taken by Darius himself. Amidst this darkness, the cries and noises from all sides were only the more impressive; especially the sound from the whips of the charioteers, pushing their horses to full speed.[391] It was the dust alone which saved Darius himself from being overtaken by the pursuing cavalry. [390] Arrian, iii. 14, 4. [391] Diodor. xvii. 60; Curtius, iv. 15, 32, 33. The cloud of dust, and the noise of the whips, are specified both by Diodorus and Curtius. While Alexander was thus fully successful on his right and centre, the scene on his left under Parmenio was different. Mazæus, who commanded the Persian right, after launching his scythed chariots (which may possibly have done more damage than those launched on the Persian left, though we have no direct information about them), followed it up by vigorously charging the Grecian and Thessalian horse in his front, and also by sending round a detachment of cavalry to attack them on their left flank.[392] Here the battle was obstinately contested, and success for some time doubtful. Even after the flight of Darius, Parmenio found himself so much pressed, that he sent a message to Alexander. Alexander, though full of mortification at relinquishing the pursuit, checked his troops, and brought them back to the assistance of his left, by the shortest course across the field of battle. The two left divisions of the phalanx, under Simmias and Kraterus, had already stopped short in the pursuit, on receiving the like message from Parmenio; leaving the other four divisions to follow the advanced movement of Alexander.[393] Hence there arose a gap in the midst of the phalanx, between the four right divisions, and the two left; into which gap a brigade of Indian and Persian cavalry darted, galloping through the midst of the Macedonian line to get into the rear and attack the baggage.[394] At first this movement was successful, the guard was found unprepared, and the Persian prisoners rose at once to set themselves free; though Sisygambis,