Craterus and Ptolemy also to form a junction with him at the same place. CHAPTER VI. CAMPAIGN AGAINST THE MALLIANS. He then took the shield-bearing guards, the bowmen, the Agrianians, Peithon’s brigade of men, who were called foot Companions, all the horse bowmen and half the cavalry Companions, and marched through a tract of country destitute of water against the Mallians, a tribe of the independent Indians.[741] On the first day he encamped near a small piece of water which was about 100 stades distant from the river Acesines. Having dined there and caused his army to rest a short time, he ordered every man to fill whatever vessel he had with water. After travelling the remaining part of that day and all the ensuing night a distance of about 400 stades, he at daybreak reached the city into which many of the Mallians had fled for refuge. Most of them were outside the city and unarmed, supposing that Alexander would never come against them through the waterless country. It was evident that he led his army by this route for this very reason, because it was difficult to lead an army this way, and consequently it appeared incredible to the enemy that he would lead his forces in this direction. He therefore fell upon them unexpectedly, and killed most of them without their even turning to defend themselves, since they were unarmed. He cooped the rest up in the city, and posted his cavalry all round the wall, because the phalanx of infantry had not yet[742] come up with him. He thus made use of his cavalry in place of a stockade. As soon as the infantry arrived, he sent Perdiccas with his own cavalry regiment and that of Clitus, as well as the Agrianians, against another city of the Mallians, whither many of the Indians of that region had fled for refuge. He ordered Perdiccas to blockade the men in the city, but not to commence the action until he himself should arrive, so that none might escape from this city and carry news to the rest of the barbarians that Alexander was already approaching. He then began to assault the wall; but the barbarians abandoned it, finding that they were no longer able to defend it, since many had been killed in the capture, and others had been rendered unfit for fighting on account of their wounds. Fleeing for refuge into the citadel, they defended themselves for some time from a position commanding from its height and difficult of access. But as the Macedonians pressed on vigorously from all sides, and Alexander himself appeared now in this part of the action and now in that, the citadel was taken by storm, and all the men who had fled into it for refuge were killed, to the number of 2,000. Perdiccas also reached the city to which he had been despatched and found it deserted; but learning that the inhabitants had fled from it not long before, he made a forced march on the track of the fugitives. The light-armed troops followed him as quickly as they could on foot,