Such were the instructions given to Krateros; but half-way between the island and the main camp in which he had been left, there were posted Meleager, Attalos and Gorgias, with the mercenary cavalry and infantry, who had received orders to cross to the other side in detachments, into which their ranks were to be separated as soon as they saw the Indians fairly engaged in battle. He then selected to be taken under his own command the corps of body-guards called Companions, the regiments of cavalry under Hêphaistiôn, Perdikkas and Dêmêtrios, also the Baktrian, Sogdian, and Skythian cavalry, and the Daan horse-archers, and from the phalanx of infantry the hypaspists, the brigade of Kleitos and Koinos, and the archers and the Agrianians, and with these troops he marched with secrecy, keeping at a considerable distance from the bank that he might not be seen to be moving towards the island and the bluff, from which he intended to cross over to the other side. There in the night the skins, which had long before been provided for the purpose, were stuffed with hay, and securely stitched up. During the night a violent storm of rain came on, whereby his preparations and the attempt at crossing were not betrayed to the enemy by the rattle of arms and the shouting of orders, since the thunder and rain drowned all other sounds. Most of the boats which he had ordered to be cut into sections had been conveyed to this place, and when secretly pieced together again were hidden away in the woods along with the thirty-oared galleys. Towards daybreak the wind had died down and the rain ceased. The rest of the army then crossed over in the direction of the island, the cavalry mounted on the skin pontoon rafts, and as many of the foot-soldiers as the boats could hold embarked in them. They so proceeded, that they were not seen by the sentries posted by Pôros till they had passed beyond the island, and were not far from the bank. _Chapter XIII.—Incidents of the passage of the river_