Alexander, perplexed how to cross the river, at last devised a plan for duping the enemy. In the river lay an island larger than the rest, wooded and suitable for concealing an ambuscade. A deep hollow, moreover, which lay not far from the bank in his own occupation, was capable of hiding not only foot-soldiers but mounted cavalry. To divert, therefore, the attention of the enemy from a place possessing such advantages, he ordered Ptolemy with all his squadrons of horse to ride up and down at a distance from the island in view of the enemy, and now and then to alarm the Indians by shouting, as if he meant to make the passage of the river.[244] For several days Ptolemy repeated this feint, and thus obliged Porus to concentrate his troops at the point which he pretended to threaten. The island was now beyond view of the enemy.[245] Alexander then gave orders that his own tent should be pitched on a part of the bank looking the other way, that the guard of honour which usually attended him should be posted before it, and that all the pageantry of royal state should be paraded before the eyes of the enemy on purpose to deceive them. He besides requested Attalus, who was about his own age, and not unlike him in form and feature, especially when seen from a distance, to wear the royal mantle, and so make it appear as if the king in person was guarding that part of the bank without any intention of crossing the river. The state of the weather at first hindered, but afterwards favoured, the execution of this design, fortune making even untoward circumstances turn out to his ultimate advantage. For when the enemy was busy watching the troops under Ptolemy which occupied the bank lower down, and Alexander with the rest of his forces was making ready to cross the river and reach the land over against the island already mentioned, a storm poured down torrents of rain, against which even those under cover could scarcely protect themselves. The soldiers, overcome by the fury of the elements, deserted the boats and ships, and fled back for safety to land, but the din occasioned by their hurry and confusion could not be heard by the enemy amid the roar of the tempest. All of a sudden the rain then ceased, but clouds so dense overspread the sky that they hid the light, and made it scarcely possible for men conversing together to see each other’s faces.