Cyrus determined to adopt the plan which Croesus thus recommended. He accordingly gave answer to the embassadors of Tomyris that he would accede to the first of her proposals. If she would draw back from the river three days' march, he would cross it with his army as soon as practicable, and then come forward and attack her. The embassadors received this message, and departed to deliver it to their queen. She was faithful to her agreement, and drew her forces back to the place proposed, and left them there, encamped under the command of her son. Cyrus seems to have felt some forebodings in respect to the manner in which this expedition was to end. He was advanced in life, and not now as well able as he once was to endure the privations and hardships of such campaigns. Then, the incursion which he was to make was into a remote, and wild, and dangerous country and he could not but be aware that he might never return. Perhaps he may have had some compunctions of conscience, too, at thus wantonly disturbing the peace and invading the territories of an innocent neighbor, and his mind may have been the less at ease on that account. At any rate, he resolved to settle the affairs of his government before he set out, in order to secure both the tranquillity of the country while he should be absent, and the regular transmission of his power to his descendants in case he should never return. Accordingly, in a very formal manner, and in the presence of all his army, he delegated his power to Cambyses, his son, constituting him regent of the realm during his absence. He committed Croesus to his son's special care, charging him to pay him every attention and honor. It was arranged that these persons, as well as a considerable portion of the army, and a large number of attendants that had followed the camp thus far, were not to accompany the expedition across the river, but were to remain behind and return to the capital. These arrangements being all thus finally made, Cyrus took leave of his son and of Croesus, crossed the river with that part of the army which was to proceed, and commenced his march. The uneasiness and anxiety which Cyrus seems to have felt in respect to his future fate on this memorable march affected even his dreams. It seems that there was among the officers of his army a certain general named Hystaspes. He had a son named Darius, then a youth of about twenty years of age, who had been left at home, in Persia, when the army marched, not being old enough to accompany them. Cyrus dreamed, one night, immediately after crossing the river, that he saw this young Darius with wings on his shoulders, that extended, the one over Asia and the other over Europe, thus overshadowing the world. When Cyrus awoke and reflected upon his dream, it seemed to him to portend that Darius might be aspiring to the government of his empire. He considered it a warning intended to put him on his guard.