Croesus, in fact, seems to have considered that he was fortunate in having so far repulsed the formidable invasion which Cyrus had been intending for him. He considered Cyrus's army as repulsed, since they had withdrawn from the field, and showed no disposition to return to it. He had no doubt that Cyrus would now go back to Media again, having found how well prepared Croesus had been to receive him. For himself, he concluded that he ought to be satisfied with the advantage which he had already gained, as the result of one campaign, and return again to Sardis to recruit his army, the force of which had been considerably impaired by the battle, and so postpone the grand invasion till the next season. He accordingly set out on his return. He dispatched messengers, at the same time, to Babylon, to Sparta, to Egypt, and to other countries with which he was in alliance, informing these various nations of the great battle of Pteria and its results, and asking them to send him, early in the following spring, all the re-enforcements that they could command, to join him in the grand campaign which he was going to make the next season.
He continued his march homeward without any interruption, sending off, from time to time, as he was moving through his own dominions, such portions of his troops as desired to return to their homes, enjoining upon them to come back to him in the spring. By this temporary disbanding of a portion of his army, he saved the expense of maintaining them through the winter.
Very soon after Croesus arrived at Sardis, the whole country in the neighborhood of the capital was thrown into a state of universal alarm by the news that Cyrus was close at hand. It seems that Cyrus had remained in the vicinity of Pteria long enough to allow Croesus to return, and to give him time to dismiss his troops and establish himself securely in the city. He then suddenly resumed his march, and came on toward Sardis with the utmost possible dispatch. Croesus, in fact, had no announcement of his approach until he heard of his arrival.
All was now confusion and alarm, both within and without the city. Croesus hastily collected all the forces that he could command. He sent immediately to the neighboring cities, summoning all the troops in them to hasten to the capital. He enrolled all the inhabitants of the city that were capable of bearing arms. By these means he collected, in a very short time, quite a formidable force, which he drew up, in battle array, on a great plain not far from the city, and there waited, with much anxiety and solicitude, for Cyrus to come on.