Aratus waited two days: and then, foolishly believing that the Aetolians would return by the route they had indicated, he dismissed all the Achaeans and Lacedaemonians to their homes, except three thousand foot and three hundred horse and the division under Taurion, which he led to Patrae, with the view of keeping on the flank of the Aetolians. But when Dorimachus learnt that Aratus was thus watching his march, and was still under arms; partly from fear of being attacked when his forces were engaged on the embarkation, and partly with a view to confuse the enemy, he sent his booty on to the transports with a sufficient number of men to secure their passage, under orders to meet him at Rhium where he intended to embark; while he himself, after remaining for a time to superintend and protect the shipment of the booty, changed the direction of his march and advanced towards Olympia. But hearing that Taurion, with the rest of the army, was near Cleitoria; and feeling sure that in these circumstances he would not be able to effect the crossing from Rhium without danger and a struggle with the enemy; he made up his mind that it would be best for his interests to bring on an engagement with the army of Aratus as soon as possible, since it was weak in numbers and wholly unprepared for the attack. He calculated that if he could defeat this force, he could then plunder the country, and effect his crossing from Rhium in safety, while Aratus was waiting and deliberating about again convoking the Achaean levy; but if on the other hand Aratus were terrified and declined the engagement, he would then effect his departure unmolested, whenever he thought it advisable. With these views, therefore, he advanced, and pitched his camp at Methydrium in the territory of Megalopolis.