But after reducing Milyas, and the greater part of Pamphylia, Achaeus took his departure, and arriving at Sardis kept up a continuous warfare with Attalus, and began threatening Prusias, and making himself an object of terror and alarm to all the inhabitants on this side Taurus. But while Achaeus was engaged on his expedition against Selge, Attalus with the Aegosagae from Gaul was going through all the cities in Aeolis, and the neighbourhood, which had before this been terrified into joining Achaeus; but most of which now voluntarily and even gratefully gave in their adherence to him, though there were some few which waited to be forced. Now the cities which transferred their allegiance to him in the first instance were Cyme, Smyrna, and Phocaea; after them Aegae and Temnus submitted, in terror at his approach; and thereupon he was waited upon by ambassadors from Teos and Colophon with offers to surrender themselves and their cities. He received them also upon the same terms as they had enjoyed before, taking hostages; but he treated the ambassadors from Smyrna with special kindness, because they had been the most constant in their loyalty of all. Continuing his march without interruption, he crossed the Lycus and arrived at the hamlets of Mysia, and thence came to Carseae. Overawing the inhabitants of this town, as well as the garrison of the Two Walls, he got them surrendered to him by Themistocles, who had been, as it happened, left by Achaeus in command of this district. Starting thence, and wasting the plain of Apia, he crossed Mount Pelecas and encamped near the river Megistus.