The Persians had for their own safety appointed the Milesians to watch the passes, so that if anything should happen to the Persian army such as did happen to it, they might have guides to bring them safely to the heights of Mykale. This was the task to which the Milesians were appointed for the reason mentioned above and so that they might not be present with the army and so turn against it. They acted wholly contrary to the charge laid upon them; they misguided the fleeing Persians by ways that led them among their enemies, and at last they themselves became their worst enemies and killed them. In this way Ionia revolted for the second time from the Persians.