History of the Peloponnesian War

There were more slaves at Chios than in any one other city except Lacedaemon, and being also by reason of their numbers punished more rigorously when they offended, most of them when they saw the Athenian armament firmly established in the island with a fortified position, immediately deserted to the enemy, and through their knowledge of the country did the greatest mischief.

The Chians therefore urged upon Astyochus that it was his duty to assist them, while there was still a hope and a possibility of stopping the enemy's progress, while Delphinium was still in process of fortification and unfinished, and before the completion of a higher rampart which was being added to protect the camp and fleet of their besiegers. Astyochus now saw that the allies also wished it and prepared to go, in spite of his intention to the contrary owing to the threat already referred to.

In the meantime news came from Caunus of the arrival of the twenty-seven ships with the Lacedaemonian commissioners; and Astyochus postponing everything to the duty of convoying a fleet of that importance, in order to be more able to command the sea, and to the safe conduct of the Lacedaemonians sent as spies over his behaviour, at once gave up going to Chios and set sail for Caunus.

As he coasted along he landed at the Meropid Cos and sacked the city, which was unfortified and had been lately laid in ruins by an earthquake, by far the greatest in living memory, and, as the inhabitants had fled to the mountains, overran the country and made booty of all it contained, letting go, however, the free men.

From Cos arriving in the night at Cnidus he was constrained by the representations of the Cnidians not to disembark the sailors, but to sail as he was straight against the twenty Athenian vessels, which with Charminus, one of the commanders at Samos, were on the watch for the very twenty-seven ships from Peloponnese which Astyochus was himself sailing to join;