While the revolutionary passions thus for the first time displayed themselves in the factions of Corcyra, Eurymedon and the Athenian fleet sailed away; after which some five hundred Corcyraean exiles who had succeeded in escaping, took some forts on the mainland, and becoming masters of the Corcyraean territory over the water, made this their base to Plunder their countrymen in the island, and did so much damage as to cause a severe famine in the town. They also sent envoys to Lacedaemon and Corinth to negotiate their restoration; but meeting with no success, afterwards got together boats and mercenaries and crossed over to the island, being about six hundred in all; and burning their boats so as to have no hope except in becoming masters of the country, went up to Mount Istone, and fortifying themselves there, began to annoy those in the city and obtained command of the country.
At the close of the same summer the Athenians sent twenty ships under the command of Laches, son of Melanopus, and Charoeades, son of Euphiletus, to Sicily, where the Syracusans and Leontines were at war. The Syracusans had for allies all the Dorian cities except Camarina—these had been included in the Lacedaemonian confederacy from the commencement of the war, though they had not taken any active part in it—the Leontines had Camarina and the Chalcidian cities. In Italy the Locrians were for the Syracusans, the Rhegians for their Leontine kinsmen. The allies of the Leontines now sent to Athens and appealed to their ancient alliance and to their Ionian origin, to persuade the Athenians to send them a fleet, as the Syracusans were blockading them by land and sea. The Athenians sent it upon the plea of their common descent, but in reality to prevent the exportation of Sicilian corn to Peloponnese and to test the possibility of bringing Sicily into subjection. Accordingly they established themselves at Rhegium in Italy, and from thence carried on the war in concert with their allies.