History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
Meanwhile the Athenians in the hundred ships, who were still operating on the Peloponnesian coast, took Sollium, a town belonging to the Corinthians, which they then handed over, the territory as well as the city, to the people of Palaerus in Acarnania, for their exclusive occupation. They also stormed Astacus, which Euarchus ruled as tyrant, drove him out, and incorporated the place in their confederacy.
Sailing then to the island of Cephallenia, they brought it over to their side without a battle. Now Cephallenia lies over against Acarnania and Leucas and is a union of four communities, the Palians, Cranians, Samaeans, and Pronnians. And not long afterwards the ships withdrew to Athens.
Toward the autumn of this year the Athenians with all their military forces, drawn both from the citizens and the resident aliens, invaded Megaris under the command of Pericles son of Xanthippus, who was general.[*](i.e. one of the ten generals elected annually.)The Athenians of the fleet of one hundred ships operating around Peloponnesus, who happened to be at Aegina on their way home, when they heard that the whole military force of the city was at Megara, sailed over and joined them.