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.
During the following summer the Peloponnesians [*](427 B. C.) first despatched the forty ships which they had promised to Mytilene, appointing in command of them Alcidas, who was the Lacedaemonian admiral, and then invaded Attica, themselves and their allies, in order that the Athenians, threatened on both sea and land, might be deterred from sending a force to attack the fleet that was on its
way to Mytilene. The leader of this invasion was Cleomenes, regent for his nephew Pausanias son of Pleistoanax, who was king but