History of the Peloponnesian War

Such was the plot in contemplation. Hippocrates with a force raised at home awaited the proper moment to take the field against the Boeotians; while he sent on Demosthenes with the forty ships above mentioned to Naupactus, to raise in those parts an army of Acarnanians and of the other allies, and sail and receive Siphae from the conspirators; a day having been agreed on for the simultaneous execution of both these operations.

Demosthenes on his arrival found Oeniadae already compelled by the united Acarnanians to join the Athenian confederacy, and himself raising all the allies in those countries marched against and subdued Salynthius and the Agraeans; after which he devoted himself to the preparations necessary to enable him to be at Siphae by the time appointed.