History of the Peloponnesian War

Now Demosthenes, the Athenian (for ever since the Aetolian business he abode about Naupactus), having been pre-advertised of this army and being afraid to lose the city, went amongst the Acarnanians and with much ado, because of his departure from before Leucas, persuaded them to relieve Naupactus;

and they sent along with him in his galleys a thousand men of arms. Which entering were the preservation of the city;

for there was danger, the walls being of a great compass and the defendants few, that else they should not have been able to make them good. Eurylochus and those that were with him, when they perceived that those forces were entered and that it was impossible to take the city by assault, departed thence not into Peloponnesus but to Aeolis, now called Calydon, and to Pleuron and other places thereabouts, and also to Proschion in Aetolia.