History of the Peloponnesian War

and getting to the hill Thiamus, which is a desert hill, they marched over it and came down into Argeia when it was now night; and passing between the city of the Argives and the Arcarnanians that kept watch at [the] Wells, came unseen and joined with the Ambraciotes at Olpae.

When they were all together, they sat down about break of day at a place called Metropolis and there encamped. And the Athenians not long after with their twenty galleys arrived in the Ambracian gulf to the aid of the Argives, to whom also came Demosthenes with two hundred Messenian men of arms and threescore Athenian archers.