History of the Peloponnesian War

And they delivered unto them their dead, and having erected a trophy took up their own dead, which were about three hundred. But for their departure they would make no truce openly [nor] to all; but secretly Demosthenes with his Acarnanian fellow-commanders made a truce with the Mantineans, and with Menedaius and the rest of the Peloponnesian captains and men of most worth, to be gone as speedily as they could, with purpose to disguard the Ambraciotes and multitude of mercenary strangers, and withal to use this as a means to bring the Peloponnesians into hatred with the Grecians of those parts as men that had treacherously advanced their particular interest.

Accordingly they took up their dead, and buried them as fast as they could; and such as had leave consulted secretly touching how to be gone.

Demosthenes and the Acarnanians had now intelligence that the Ambraciotes from the city of Ambracia, according to the message sent to them before from Olpae [which was that they should bring their whole power through Amphilochia to their aid], were already on their march (ignorant of what had passed here) to join with those at Olpae.

And hereupon he sent a part of his army presently forth to beset the ways with ambushment and to pre-occupy all places of strength, and prepared withal to encounter with the rest of his army.