Titus Livius (Livy), The History of Rome, Book 31
Evan T. Sage, Ph.D. Professor of Latin and Head of the Department of Classics in the University of Pittsburgh, Ed.

40. So the pass was won with less trouble than had been anticipated, and the consul marched to Eordaea, and after laying waste the country in all directions, proceeded toward Elimia. Then he made an attack on Orestis and assaulted the town of Celetrum, which lay on a peninsula; a lake surrounds its walls; a narrow tongue of land offers the only approach from the mainland. [2] At first the natives, relying on their position, closed the gates and refused the demand to surrender; [3] but when they saw the standards brought forward and the testudo advancing towards the gates and the isthmus filled with a throng of hostile troops, in panic they surrendered before they tried the issue of a battle. [4] From Celetrum he proceeded to the land of the Dassaretii and took the city of Pelium by storm. [5] He carried off the slaves from there with the rest of the booty, dismissed the freemen without ransom, and restored the town to them, leaving a strong garrison; for the town was favourably situated as a base for conducting raids into Macedonia. [6] So the consul, having traversed the enemy's country, led his troops back to the peaceful [p. 119]region around Apollonia, whence he had begun the¹ war.

[7] Philip was distracted by the Aetolians, the Athamanes and the Dardani and so many wars breaking out in one place after another. [8] Against the Dardani, who were by this time withdrawing from Macedonia, he sent Athenagoras with the light infantry and the greater part of the cavalry, with orders to press on them from behind as they withdrew, and by nibbling at their rearguard to make them less inclined to move their army from home. [9] Damocritus, the same president who had caused the delay in declaring war at Naupactus, had, at the next council, stirred up the Aetolians to war after they had heard of the cavalry battle at Ottolobum and the invasion of Macedonia by the Dardani and Pleuratus with the Illyrians, and, in addition, of the arrival of the Roman [10] fleet at Oreus and the naval blockade which threatened so many Macedonian cities on the coast.