Titus Livius (Livy), The History of Rome, Book 32
Cyrus Evans, Ed.

13. Next day, the consul pursued the enemy through the same defiles through which the river winds its way among the valleys. [2] The king came on the first day to the camp of Pyrrhus, a place so called in Triphylia, a district of Melotis; and on the following day he reached Mount Lingos, an immense march for his army, but his fear impelled him. [3] This ridge of mountains belongs to Epirus, and stretches along between Macedonia and Thessaly; the side next to Thessaly faces the east, that next to Macedonia the north. These hills are thickly clad with woods, and on their summits have open plains and perennial streams. [4] Here Philip remained encamped for several days, being unable to determine whether [p. 1408]he should continue his retreat until he arrived in his own dominions, or whether he might venture back into Thessaly. At length, his decision leaned to leading down his army into Thessaly; [5] and, going by the shortest roads to Tricca, he made hasty excursions from thence to all the cities within his reach. [6] The inhabitants who were able to accompany him, he summoned from their habitations, and burned the towns, allowing the owners to take with them such of their effects as they were able to carry; the rest became the prey of the soldiers; nor was there any kind of cruelty which they could have suffered from an enemy, that they did not suffer from these their confederates. [7] These acts were painful to Philip even while he executed them; [8] but as the country was soon to become the property of the foe, he wished to rescue out of it at least the persons of his allies. In this manner were ravaged the towns of Phacium, Iresiae, Euhydrium, Eretria, and Palaepharsalus. [9] On his coming to Pherae, the gates were shut against him, and as it would necessarily occasion a considerable delay if he attempted to take it by force, and as he could not spare time, he dropped the design, and crossed over the mountains into Macedonia; for he had received intelligence, that the Aetolians too were marching towards him. [10] These, on hearing of the battle fought on the banks of the river of Aous, first laid waste the nearest tracts round Sperchia, and Long Come, as they call it, and then, passing over into Thessaly, got possession of Cymine and Angeae at the first assault. [11] From Metropolis they were repulsed by the inhabitants, who, while a part of their army was plundering the country, assembled in a body to defend the city. Afterwards, making an attempt on Callithera, they were attacked by the townsmen in a like manner; [12] but withstood their onset with more steadiness, drove back into the town the party which had sallied, and content with that success, as they had no prospect whatever of taking the place by storm, retired. [13] They then took by assault and sacked the towns of Theuma and Calathas. Acharrae they gained by surrender. [14] Xyniae, through similar apprehensions, was abandoned by the inhabitants. These having forsaken their homes, and going together in a body, fell in with a party which was being marched to Thaumacus for the purpose of protecting their foragers; all of whom, an irregular and unarmed multitude, [p. 1409]incapable of any resistance, were put to the sword by the troops. The deserted town of Xyniae was plundered. The Aetolians then took Cyphara, a fort conveniently situated on the confines of Dolopia. [15] All this the Aetolians performed within the space of a few days.