Titus Livius (Livy), The History of Rome, Book 28
Frank Gardener Moore, Professor Emeritus in Columbia University, Ed.

6. In four days after the fleet came in they attacked the city. That time was spent in secret conversations with Plator, who had been put in command of the city by Philip. [2] The place has two citadels, one overhanging the sea; the other is in the centre of the city. From it a road leads down to the sea through a tunnel, and at [p. 23]the seaward end a tower having fie stories, a¹ remarkable defensive work, used to close the road. [3] There at first a very fierce engagement began, for the tower was provided with missiles of every kind, while artillery also and engines had been landed from the ships for an attack upon it. [4] When that conflict had diverted the attention and the eyes of all, Plator admitted the Romans through a gate in the citadel by the sea, and in an instant the citadel was seized. [5] The citizens being repulsed hastened to the heart of the city and the other citadel; and men had been posted there to close the gates. Being thus shut out they were surrounded and slain or captured. [6] The Macedonian garrison stood in a mass under the wall of the citadel, having neither taken to flight in disorder nor gone into battle with determination. [7] Plator, having gained permission from Sulpicius, embarked his men and landed them at Demetrium² in Phthiotis, while he himself joined Attalus.

[8] Sulpicius, inspired by a success so easily won at Oreum, sailed thence with his victorious fleet directly to Chalcis, where the result by no means matched his expectation. [9] The sea, which from a wide expanse on both sides is narrowed into a strait, might give one at first sight the appearance of a double harbour facing two entrances. But hardly any other anchorage is more dangerous for a fleet. [10] For sudden, squally winds blow down from very high mountains on either shore, and also the Euripus strait itself does not reverse its direction seven times a day at [p. 25]fixed times,³ as report has it, but with a current that⁴ like the wind changes irregularly, now this way, now that, it races along as a torrent dashes down from a steep mountain. Thus neither by night nor by day are ships given rest. [11] Not only was the anchorage into which the fleet came so dangerous, but in addition the town was strong and impregnable, being protected on one side by the sea, on the other side, towards the land, extraordinarily fortified and secured by a strong garrison and in particular by the loyalty of its commanders and leading citizens, a quality which at Oreum had been uncertain and delusive. [12] It was wise on the part of the Roman, considering his rash undertaking, that after surveying the difficulties, in order not to waste time for nothing, he promptly gave up the attempt and with his fleet crossed over to Cynus in Locris, the mart of the city of Opus, which is situated a mile from the sea.⁵