Description of Greece
Pausanias
Pausanias. Pausanias Description of Greece, Volumes 1-4. Jones, W.H.S. (William Henry Samuel), translator; Ormerod, Henry Arderne, translator. London, New York: W. Heinemann, G.P. Putnam's Sons, 1918-1935.
To meet the barbarians who came from the Ocean the following Greek forces came to Thermopylae. Of the Boeotians ten thousand hoplites and five hundred cavalry, the Boeotarchs being Cephisodotus, Thearidas, Diogenes and Lysander. From Phocis came five hundred cavalry with footmen three thousand in number. The generals of the Phocians were Critobulus and Antiochus.
The Locrians over against the island of Atalanta were under the command of Meidias; they numbered seven hundred, and no cavalry was with them. Of the Megarians came four hundred hoplites commanded by Hipponicus of Megara. The Aetolians sent a large contingent, including every class of fighting men; the number of cavalry is not given, but the light-armed were seven hundred and ninety, and their hoplites numbered more than seven thousand. Their leaders were Polyarchus, Polyphron and Lacrates.
The Athenian general was Callippus, the son of Moerocles, as I have said in an earlier part of my work,[*](Paus. 1.3.9 and Paus. 1.4.2.) and their forces consisted of all their seaworthy triremes, five hundred horse and one thousand foot. Because of their ancient reputation the Athenians held the chief command. The king of Macedonia sent five hundred mercenaries, and the king of Asia a like number; the leader of those sent by Antigonus was Aristodemus, a Macedonian, and Telesarchus, one of the Syrians on the Orontes, commanded the forces that Antiochus sent from Asia.
When the Greeks assembled at Thermopylae[*](279 B.C) learned that the army of the Gauls was already in the neighborhood of Magnesia and Phthiotis, they resolved to detach the cavalry and a thousand light armed troops and to send them to the Spercheius, so that even the crossing of the river could not be effected by the barbarians without a struggle and risks. On their arrival these forces broke down the bridges and by themselves encamped along the bank. But Brennus himself was not utterly stupid, nor inexperienced, for a barbarian, in devising tricks of strategy.
So on that very night he despatched some troops to the Spercheius, not to the places where the old bridges had stood, but lower down, where the Greeks would not notice the crossing, and just where the river spread over the plain and made a marsh and lake instead of a narrow, violent stream. Hither Brennus sent some ten thousand Gauls, picking out the swimmers and the tallest men; and the Celts as a race are far taller than any other people.
So these crossed in the night, swimming over the river where it expands into a lake; each man used his shield, his national buckler, as a raft, and the tallest of them were able to cross the water by wading. The Greeks on the Spercheius, as soon as they learned that a detachment of the barbarians had crossed by the marsh, forthwith retreated to the main army. Brennus ordered the dwellers round the Malian gulf to build bridges across the Spercheius, and they proceeded to accomplish their task with a will, for they were frightened of Brennus, and anxious for the barbarians to go away out of their country instead of staying to devastate it further.
Brennus brought his army across over the bridges and proceeded to Heracleia. The Gauls plundered the country, and massacred those whom they caught in the fields, but did not capture the city. For a year previous to this the Aetolians had forced Heracleia to join the Aetolian League; so now they defended a city which they considered to belong to them just as much as to the Heracleots.Brennus did not trouble himself much about Heracleia, but directed his efforts to driving away those opposed to him at the pass, in order to invade Greece south of Thermopylae.