Which preposition to use with thermopylae

as Occurrences 2%

There was as much heroism in the struggles of the Dutch republic as in the wars of Napoleon; as much in our warfare for independence as in the suppression of the Southern rebellion; as much among Cromwell's soldiers as in the Crimean war; as much at Thermopylae as at Plataea.

in Occurrences 2%

The Roman fleet, which during the campaign in Greece was charged with the task of interrupting the communication between Greece and Asia Minor, and which had been successful about the time of the battle at Thermopylae in seizing a strong Asiatic transport fleet near Andros, was thenceforth employed in making preparations for the crossing of the Romans to Asia next year and first of all in driving the enemy's fleet out of the Aegean Sea.

with Occurrences 1%

They lost Athens, whose citadel they had besieged, but defeated the Turks in Thermopylae with great slaughter, which enabled them to reoccupy Athens and blockade the Acropolis.

Which preposition to use with  thermopylae