Histories

Then Darius wrote a letter to Megabazus, whom he had left as his general in Thrace (region (general)), EuropeThrace, bidding him take the Paeonians from their houses, and bring them to him, men, women, and children.

Immediately a horseman sped with this message to the Canakkale Bogazi (strait), Canakkale, Marmara, Turkey, Asia Hellespont, and upon crossing it, gave the letter to Megabazus, who, after reading it, took guides from Thrace (region (general)), EuropeThrace and led his army to Paeonia.

When the Paeonians learned that the Persians were coming against them, they gathered together and marched away to the sea, thinking that the Persians would attempt to attack them by that way.