Zosimus, New History 1.43

Zosimus (Greek Ζώσιμος): Early Byzantine, pagan author of a history of the Roman Empire, published in the first quarter of the sixth century CE.

The translation of Zosimus' New History offered here was printed in 1814 by W. Green and T. Chaplin in London, and was probably prepared by J. Davis of the Military Chronicle and Military Classics Office. The translator is anonymous. The text was found at Tertullian.org. The notes were added by Jona Lendering.

[1.43.1] On this account the barbarians departed from the Propontis, and sailed towards Cyzicus. Being obliged to return from thence without success, they passed through the Hellespont, and arrived at Mount Athos. Having there refitted and careened their vessels, they laid siege to Cassandria and Thessalonica, which they were near taking by means of machines which they raised against the walls. But hearing that the emperor was advancing with an army, they went into the interior, plundering all the neighborhood of Doberus and Pelagonia. 

[1.43.2] There they sustained a loss of three thousand men, who were met with by the Dalmatian cavalry, and with the rest of their force engaged the army of the emperor. Great numbers were slain in this battle on both sides, but the Romans, by a pretended flight, drew the barbarians into an ambuscade and killed more than fifty thousand of them. The remainder of the Scythians sailed round Thessaly and Greece to pillage all the country, and as they were not strong enough to attack the towns which had fortified themselves, and provided for their own security, they carried off all the men that they found in the open country.