Potidaea, as far as we know), never having fought against walls before.
And taking with them the money and leading away one hundred and twenty
thousand captives, they all retired homeward without encountering any
opposition. In later times too they often came there and brought upon
the Romans irreparable calamity. This same people also assailed the wall
of the Chersonesus, where they overpowered those who were defending
themselves from the wall, and approaching through the surf of the sea,
scaled the fortifications on the so-called Black Gulf; thus they got
within the long wall, and falling unexpectedly upon the Romans in the
Chersonesus they slew many of them and made prisoners of almost all the
survivors. Some few of them also crossed the strait between Sestus and
Abydus, and after plundering the Asiatic country, they returned again to
the Chersonesus, and with the rest of the army and all the booty betook
themselves to their homes. In another invasion they plundered Illyricum
and Thessaly and attempted to storm the wall at Thermopylae; and since
the guards on the walls defended them most valiantly, they sought out
the ways around and unexpectedly found the path which leads up the
mountain which rises there[3]. In this way they destroyed almost all the
Greeks except the Peloponnesians, and then withdrew. And the Persians
not long afterwards broke off the treaty and wrought such harm to the
Romans of the East as I shall set forth immediately.

Belisarius, after humbling Vittigis, the king of the Goths and Italians,
brought him alive to Byzantium. And I shall now proceed to tell how the
army of the Persians invaded the land of the Romans. When the Emperor
Justinian perceived that Chosroes was eager for war, he wished to offer
him some counsel and to dissuade him from the undertaking. Now it
happened that a certain man had come to Byzantium from the city of
Daras, Anastasius by name, well known for his sagacity; he it was who
had broken the tyranny which had been established recently in Daras.