Res Gestae
Ammianus Marcellinus
Ammianus Marcellinus. Ammianus Marcellinus, with an English translation, Vols. I-III. Rolfe, John C., translator. Cambridge, MA; London: Harvard University Press; W. Heinemann, 1935-1940 (printing).
Well then, let the old tales revive of bringing the Medic hordes to Greece; for while they describe the bridging of the Hellespont, the quest of a sea at the foot of Mount Athos by a kind of mechanical severing,[*](I.e., cutting a canal through the isthmus of the peninsula on which the mountain stands.) and the numbering of the armies by squadrons at Doriscus,[*](Because they were too numerous to be counted as individuals, an enclosure which would hold 10,000 closely packed men was built; see Hdt. vii. 60.) later times have unanimously regarded all this as fabulous reading.
For after the countless swarms of nations were poured through the provinces, spreading over a great extent of plain and filling all regions and every mountain height, by this new evidence the trustworthiness also of old stories was confirmed. First Fritigern and Alavivus were received, and the emperor gave orders that they should be given food for their present needs and fields to cultivate.