All that we know of the Ephthalites is, that they were established in force, during the fifth and sixth centuries of our era, in the regions east of the Caspian, especially in those beyond the Oxus river, and that they were generally regarded as belonging to the Scythic or Finno-Turkic population, which, at any rate from B.C.200, had become powerful in that region.

They were called "White Huns" by some of the Greeks; but it is admitted that they were quite distinct from the Huns who invaded Europe under Attila; and it may be doubted whether the term "Hun" is more appropriate to them than that of Turk or even of Chinese.

The description of their physical character and habits left us by Procopius, who wrote when they were at the height of their power, is decidedly adverse to the view that they were really Huns.

They were a light-complexioned race, whereas the Huns were decidedly swart; they were not ill-looking, whereas the Huns were hideous; they were an agricultural people, while the Huns were nomads; they had good laws, and were tolerably well civilized, but the Huns were savages.

It is probable that they belonged to the Thibetic or Turkish stock, which has always been in advance of the Finnic, and has shown a greater aptitude for political organization and social progress.
We are told that the war of Varahran V.with this people commenced with an invasion of his kingdom by their Khacan, or Kahn, who crossed the Oxus with an army of 35,000 (or, according to others, of 250,000) men, and carried fire and sword into some of the most fertile provinces of Persia.