Ammianus Marcellinus Res Gestae 31.12.1

[1] In those same days Valens was troubled for two reasons: first, by the news that the Lentienses had been defeated; secondly, because Sebastianus wrote from time to time exaggerating his exploits. He therefore marched forth from Melanthias, being eager to do some glorious deed to equal his young nephew, whose valiant exploits consumed him with envy. ¹ He had under his command a force made up of varying elements, but one neither contemptible, nor unwarlike; for he had joined with them also a large number of veterans, among whom were other officers of high rank and Trajanus, shortly before a commander-in-chief, whom he had recalled to active service.