[Emperor Valens] was informed, that the North was agitated by a furious tempest; that the irruption of the Huns, an unknown and monstrous race of savages, had subverted the power of the Goths; and that the suppliant multitudes of that warlike nation, whose pride was now humbled in the dust, covered a space of many miles along the banks of the river.
With outstretched arms, and pathetic lamentations, they loudly deplored their past misfortunes and their present danger; acknowledged that their only hope of safety was in the clemency of the Roman government; and most solemnly protested, that if the gracious liberality of the emperor would permit them to cultivate the waste lands of Thrace, they should ever hold themselves bound, by the strongest obligations of duty and gratitude, to obey the laws, and to guard the limits, of the republic.
[...]
An undisciplined and unsettled nation of Barbarians required the firmest temper, and the most dexterous management. The daily subsistence of near a million of extraordinary subjects could be supplied only by constant and skilful diligence, and might continually be interrupted by mistake or accident. The insolence, or the indignation, of the Goths, if they conceived themselves to be the objects either of fear or of contempt, might urge them to the most desperate extremities
… a spirit of discontent insensibly arose in the camp of the Barbarians, who pleaded, without success, the merit of their patient and dutiful behavior; and loudly complained of the inhospitable treatment which they had received from their new allies. They beheld around them the wealth and plenty of a fertile province, in the midst of which they suffered the intolerable hardships of artificial famine. But the means of relief, and even of revenge, were in their hands; since the rapaciousness of their tyrants had left to an injured people the possession and the use of arms.
The migrants went on to kill Emperor Valens at the Battle of Adrianople.