The Roman History · Amm. 29.6.1

While Theodosius was thus exerting himself, and toiling in Mauritania and Africa, the nation of the Quadi was roused to make a sudden movement. It was a nation now not very formidable, but one which had formerly enjoyed vast renown for its warlike genius and power, as its achievements prove, some of which were distinguished for the rapidity, as well as for the greatness, of their success; instances are:—Aquileia, which was besieged by them and the Marcomanni; Opitergium, which was destroyed by them, and many other bloody successes which were gained in that rapid campaign when the Julian Alps were passed, and that illustrious emperor Marcus, of whom we have already spoken, was hardly able to offer them any resistance. And indeed they had, for barbarians, just ground of complaint.

Ammianus Marcellinus · translated by C. D. Yonge · 1911 reprint
C. D. Yonge translation (preface dated February 1862); G. Bell and Sons, 1911; Project Gutenberg #28587
Passage preview. Read in context for the complete text, notes and references.