The Roman History · Amm. 19.11.16

After these blood-stained transactions, Constantius took what precautions prudence suggested for the security of his frontiers, and then returned to Sirmium, having avenged himself on the perfidity of his enemies. And having there settled everything which the occasion required, he quitted Sirmium and went to Constantinople, that by being nearer to the East, he might remedy the disasters which had been sustained at Amida, and having reinforced his army with new levies, he might check the attempts of the king of Persia with equal vigour; as it was clear that Sapor, if Providence and some more pressing occupation did not prevent him, would leave Mesopotamia and bring the war over the plains on this side of that country.

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
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