The Roman History · Amm. 18.2.8

But all the Allemanni who were the objects of our attack, seeing the danger now on their borders, with many threats urged Surmarius their king, who by a previous treaty was on friendly terms with us, to prevent the Romans from crossing the river. For their villages were on the eastern bank of the Rhine. But when Surmarius affirmed that he by himself was unable to offer effectual resistance, the barbarian host assembled in a body, and came up to Mayence, intending by main force to prevent our army from crossing the river.

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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