The Roman History · Amm. 25.6.14

And men were selected suited to such an enterprise, who from their childhood had been accustomed in their native land to cross the greatest rivers. And when the darkness of night presented an opportunity for making the attempt unperceived, as if they had just escaped from a prison, they reached the opposite bank sooner than could have been expected; and having beaten down and slain numbers of the Persians whom, though they had been placed there to guard the passage, their fancied security had lulled into a gentle slumber, they held up their hands, and shook their cloaks so as to give the concerted signal that their bold attempt had succeeded.

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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