The Roman History · Amm. 31.15.4

And while the vast number of soldiers and grooms, who were prohibited from entering the city with their beasts, kept close to the walls and to the houses which joined them, and fought gallantly, considering the disadvantages under which they laboured from the lowness of the ground which they occupied, and baffled the rage of their assailants till the ninth hour of the day, on a sudden three hundred of our infantry, of those who were nearest the battlements, formed themselves into a solid body, and deserted to the barbarians, who seized upon them with avidity, and (it is not known on what account) at once slaughtered them all. And from that time forth it was remarked that no one, even in the extremity of despair, adopted any similar conduct.

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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