The Roman History · Amm. 31.16.6

But a strange and unprecedented incident gave the final advantage to the eastern warriors; for one of them with long hair, naked—with the exception of a covering round his waist—shouting a hoarse and melancholy cry, drew his dagger and plunged into the middle of the Gothic host, and after he had slain an enemy, put his lips to his throat, and sucked his blood. The barbarians were terrified at this marvellous prodigy, and from that time forth, when they proceeded on any enterprise, displayed none of their former and usual ferocity, but advanced with hesitating steps.

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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