The Roman History · Amm. 19.11.14

And because in their fiery valour our men were resolved to wipe out disgrace by glory, and were full of anger at the treachery of the foe, they slew every one whom they met without mercy, trampling all under foot, living, wounded, and dead alike; so that heaps of dead were piled up before their hands were weary of the slaughter. For the rebels were completely overwhelmed, some being slain, and others fleeing in fear, many of whom implored their lives with various entreaties, but were slaughtered with repeated wounds. And when, after they were all destroyed, the trumpets sounded a retreat, it was found that only a very few of our men were killed, and these had either been trampled down at first, or had perished from the insufficiency of their armour to resist the violence of the enemy.

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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