The Roman History · Amm. 28.5.5

But when they, being now freed from all fear, were preparing to return, some of our infantry were sent forward, who secretly laid an ambuscade in a certain hidden defile, from which they would easily be able to attack them as they passed. But the matter turned out very differently from what was expected.

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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