The Roman History · Amm. 27.5.4

Therefore, that he might not waste the whole summer, and return without having effected anything, he sent forward Arinthæus, the captain of the infantry, with some light forces, who seized on a portion of their families, which were overtaken as they were wandering over the plains before coming to the steep and winding defiles of the mountains. And having obtained this advantage, which chance put in his way, he returned with his men without having suffered any loss, and indeed without having inflicted any.

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
Passage preview. Read in context for the complete text, notes and references.