The Roman History · Amm. 29.5.44

From thence Theodosius proceeded into the interior, and with great resolution attacked the tribe of the Jubileni, to which he heard that Nubel, the father of Firmus, belonged; but presently he halted, being checked by the height of the mountains, and their winding defiles. And though he had once attacked the enemy, and opened himself a further road by slaying a great number of them, still, fearing the high precipices as places pre-eminently adapted for ambuscades, he withdrew, and led back his army in safety to a fortress called Audiense, where the Jesalenses, a warlike tribe, came over to him, voluntarily promising to furnish him with reinforcements and provisions.

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.