The Roman History · Amm. 26.7.15

And when the legions, being now prepared for battle, assembled there, and while both sides were exchanging missiles as if wishing to provoke an attack, Procopius advanced by himself into the middle, and under the guidance of favourable fortune, he remarked in the opposite ranks a man named Vitalianus (it is uncertain whether he had known him before), and having given him his hand and embraced him, he said, while both armies were equally astonished.

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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