Res Gestae
Ammianus Marcellinus
Ammianus Marcellinus. Ammianus Marcellinus, with an English translation, Vols. I-III. Rolfe, John C., translator. Cambridge, MA; London: Harvard University Press; W. Heinemann, 1935-1940 (printing).
And at last, after turning over many plans, we resolved upon a plan which speedy action made the safer, namely, to oppose four scorpions[*](The scorpion was an engine for hurling stones, also called onager, wild ass. It is described in xxiii. 4, 4 ff.) to those same ballistae; but while they were being moved exactly opposite and cautiously put in place (an act calling for the greatest skill) the most sorrowful of days dawned upon us, showing as it did formidable bands of Persians along with troops of elephants, than whose noise and huge bodies the human mind can conceive nothing more terrible.
And while we were hard pressed on every side by weight of armed men, siege-works, and monsters, round stones hurled at intervals from the battlements by the iron arms of our scorpions shattered
For even the king of the Persians himself, who is never compelled to take part in battles, aroused by these storms of ill-fortune, rushed into the thick of the fight like a common soldier (a new thing, never before heard of) and because he was more conspicuous even to those who looked on from a distance because of the throng of his body-guard, he was the mark of many a missile; and when many of his attendants had been slain he withdrew, interchanging the tasks of his tractable forces, and at the end of the day, though terrified by the grim spectacle neither of the dead nor of the wounded he at last allowed a brief time to be given to rest.
But night put an end to the conflict; and having taken a nap during the brief period of rest,