The Roman History · Amm. 16.12.39

For as he was at once recognized by his purple standard of the dragon, which was fixed to the top of a long spear, waving its fringe as a real dragon sheds its skin, the tribune of one squadron halted, and turning pale with alarm, hastened back to renew the battle.

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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