Pliny the Younger (A.D. 62?–c.A.D. 113). Letters.
The Harvard Classics. 1909–14.
XXXVIII. To the Emperor Trajan
THE VERY excellent young man Sempronius Cælianus, having discovered two slaves among the recruits, has sent them to me. But I deferred passing sentence till I had consulted you, the restorer and upholder of military discipline, concerning the punishment proper to be inflicted upon them. My principal doubt is this, whether although they have taken the military oath, they are yet entered into any particular legion. I request you, therefore, Sir, to inform me what course I should pursue in this affair, especially as it concerns example.