Fitz Jenő. Honorific Titles of Roman Military Units in the 3rd Century

Akadémiai Kiadó, 1983. — 332 p.Epithets formed from the names of reigning emperors, which are known to have been awarded in great numbers between the start of the sole reign of Caracalla, C.E. 212, and the period of Diocletian present a source for the military history of the 3rd century which has hitherto been largely unexploited. The practice followed in awarding these epithets, the reasons for doing so and their historical value have been judged in very different ways by previous research. Two opposed positions have crystallized out of these views. According to the more widespread opinion, the epithet which emphasized that a unit belonged to the emperor, was automatically granted to all military formations on his accession to the throne.