Legionary - An epic military adventure set in the late Roman Empire. (Legionary #1)

376 AD: the Eastern Roman Empire is alone against the tide of barbarians swelling on her borders. Emperor Valens juggles the paltry border defences to stave off invasion from the Goths north of the Danube. Meanwhile, in Constantinople, a pact between faith and politics spawns a lethal plot that will bring the dark and massive hordes from the east crashing down on these struggling borders. 

The fates conspire to see Numerius Vitellius Pavo, enslaved as a boy after the death of his legionary father, thrust into the limitanei, the border legions, just before they are sent to recapture the long-lost eastern Kingdom of Bosporus. He is cast into the jaws of this plot, so twisted that the survival of the entire Roman world hangs in the balance…