I was reading the trivia section on the Athanatoi and something seems out of place. If I remember my history correctly, and it's been twenty-ish years since I last studied the Byzantine Empire so I could be mistaken, but weren't the Byzantines considered the "Eastern Roman Empire" until they completely fell in 1453? The trivia section doesn't seem to reflect that and why their training, tactics, and conduct is similar to the Roman warfare standards. I'd edit it but I know nothing of how to edit Wiki pages.
*Edited for additional information*