Roma DCX
From Tardis Wiki, the free Doctor Who reference
Roma DCX was one of many alternate timelines where the Roman Empire never fell. There, Emperor Nero embraced Christianity and made it the state religion. Later, a schism occurred between the western empire centered in Rome and the eastern empire centered in Constantinople, resulting in two millennia of crusades and counter-crusades and an arms race that pushed military strategy to its extreme. Each empire was led by a Pope-Emperor.
This Roma was the first to be invaded by the Greater German Reichs. (PROSE: Warlords of Utopia)