 This is the German version of "Constantine", the fifth episode of the internationally co-produced docu-drama "Ancient Rome: The Rise and Fall of an Empire" (see there for a full historical summary), using the dramatized scenes in full but some alternative off-screen text and interviews, about how Constantine the Great ultimately triumphed over his rivals in the civil wars into which Diocletian s Tetrarchy dissolved, forged a new, strong Byzantine empire, de facto the senior of the Western Roman empire, ended the persecution of Christianity, converted to it and laid the foundations for its later formal adoption as new state religion.