The emperor Jovian (363-364) who reestablished Christianity as the official religion of the Roman Empire was born in Moesia Prima, in Singidunum. In his early career, later Roman emperor Theodosius I served as military commander of Moesia Prima in 373. In 382 Roman emperors Theodosius I and Gratian met in Viminacium, the capital of Moesia Prima, during the Gothic Wars.