History of Europe
In 395 Theodosius I, who had made Christianity the official religion of the Roman Empire, would be the last emperor to preside over a united Roman Empire. The empire was split into two halves: the Western Roman Empire centred in Ravenna, and the Eastern Roman Empire (later to be referred to as the Byzantine Empire) centred in Constantinople. The Roman Empire was repeatedly attacked by Hunnic, Germanic, Slavic and other “barbarian” tribes (see: Migration Period), and in 476 finally the Western part fell to the Heruli chieftain Odoacer.
Herules
Along with many other people they reappear in the written records as one of many groups from the east who were struggling for supremacy on the left bank of the middle Danube after the death of Attila, in the area stretching from modern Bavaria to modern Hungary. They established their own kingdom and many joined Odoacer, who deposed the last Western Roman Emperor Romulus Augustus in 476 AD. They became well known both as soldiers in various Roman armies, in the Italian kingdom of Odoacer, and as sea raiders on the Atlantic coast, before fading out of history. The Danubian kingdom broke up and remnants settled in the Balkans and other places. The last known political entity which was described as Herulian seem to have been in the area of modern Belgrade in the 550s, as a settlement within the Roman Empire and under Roman control.