As in leopard with 4 heads & wings
Eastern Roman 395AD empire under the Tetrarchy setup by Diocletian
Daniel 7: 6 "After that, I looked, and there before me was another beast, one that looked like a leopard. And on its back it had four wings like those of a bird. This beast had four heads, and it was given authority to rule.
The 4 heads were:(from Wikipedia)
Nicomedia in northwestern Asia Minor (modern Izmit in Turkey), a base for defence against invasion from the Balkans and Persia's Sassanids, not Constantinople (given that name at its later refounding), was the capital of Diocletian, the eastern (and most senior) Augustus; in the final reorganisation by Constantine the Great, in 318AD, the equivalent of his domain, facing the most redoubtable foreign enemy, Persia, became the pretorian prefecture Oriens 'the East', the core of later Byzantium.
Sirmium (modern Sremska Mitrovica) in the Vojvodina region of modern Serbia, and near Belgrade, on the Danube border) was the capital of Galerius, the eastern Caesar; this was to become the Balkans-Danube- prefecture Illyricum.
Mediolanum (modern Milan, near the Alps), not Eternal Rome, was the capital of Maximian, the western Augustus; his domain became "Italia et Africa", with only a short exterior border.
Augusta Treverorum (modern Trier, in Germany) was the excentric capital of Constantius Chlorus, the western Caesar, near the strategic Rhine border, hence it had before been the capital of Gallic emperor Tetricus I; this quarter became the prefecture Galliae.