This is the central part of the so-called camp of Diocletian where the military insignia were kept. 3rd-4th century AD.

From the Enc. Britt.: born AD 245 , Salonae?, Dalmatia [now Solin, Croatia] died 316, Salonae. Latin in full Gaius Aurelius Valerius Diocletianus , original name Diocles Roman emperor (284–305), who restored efficient government to the empire after the near anarchy of the 3rd century. His reorganization of the fiscal, administrative, and military machinery of the empire laid the foundation for the Byzantine Empire in the East and temporarily shored up the decaying empire in the West. His reign is also noted for the last great persecution of the Christians.


Acclaimed emperor on Nov. 17, 284, Diocletian possessed real power only in those countries that were dominated by his army (i.e., in Asia Minor and possibly Syria). The rest of the empire was obedient to Numerian's brother Carinus. After having put down a revolt by Julianus, a troop commander in Pannonia, whom he attacked and killed near Verona, Carinus proceeded to attack Diocletian. An indecisive battle near the confluence of the Margus (modern Morava) and Danube rivers, not far from present-day Belgrade, would have been a defeat for Diocletian had Carinus not been assassinated by a group of soldiers. Thus, in midsummer of 285, Diocletian became master of the empire.