Pannonia Secunda

The Pannonia Secunda was one of the provinces of the Roman Empire. It was formed in the year 296, during the reign of emperor Diocletian. The capital of the province was Sirmium (today Sremska Mitrovica). Pannonia Secunda included parts of present-day Serbia, Croatia, and Bosnia and Herzegovina.

History

Before the creation of this province, its territory was part of the province Pannonia Inferior. In the year 296, Pannonia Inferior was divided into two province - Pannonia Secunda in the south and Pannonia Valeria in the north. Border between two newly established provinces was river Drava.

Capital of Pannonia Secunda, Sirmium, was also one of four capitals of the Roman Empire and several Roman emperors were born in or near this city.

In the year 314, there was a battle between two pretenders to the imperial throne, Constantine the Great and Licinius. The battle occurred in Pannonia Secunda, near the town of Cibalae. Constantine had army of 20,000 men, while Licinius had 35,000. Battle lasted during the whole day and Constantine was victorious.