Description

Constantius II was the Roman emperor from 337 to 361. His reign saw constant warfare on the borders against the Sasanian Empire and Germanic peoples, while internally, the Roman Empire went through repeated civil wars, court intrigues, and usurpations. His religious policies inflamed domestic conflicts that would continue after his death.

Sirmium was a city in the Roman province of Pannonia. First mentioned in the 4th century BC and originally inhabited by Illyrians and Celts, it was conquered by the Romans in the 1st century BC and subsequently became the capital of the Roman province of the Pannonia Inferior. In 294 AD, Sirmium was proclaimed one of the four capitals of the Roman Empire. It was also the capital of the Praetorian prefecture of Illyricum and Pannonia Secunda. Sirmium was located on the Sava river, on the site of modern Sremska Mitrovica in northern Serbia. The mint in Sirmium was connected with the mint in Salona and silver mines in the Dinaric Alps through the Via Argentaria.