The Battle of Mardia, also known as Battle of Campus Mardiensis or Battle of Campus Ardiensis, was fought in late 316/early 317 between the forces of Roman Emperors Constantine I and Licinius. Its loc
Left: bust of Licinius in Kunsthistorisches Museum, Vienna; right: head of the colossal statue of Constantine I in the Palazzo dei Conservatori, Rome.
Portrait bust of Constantine I
The civil wars of the Tetrarchy were a series of conflicts between the co-emperors of the Roman Empire, starting from 306 AD with the usurpation of Maxentius and the defeat of Severus, and ending with
Constantine at the battle of the Milvian Bridge, fresco by Raphael, Vatican Rooms.
The emperor Diocletian, who established the Tetrarchy.
The Battle of the Milvian Bridge saw the death of Maxentius in 312 AD.