|353||Battle of Mons Seleucus||★ ★ ★ ★ ★|
|Outcome:||The final defeat of usurper Magnentius by Constantius II||11 August 353|
|War & Enemy:||
Romans (Civil War)
Later Roman Military Civil Wars
|The Battlefield|| Location:
In the department of Hautes-Alpes, near modern La Bâtie-Montsaléon in southeastern France
| Modern Country:
|The Byzantines(emperor: Constantius II)||The Enemies|
|Commander:||Emperor Constantius II||Magnentius, Augustus of the West|
Despite victory at Pavia in 351 after his defeat at Mursa Major, the usurper Flavius Magnus Magnentius was pursued back to Gaul by Emperor Constantius II, who later took an army west from Milan to finally deal with his rival. In south-eastern France at Mons Seleucus (department of Hautes-Alpes, near modern Gap), Magnentius suffered a decisive defeat. He fled northwest to Lugdunum, where he took his own life by falling on his sword.
Following the suppression of Magnentius' rebellion, Constantius commanded an investigation be made to find his followers. The most notorious agent in this search was the cruel Paulus Catena ("the chain"). Many people were tortured and killed.
|Aftermath:||Constantius II was now the undisputed sole Emperor of the Roman empire.|