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Battle of Mediolanum

Battle of Mediolanum
Part of Part of Roman-Alamanni conflict
Part of the Roman-Germanic wars
Gaius Messius Quintus Traianus Decius
Map of Roman Mediolanum
Date 259
Location Mediolanum (modern Milan),  Italy
Result Roman victory
Territorial
changes
Permanent loss of parts of Agri Decumates
Belligerents
Roman Empire Alemanni
Commanders and leaders
Gallienus Unknown
Strength
60,000 armed 300,000 (warriors & civilians)
Casualties and losses
Unknown 300,000

Coordinates: 45°28′00″N 9°10′00″E / 45.466667°N 9.166667°E / 45.466667; 9.166667

The Battle of Mediolanum took place in 259, between the Alamannic Germans and the Roman legions under the command of Emperor Gallienus.

As Emperor Valerian, Gallienus´ father, was unable to be present in the battlefield, he named his son Gallienus Emperor. While Valerian was fighting against the Sassanid Empire and the Goths, who by that time had sacked Thrace and Asia Minor, Gallienus would be in charge of defending the Roman Empire's border.

In the Western half of the Empire, the situation was difficult. The Danubian border resisted continuous barbarian attacks. Gallienus had to march with military reinforcements from Gaul towards Dacia and Moesia to fight the Barbarians. The situation was so severe that in 259, the legions of Pannonia and Moesia rebelled and chose to make Ingenuus the emperor. Gallienus reunited the Rhine, left Legio II Parthica to defend it and went off to do battle.


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