Battle of Mardia (Constantine vs Licinius) took place in 316 AD during the civil wars of the Tetrarchy.
Wikipedia article on Battle of Mardia · Wikidata entry
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Battle of Mardia took place in 316 AD. Constantine vs Licinius. Part of the civil wars of the Tetrarchy. Explore the interactive map and full Wikipedia details on WarAtlas. Please enable JavaScript to use the full app.