Battle of Milvian Bridge
Constantine defeats Maxentius at the Battle of the Milvian Bridge and becomes the dominant ruler in the western Roman Empire.
Permanent historical records · Updated 2026-11-03
312 in Roman Empire
Explore 14 historical events and records for Roman Empire in 312.
Historical records for Roman Empire in 312
Sorted by month and day. Records with no month are shown last. Showing 14 of 14 unique records.
14Unique records
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October
Entry into Rome
Constantine enters Rome after defeating Maxentius and is welcomed as the victorious western emperor.
Other events (month unknown)
Arrest of Lucian of Antioch
Lucian of Antioch is arrested & martyred
Battle of Turin
Constantine defeats Maxentian cavalry near Turin and continues his advance across northern Italy.
Battle of Verona
Constantine defeats forces loyal to Maxentius at Verona, removing a major obstacle on the road toward Rome.
Capture of Segusium
Constantine captures Segusium after encountering resistance during his advance into northern Italy.
Commander of Cavalry and Infantry
Appointed Commander of Emperor Maxentius cavalry & infantry
Crossing of the Alps
Constantine crosses the Alps with his army to begin the Italian campaign against Maxentius.
Death of Lucian of Antioch
Death of Lucian of Antioch
Execution of Lucian of Antioch
Lucian of Antioch is arrested & martyred
Invasion of Thrace
Defeats Maximus II Daia in battle
Invasion of ThraceI
Galerius dies & Maximus II Daia, ruler of Egypt & Syria attempts to capture Thrace
Praetorian Guard Disbanded
Constantine disbands the Praetorian Guard after its support for Maxentius and dismantles its military camp in Rome.
Vision before Milvian Bridge
Christian sources later report that Constantine experienced a religious vision before his decisive campaign against Maxentius.
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.