ante diem v kalendas novembres

THIS DAY IN ANCIENT HISTORY
On this day in 312 AD Roman emperor Constantine I, the Great, defeated Maxentius, his major rival in the west, at the Battle of the Milvian Bridge and became undisputed master of Rome.

• ludi Victoriae Sullanae (day 3)
• 176 A.D. -- Commodus is hailed as imperator for the first time