When did Roman emperor Diocletian institute the Tetrarchy to end the Crisis of the Third Century?
Roman emperor Diocletian instituted the Tetrarchy in 293 AD. This administrative division split imperial power between two Augusti and two Caesars.
Questions about Civil wars of the Tetrarchy
Short answers, pulled from the story.
Who was elevated to Augustus by troops at Eburacum after the death of Constantius in 306 AD?
Troops at Eburacum elevated Constantine, son of Constantius, to the position of Augustus instead of accepting Severus. Galerius compromised by granting Constantine the title Caesar rather than Augustus while Severus received the latter office.
What happened to Maximinus Daza during the civil war that ended with his death in August 313?
Maximinus Daza mobilized against Licinius and seized Asia Minor before being defeated at the Battle of Tzirallum on the 30th of April 313. He fled to Nicomedia and attempted to stop the advance of Licinius at Cilician Gates but died in August 313.
Which battle marked the final victory for Constantine over Licinius on the 18th of September 324?
Constantine won the Battle of Chrysopolis on the 18th of September 324. This engagement forced Licinius and Martius Martinianus to surrender at Nicomedia and led to their eventual execution in 325.
When did the joint rule of Maxentius and Maximian face further testing when Galerius marched to Italy in summer 307?
Galerius marched to Italy in summer 307 with a larger army to challenge the joint rule of Maxentius and Maximian. During this invasion, Severus was put to death by Maxentius likely at Tres Tabernae while Galerius withdrew after soldiers defected from his invasion army.