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Course A107: From Late Antiquity to Byzantium

 

Diocletian and 'Recovery'

Dates

284 20 Nov. Diocles becomes emperor at Nicomedia and changes his name to Diocletian

285 Defeats his rival Carinus and becomes sole emperor

summer: Appoints Maximian caesar

286 Rebellion of Carausiuswho proclaims himself augustus in Britain

287 Maximian second augustus

287 Diocletian makes a peace treaty with Persia

287/8 Maximian tries to suppress Carausius

289 Maximian's fleet is defeated (or wrecked in a storm). Carausius is left to rule in Britain

290 Celebration at Milan to mark the military victories of the two augusti

293 Galerius and ConstantiusCaesars, creating the tetrarchy. Galerius basedat Thessalonike

296 Constantius defeats Carausius and governs Britain

296 Revolt in Egypt headed by Domitius Domitianus and Aurelius Achilles

296/7 Persian Narses expels Tiridates, Roman protégé, king of Armenia

297 Galerius unsuccessfully invades Persia

297/8 Maximian fights against Moorish tribes in Africa and secures victory

298 Alexandria falls to Diocletian after a siege
Galerius wins a significant victory over Narses who is forced to concede territory

303 Persecution of Christians: Edicts

305 1 May , Diocletian and Maximian abdicate: Galerius and Constantius Augusti

For the evolution of the tetrarchy see Tetrarchy Table

306 Constantius dies

311 Galerius dies: buried at Romuliana:

c.312 Death of Diocletian

Sources and Documents:

Bibliography

Economy

Law

Administration

The Provinces

· provinces divided into smaller units
· provinces grouped into 12 new dioceses under a new equestrian official (vicarius or deputy of the praetorian prefect)
· separation of civilian and military duties

Innovations

· imported court ceremonial from the East
· New capital at Nicomedia

The Army

· creation of more units - legions and vexillationes
· introduction of measures to improve recruitment
· fortresses and military roads built
· change form the old forward defence system to deep fortified battle zones behind the frontier
· major distinction made between mobile troops and static garrisons of the forts

Split


See also Courtauld archive
For Baths of Diocletian at Rome see 1 and 2

Art


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Updated December 1, 2009