The "barracks emperors" is a term coined by later historians referring to the Roman emperors who were chosen and supported by the army during the period known as the Crisis of the Third Century (also known as the Imperial Crisis, 235-284).
More about: The Barracks EmperorsDefinition
Timeline
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235 CE - 284 CEThe Crisis of the Third Century in Rome; period of the barracks emperors.
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Mar 235 CE - May 238 CEReign of Roman emperor Maximinus Thrax.
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18 Mar 235 CEAssassination of Alexander Severus and his mother, which begins crisis and period of barracks emperors.
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238 CE - 244 CEReign of Gordian III in Rome.
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22 Mar 238 CE - 12 Apr 238 CEReign of Gordian I and Gordian II in Rome.
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Apr 238 CE - Jul 238 CEReign of Balbinus and Pupienus in Rome.
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244 CE - 249 CEReign of Philip the Arab in Rome.
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249 CE - 251 CEReign of Decius in Rome.
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251 CEReign of Hostilian in Rome.
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251 CE - 253 CEReign of Gallus in Rome.
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253 CE - 260 CEReign of Roman emperor Valerian with his son Gallienus as co-emperor.
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253 CEReign of Aemilianus in Rome.
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253 CE - 268 CEReign of Gallienus in Rome.
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260 CE - 269 CEPostumus rules the "breakaway" Gallic Empire.
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268 CE - 270 CEReign of Claudius Gothicus in Rome.
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c. 270 CE - 272 CEZenobia rules the "breakaway" Palmyrene Empire.
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Sep 270 CE - c. Sep 275 CEReign of Roman emperor Aurelian.
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271 CE - 274 CETetricus I rules the Gallic Empire until defeated by Aurelian.
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275 CE - 276 CEReign of Tacitus in Rome.
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276 CEReign of Florianus in Rome.
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276 CE - 282 CEReign of Probus in Rome.
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282 CE - 283 CEReign of Carus in Rome.
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283 CE - 285 CEReign of Numerian and Carinus in Rome.
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284 CE - 305 CEReign of Diocletian who resolves the Crisis of the Third Century and eventually divides the Roman Empire for easier management.
