Barracks emperor
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A Barracks Emperor is a Roman Emperor who seized power by virtue of his command of Imperial military forces (a barracks is a building used to house soldiers). Barracks Emperors were especially common in the period from 235 through 268, during the Crisis of the Third Century. There were approximately fourteen Barracks Emperors in 33 years, producing an average reign of a little over two years apiece. The resulting instability in the Imperial office and the near constant state of civil war and insurrection threatened to destroy the Roman Empire from within and left it vulnerable to attack from without.
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Style of the 3rd century Barracks Emperors
Unlike previous Emperors who had seized power in military coups d'état (Vespasian and Septimius Severus, both from middle-class plebeian stock), the Barracks Emperors tended to be low-class commoners (often from disreputable parts of the Empire); the first Barracks Emperor par excellence, Maximinus Thrax, had begun his military career as an enlisted soldier (miles). A Barracks Emperor could not boast of a distinguished family name or a successful career as a statesman or public servant; rather, he had only his military career to recommend himself, and his only influence was the points of his soldiers' swords.
Because the Barracks Emperors were frequently border commanders, the act of overthrowing the reigning Emperor and seizing power for themselves left large gaps in the Empire's border defenses, gaps that could be exploited by the Romans' enemies, such as a Germanic incursion into Imperial territory in the 260s, resulting in the construction of the Aurelian Walls around Rome. The Barracks Emperors also used state money to pay their troops -- no Emperor who had come into power by force of arms could afford to allow his soldiers to fall into dissatisfaction or disaffectation, as those who live by the sword die by the sword -- and public works and infrastructure fell into ruin. To accommodate the vast demands of buying off their soldiers, the state often simply seized private property, damaging the economy and driving up inflation.
Transition to the Dominate Era
The Imperial system was on the verge of total collapse in 284 when yet another Barracks Emperor, a Greek-born cavalry commander named Diocletian, seized power and donned the purple. Diocletian instituted a number of reforms designed to stabilize the Empire and the Imperial office, including a collegial system of Emperors called the Tetrarchy, bringing an end to the Third Century Crisis and inaugurating the Dominate era of Roman history.
Although further Emperors would don the purple on the basis of military power (e.g., the Illyrian Constantine I, the Pannonian Valentinian I, and the Spaniard Theodosius I), the phenomenon of the Barracks Emperors died out, to be replaced in the late Imperial era by Shadow Emperors like Flavius Stilicho, Flavius Constantius, Flavius Aëtius, Marcus Maecilius Flavius Eparchius Avitus, Ricimer, Gundobad, Flavius Orestes, and Odoacer, military strongmen who effectually ruled the Empire as Imperial generalissimos controlling weak-willed puppet Emperors rather than by donning the purple themselves.
List
| Reign | Incumbent | Notes |
|---|---|---|
| February/March 235 to March/April 238 | Maximinus Thrax | Murdered by troops |
| earlyJanuary/March 238 to lateJanuary/April 238 | Gordian I | Committed suicide |
| earlyJanuary March 238 to lateJanuary/April 238 | Gordian II | Killed in battle |
| earlyFebruary 238 to earlyMay 238 | Pupienus Maximus | Murdered by the Praetorians |
| earlyFebruary 238 to earlyMay 238 | Balbinus | Murdered by the Praetorians |
| May 238 to February 244 | Gordian III | Murdered |
| 240 to 240 | Sabinianus | Proclaimed himself emperor; defeated in battle |
| February 244 to September/October 249 | Philip the Arab | Killed in battle by Decius |
| 248 to 248 | Pacantius | Proclaimed himself emperor; murdered by his own soldiers |
| 248 to 248 | Jotapian | Claimant |
| 248 to 248 | Silbannacus | Usurper |
| 249 to June 251 | Decius | Killed in battle |
| 249 to 252 | Priscus | Proclaimed himself emperor in the Eastern provinces |
| 250 to 250 | Licinianus | Claimant |
| early251 to 1 July 251 | Herennius Etruscus | Killed in battle |
| 251 to 251 | Hostilian | |
| June 251 to August 253 | Gallus | Murdered by his own soldiers |
| July 251 to August 253 | Volusianus | Murdered by his own soldiers |
| August 253 to October 253 | Aemilian | Murdered by his own soldiers |
| 253 to June 260 | Valerian I | Co-emperor with Gallienus; captured by Persians: died in captivity |
| 253 to September 268 | Gallienus | Co-emperor with Valerian 253 to 260; murdered |
| 258 or June 260 | Ingenuus | Proclaimed himself emperor |
| 260 | Regalianus | Proclaimed emperor |
| 260 to 261 | Macrianus Major | Proclaimed emperor; defeated and killed in battle |
| 260 to 261 | Macrianus Minor | Proclaimed emperor; defeated and killed in battle |
| 260 to 261 | Quietus | Claimant |
| 261 to 261 or 262 | Mussius Aemilianus | Proclaimed emperor |
| 268 to 268 | Aureolus | Proclaimed himself emperor; surrendered to Claudius II Gothicus |
See also
| Roman Emperors by Epoch (see also: List - Concise List - Roman Empire) | |||||||||
| → (Italy:) → (Much later in Western Europe:) → (Continuing in Eastern Europe:) |