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Home / Historical Periods / Imperial Rome / Crisis of the Third Century

Phase

Crisis of the Third Century

235–284 CE

The Crisis of the Third Century began after the death of Severus Alexander in AD 235 and lasted until Diocletian’s rise in AD 284. The empire faced repeated usurpations, civil wars, invasions, economic strain, plague, and breakaway regimes in Gaul and Palmyra. Emperors often came from the army and could fall as quickly as they rose.

This crisis mattered because it nearly broke the Roman Empire apart while also forcing adaptation. The old patterns of imperial rule could not easily manage simultaneous frontier threats and internal competition. The reforms of Diocletian and later emperors were responses to this traumatic half-century.

The Crisis of the Third Century is one of the best late-imperial settings for military and political fiction. Harry Sidebottom’s Warrior of Rome series is directly relevant, with its focus on Ballista, eastern wars, usurpers, and an empire under strain. The phase also suits readers of Douglas Jackson, Anthony Riches, and other imperial military authors because it offers invasions, breakaway regimes, plague, economic fear, and constant uncertainty over who actually rules Rome.

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Series

Series about Crisis of the Third Century (1 series)

Warrior of Rome in Order

by Harry Sidebottom 8 books 4.3

The Warrior of Rome series follows Marcus Clodius Ballista, an Angle raised within the Roman world who becomes a senior imperial commander during the Crisis of the Third Century. His service carries him from the Persian frontier to Palmyra, the Black Sea, the Eurasian steppe, Rome, Sicily and…

Books

12 Best Novels About the Crisis of the Third Century

Bestselling authors first, then star rating.

Non Fiction

1 Non-Fiction Book About the Crisis of the Third Century

Histories, biographies and reference works are listed separately from the historical novels above.