may 6, 260 - Battle of Edessa

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The Battle of Edessa took place between the armies of the Roman Empire under the command of Emperor Valerian and Sassanid forces under Shahanshah (King of the Kings) Shapur I in 260. The Roman army was defeated and captured in its entirety by the Persian forces; for the first time in Rome's military history their emperor was taken prisoner. As such, the battle is generally viewed as one of the worst disasters in Roman military history.

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