Britain and Spain were lost, Gaul in the hands of a usurper, and Italy ravaged following the Sack of Rome. The Empire looked doomed.

By then rose Flavius Constantius, a brilliant and experienced Roman commander. Just seven years after Rome's sack, he had put much of the Empire back together and it seemed to be about to embark on a new golden age.

Find out how he did so, against overwhelming odds.

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