208 AD Severus repairs Hadrian's Wall. 287 AD Revolt by Carausius, commander of the Roman British fleet. He rules as emperor. 293 AD Carausius is killed by Allectus, a fellow rebel. 306 AD Constantine is proclaimed emperor at York.
Roman generals intervene.
369 AD Roman general Theodosius drives out the Picts and Scots. He leads his troops to conquer Gaul, Spain, and Italy. 388 AD Maximus occupies Rome. Theodosius has Maximus beheaded. 396 AD Stilicho, a Roman general and the acting regent, transfers military authority from Rome to Britain.