Septimius Severus, aiming for stability, made his sons Caracalla and Geta (of Gladiator II fame) co-emperors, which only fueled their rivalry. His last years were then spent campaigning in Britain, where harsh conditions and guerrilla warfare halted Roman advances. Then in AD 211, in the city of Eboracum (modern York, England), Septimius died. With his father out of the way, Septimius' older son Caracalla murdered his younger brother Geta, initiating a purge and condemning Geta's memory--setting a violet precedent for the years that followed.