Didius Julianus
Upon his arrival at Rome in 193, Severus discharged the Praetorian Guard, which had murdered Pertinax and had then auctioned the Roman Empire to Didius Julianus. Its members were stripped of their ceremonial armour and forbidden to come within miles of the city on pain of death. Severus replaced the old guard with 10 new cohorts recruited from veterans of his Danubian legions.