Following the murder of Emperor
Pertinax by the
Praetorian Guards on 28 March 193 after a reign of only 3 months, a struggle began for the succession to the
throne of the
Roman Empire, resulting in the
Year of the Five Emperors. After the murder of Pertinax, despite the dismay and demonstrations of the
plebeians, the praetorians auctioned the empire to the highest bidder,
Didius Julianus. The disenchanted Roman crowd called out the name of
Pescennius Niger, governor of
Roman Syria, who controlled three
legions, to come to Rome to take over. When Pescennius Niger heard the news of Pertinax's death, he proclaimed himself emperor and gained the support of 10 legions in total. Meanwhile,
Septimius Severus, governor of
Pannonia Superior, and also a commander of three legions, had been proclaimed emperor by his legions. Severus promised to avenge the murder of Pertinax, who had been held in high regard by the soldiers. Before moving on Rome to overthrow Didius Julianus, Severus made an alliance with the powerful commander of the three legions and
70 auxiliary regiments in
Britannia,
Clodius Albinus Severus recognized Albinus as
Caesar and apparent heir to himself as
Augustus. Albinus accepted this arrangement. The
Roman Senate then acclaimed Severus as emperor. Severus then tried to strengthen his position as Augustus, by describing himself as the son of
Marcus Aurelius and brother of
Commodus. He also raised his own young son, Bassianus, more commonly known as
Caracalla, to the rank of Caesar and gave him the name Marcus Aurelius Antoninus. This broke Severus' alliance with Albinus, presenting an obvious threat to Albinus which he countered by declaring himself Augustus. The Roman Senate declared Albinus to be a public enemy on 15 December 195. By early 196, Severus had installed his ally Publius Cornelius Anullinus as urban prefect of Rome in another move to consolidate his position. The stage was now set for a civil war between the forces being gathered by Severus and Albinus, ultimately culminating in the Battle of Lugdunum. ==Revolt and preliminary moves==