 Although his actions turned Rome more into a military dictatorship, he was popular with the citizens of Rome, having stamped out the rampant corruption of Commodus's reign.When he returned from his victory over the Parthians, he erected the Arch of Septimius Severus in Rome.According to Cassius Dio, however, after 197 Severus fell heavily under the influence of his Praetorian Prefect, Gaius Fulvius Plautianus, who came to have almost total control of the imperial administration.