Editing Sejanus (section)

=== Praetorian Guard ===
The reforms of Sejanus most significantly included the founding of the [[Castra Praetoria]], which established the Praetorian Guard as the powerful political force, for which it is primarily known today.<ref>{{ cite book | last = Durry | first = Marcel | title = Les Cohortes Prétoriennes | year = 1938 | location = Paris | publisher = Editions De Boccard | page = 156}}</ref> Henceforth the Guard was at the disposal of the emperors, and the rulers were equally at the mercy of the Praetorians.<ref>Bingham, p. 234f.</ref> The reality of this was seen in AD 31, when Tiberius was forced to rely upon the [[vigiles]] against the soldiers of his own guard.<ref name="dio-history-lviii-9"/> Although the Praetorian Guard proved faithful to the aging Tiberius, their potential political power had been made clear.<ref>Bingham, p. 65f.</ref> The power Sejanus attained in his capacity as prefect proved [[Maecenas]] right in his prediction to Augustus, that it was dangerous to allow one man to command the guard.<ref>Cassius Dio, ''Roman History'' [https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/52*.html#24 LII.24]</ref> [[Cassius Dio]] notes that after Sejanus, no other prefect except [[Gaius Fulvius Plautianus]], who commanded the Guard under [[Septimius Severus]], would rise to such influence.<ref>Cassius Dio, ''Roman History'' [https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/58*.html#14 LVIII.14]</ref>