The three legions in Pannonia (VIII Augusta, XIX Hispana, and XV Apollinaris) were under the command of Junius Blaesus, who allowed his men a rest from military duties to mourn the death of Augustus. There was a breakdown in discipline, and the soldiers stopped obeying orders as a result. They soon became restless and lashed out against their officers, including Blaesus and a prefect named Aufidienus Rufus. Having been dispatched with two Praetorian cohorts, Drusus and Praetorian prefect Sejanus reached the Pannonian legions at Emona on 26 September.