Gallienus eventually reunited the Rhine, left behind Legio II Parthica[citation needed] to defend it, and went off to subdue the barbarians.

The Senate of Rome hastily organized a contingency of plebs for combat[1] in an attempt to ensure that the shrinking army was capable of protecting the city.

Afterward, Gallienus enacted a major reform by introducing a highly mobile field army composed mainly of cavalry (vexillationes).

The barbarian attack led the Roman Senate to try to regain its authority by arming and commanding its own military forces to meet the Germanic threat.

[citation needed] The fear caused by the incursion later resulted in Emperor Aurelian having a wall constructed to defend the city of Rome itself.