The two emperors supervised a reorganization of the defences of Italy and the Illyricum, raised two new legions, "Legio II Italica" and "Legio III Italica", and crossed the Alps into Pannonia.
Konec leta 166 ali na začetku leta 167 je Panonijo napadla vojska najmanj 6.000 Langobardov in Lakringov.