Aug 253Aemilian deposes Gallusat Interamna Nahars
Sep 253–?? 260Valerian rulesRoman Empire
Sep 253Valerian deposes Aemilianat Sanguinarian Bridge
253Persians overrun Syriaand capture Antioch
Oct 253–?? 260Gallienus in chargeof Roman Europe
254Marcomanni raidas far as Ravenna
254–260Gallienus defendsRhine, Danube, and Dacia