Assassination of Roman Emperor Carinus

Emperor Carinus was killed in battle against the forces loyal to his rival, Diocletian, near the Margus River. The conflict marked the end of Carinus's brief reign and a turning point in the Tetrarchy system's consolidation.

His death cleared the path for Diocletian to become sole ruler over the Roman Empire, leading to significant administrative and military reforms. The political instability during Carinus's rule culminated in this decisive confrontation.