Carinus died

Historians differ on what then ensued. At the Battle of the Margus, according to one account, the valor of his troops had gained the day, but Carinus was assassinated by a tribune whose wife he had seduced. Another account represents the battle as resulting in a complete victory for Diocletian and claims that Carinus' army deserted him. This account may be confirmed by the fact that Diocletian kept in service Carinus' Praetorian Guard commander, Titus Claudius Aurelius Aristobulus.