Carinus vs Publius Septimius Geta

Carinus was proclaimed co-emperor with his brother Numerian after the death of their father Carus. Carinus ruled the Western provinces from Rome while Numerian governed the East. His reign was marked by alleged cruelty and debauchery, contributing to his unpopularity with the army.

Carinus defeated the usurper Marcus Aurelius Julianus, who had proclaimed himself emperor in Pannonia after Numerian's death. The victory secured Carinus's control over the Western provinces and eliminated a rival before his confrontation with Diocletian.

Carinus led his army against the forces of Diocletian at the Battle of the Margus River in Moesia. Despite initial success, Carinus was killed by his own officers during the battle, possibly due to his unpopularity. His death ended the line of emperors from the Crisis of the Third Century.

Geta accompanied his father Septimius Severus and brother Caracalla on a military campaign into Caledonia (modern Scotland). The campaign aimed to subdue the Caledonian tribes but achieved limited success, with heavy Roman casualties.

Emperor Septimius Severus elevated his younger son Geta to the rank of Augustus, making him co-emperor alongside his brother Caracalla. This joint rule was intended to secure the Severan dynasty's succession.

After the death of Septimius Severus, Geta was murdered in his mother's arms by soldiers loyal to Caracalla. The assassination occurred in the imperial palace, ending the power struggle between the brothers and leaving Caracalla as sole emperor.

Following Geta's murder, Caracalla ordered a damnatio memoriae against his brother. Geta's name was erased from inscriptions, his statues were destroyed, and his image was removed from public monuments, attempting to erase his memory from history.