At age forty, Diocletian ascended to the throne
The Illyrian army's elite corps included Diocletian, who did not become well-known until 283 AD. After being named the domestic Protectores' leader, he started to become well-known. It was a highly trained cavalry troop that belonged to the Imperial family. In the "protectors domestics," the imperial bodyguard, Diocletian participated. He held this role under Carus' son and successor, Numerian, and took part in the unexplained death of Emperor Carus in the Persian expedition.
The sons of Carus, Carinus, and Numerian shared the role of emperor. In the West, Carinus ruled, and Numerian conquered the East. But Numerian inexplicably passed away inside the bus he was riding on. When he got back from the Roman Empire's eastern frontier, he was dead. When Aper, the commander, learned of Numerian's passing, he informed the troops. The legion, a division of the army, afterward proclaimed Diocletian emperor of the East. Later, in 284 AD, Diocletian approved it. He wasn't yet emperor of the entire Roman Empire, though.
In the Roman Empire, Carinus was a weak and unpopular emperor. He also abused the Senate while seducing the spouses of his subordinates. Carinus was also assassinated by his troops when the Battle of the Margus started. This occurrence gave Diocletian complete power over the Roman Empire. Diocletian became emperor in his forties, that is the interesting facts about Diocletian make surprised everyone.
