[Antoninus]

The abdication of Diocletian was one of the most history-changing events in human history which led directly to the advent of Constantine the Great a year later.

[sauropod]

Bkmk

[outofsalt]

How do you divide the Roman empire?
With two Caesars.

[outofsalt]

"Diocletian’s concern that he would be vulnerable in retirement proved valid as well."

He was banned on Fakebook and Twaddle!

[SunkenCiv]

Diocletian stopped the disintegration of the Roman Empire in its Crisis of the Third Century, that had began with the reign of Septimius Severus, a highly effective war leader who was proud of his Carthaginian roots, and the rest of the Severan dynasty wasn't up to the job.

After reorganizing the provincial borders and administration, and dividing the Empire into four administrative districts, Diocletian set up a system of orderly succession, prepared a fortified retirement villa that still stands in Split, Croatia, then he retired to test the system he'd set up. He compelled his eastern colleague to do the same. D had to emerge from retirement for a time to straighten it out.

[Mount Athos]

For anyone who enjoyed reading this, check out this earlier entry from same blog, it covers the great persecution of Christians.
https://gloriaromanorum.blogspot.com/2019/02/these-are-triumphs-of-goths-and.html

[Rurudyne]

At least those men unfit for the charge of public affairs knew which restroom to use....

[Jay W]

So, where did Corn Popius fit into all this?

[Verginius Rufus]

I once saw a Byzantine chronicle which has short notices of events. It labeled Diocletian “the son of Satan.”