Support our channel and get Brilliant! First 200 get 20% off - Our animated historical documentary series on the evolution of Roman armies and tactics continues with a video on the military reforms of Roman Emperors Gallienus, Diocletian and Constantine, as the introduction of limitanei, comitatenses and other reforms changed the armies of the Roman empire. Previous videos in the Evolution of Armies and Tactics series: Support us on Patreon: or Paypal: We are grateful to our patrons and sponsors, who made this video possible: The video was made by our friend Arb Paninken while the script was researched and written by Matt Hollis This video was narrated by Officially Devin ( & ) ✔ Merch store ► ✔ Patreon ► ✔ Podcast ► iTunes: ✔ PayPal ► ✔ Twitter ► ✔ Facebook ► ✔ Instagram ► Production Music courtesy of Epidemic Sound: #Documentary #RomanArmy #Diocletian