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: https://www.youtube.com/watch?v=UIRS_... Support us on Patreon: http://www.patreon.com/KingsandGenerals or Paypal: http://paypal.me/kingsand