Diocletian's New Tirarchy

Diocletian was sensitive to the fact that rome had just gone through a dramatic decade and a half where the empire really was divided from itself. So he established a precedent whereby each of the tetrarchs would share in the victories of the others, coin in each other's names and come and go as the situation dictated. The two new caesars went to work right away. For constantius, this meant heading north to trier, where he immediately began to prepare a second invasion of britain. Galerius put lie to the notion that the tetrarches territorial divisions were hard and fast by heading to egypt to help quell an uprising on the upper n