| The final form of the legion originated with the elite legiones palatinae created by Diocletian and the Tetrarchs. |
| Four of Herod's sons ruled the kingdom divided into four tetrarchies, so the rulers were called tetrarchs, not kings. |
| The colorplates are of good quality, though the choice of the porphyry portrait of the Tetrarchs in detail is questionable. |
| When Diocletian divided authority between the tetrarchs, each of them established a capital in a different region of the empire and embellished it with appropriate grandeur. |
| Recognizing the emperor's vulnerability, he also chose to divide authority among four rulers, known as the tetrarchs. |
| Van Dam also discusses the ways Diocletian and the Tetrarchs promoted Roman imperial unity through the hegemonic use of Latin in their administration of the East. |
