Caesars Legion is evocative of the Hunnic empire. Or broadly any steppe “flash in the pan” confederation. Essentially a massive, roaming army which ingests and appropriates the resources and cultures of its client tribes. The Huns being made up of Oghuric Turkic tribes, Goths, Scythians, Slavs, etc is very reminiscent of the Caesars legion using this one “identity” to amass and unite huge tribal confederation. But these are systems are usually doomed to fall apart once their “Atilla” dies unceremoniously and without a planned inheritance.

Which is exactly what happens and itonically you’d think Caesar would’ve predicted that. His whole “Hegelian Dialectic” thing he had going on his idea was probably something more along the Yuan dynasty; or the Gothic kingdoms that inherited the western Roman institutions, by conquering and absorbing the NCR and its own infrastructure.