Some good points here: The Legion is made up of sixist, backwards, savages. They promote cannibalism, technological regression, and the opression of women, and demonize enlightenment. This is basically the opposite of what imagines of the Romans, who allowed women to own property, were far more civilized than their neighbors (no cannibalism), were technologically advanced, and hired the most intelligent folks, Greeks, to teach their children. What's up with that? Justify it, Legionaires!
The Legion is only sixist until they get their Rome. Desperate times call for desperate measures. Besides, if many, both men and women, endure for 4 years and then are set freed as workers rather than slaves in a civilized environment, is it really that bad? Savages because they have no true home. The East is simply inadequate for Caesar.
Never promoted cannibalism.
They forgo technology because of a simple reason. It makes their soldiers and citizens weaker. Technology makes life luxurious and simple and for a war tribe fighting for a New Rome, that's not good. There's an old Korean proverb. "If your stomach is full and your body is warm, your mind wanders and your body deteriorates." The same proverb is spoken through North Korea...although taken way too far.
They oppress women because slave labor is needed in a tribe as a system of the working class hasn't been developed as it's still a tribe with no Rome. Not to mention men to fight. When they have a perfect system of workers in place, which would be a few years after a Legion victory at Hoover Dam, they'd have women as(almost) equal class citizens.
They don't demonize enlightenment. They demonize the idea of finding out that Caesar isn't really Son of Mars. Is it really that necessary to find out something as trivial as that if everything else improves? So many people are always like this. They see a dictator and care more about that one fault than the trillion good things he had done.