- And this makes me wonder if all the Sturm und Drang over Religion and Ideology wasn't entirely misplaced, since Civ VI, at least, uses "Faith" to cover far more than merely Religious fervor and activity. In all my reading of both Soviet Communist and Nazi German documents, they both refer to their ideological belief systems in very Religious terms: including using words like Faith and Belief rather consistently. In addition, of course, both ideological systems had their own forms of Fanatic troops: the NKVD units and Waffen SS formations, respectively, who happily slaughtered their enemies of a different ideology with the same fervor any Crusader or Ghazi showed to their religious enemies . . .
Therefore, in game terms at least, Ideology and Religion might well be Interchangeable mechanically - although I do not personally think that is a completely accurate model, it could be done that way and, I suspect, very few gamers would notice.