While making the regiment with my group, one of my players noticed something funny: the whole squad is illiterate. Not only that but, rules-as-written, unless the regiment hails from a Schola or an Imperial World, every single class starts not knowing how to read or write, since you need to be trained in Linguistics to do so, which no one is
I understand that education is hardly a given in the grim darkness of the 41st millenium, but found it funny that people like the Comissar or the Missionary, who should have had a more enlightened upbringing, also start being illiterate.
Now I just have to wonder whether such a thing was an oversight or a feature.