Oh so thats why it takes 5 years to train them! 5 years to train three guys to swing a stick.
Yeah, that really bothers me. Since as far as we have records, humans have thought that the time to properly train non-specialist troops is three to six months.
I have no problems with equipment taking much longer, and additional traits adding to the production time. For example, there could be a "gorilla chest" trait that gives +2 initiative when using a bow, to reflect the fact that it takes a long time to develop the muscles (not the skill) to use a bow.
And by the way, I believe that any rushed unit should acquire the 'poorly trained' trait, something like 10% penalty to experience. Forever.
But even the most material poor city should be able to crank out bare-ass guys with sticks in at most two turns.