Quote Originally Posted by Ludens View Post
The Ludus Magna contains most of the old threads for research into the R:TW engine. I don't think we ever worked out exactly what the unit attributes (such as "disciplined") did, though.
from EDU guide made by Aradan:
"disciplined" units morale won't be affected by nearby routing units, while "normal" and "impertuous" units will lose a point when nearby allies rout. "low" discipline unit lost in bigger parts. (or disciplined units affected in smaller margin, a bit forgot since I've seen disciplined units got chain routs)

And "Disciplined" units regain morale faster, while another got at longer time.

Unit training affect the "tidyness" of the formation, and maybe responsiveness to movement location