It's nowhere near as detailed as the F1 screen, but you can gague the valour of an enemy unit by looking closely at it and counting how many flags the unit is carrying. A 0 valor unit only carries it's main standard. For each point of valor, a little pennant of the faction's color is added to a member of the group. So if you saw a unit of enemy feudal sergeants and they had their banner with 3 little pennants, then you know the unit you're facing is valor 3. That, combined with the type of unit it is gives you some idea about them. What would be cool is if there was a function like in Sid Meyer's Gettysburg... the faster the flag & pennnants were bouncing up and down, the lower the unit's morale was (how close it was to getting ready to break and run).