whats the difference between morale and command stars?

[Gilrandir]

If I'm not mistaken, the whole army gets +1 morale for every 2 stars of the general (along with the attack/defense bonuses), while units close to the general (within 50 meters?) get +1 for every star.

Welcome to the .Org!

I know that 2 stars of the general give +1 valor to the units. As to the closeness to the general, I wonder how distances are measured on the battle map?