Well I can tell you for a fact that on DWI I had no moral issues on our last trip (with 3 carts and 4 healers) and they come in damn handy now after that battle in Duil and for most of the time I had my men still on vanguard and moral was still high enough. Do have to point out here though that every time we fought a battle my moral went up 6 points. His men love fighting I guess?
Did it say it happened because of carts? Did you not use mercenary at all?
