One more thought...

Scotland is a faction of extremes...

On one hand they have some excellent defensive units... (Noble Pikemen, etc...)

ON the other they have some units that have incredible attack but no defense to speak of (My personal favorites...)

It's an interesting combination, that IMHO works best using Guerilla style tactics. (Yeah, that does make the middle east and north africa harder to win in.)

Terrain is my friend.

(Why am I suddenly seeing guys in kilts whispering mantras... "The trees are my shelter, the trees are my armor, trust in them and I shall fell my enemies...")