Battlefield Academy looks like a good turn-based game from Slitherine software. It is also being sold by Matrix Games. Looks abit cartoony but Ive heard has alot of depth to it. In the forums people seem to be raving about it too. I might actually buy it when I get the money. :-
http://www.slitherine.com/games/bbc_ba_pc
http://www.matrixgames.com/products/...efield.Academy