FoG is very different from WAB. First, the scale is larger; one stand may contain 2-4 figures and represent an abstract number of troops, opposed to WAB which is skirmish-level fighting. Also, the base mechanic is a little different (no wounds/saves, just who won/lost the melee, pray you don't lose!) and the goal is to break the morale of the enemy army, rather than causing attrition. You'll break and run before you lose a many stands in a battlegroup.
If you enjoy realistic, larger scale battle, you will probably enjoy it. I would encourage you to go to the Slitherine Forums to ask around for players in CO. It is heavily anglicized, but they're friendly enough. When not digressing about "football."
I wish I had something witty to say...