Buena Vista, but I've never been able to game it "properly." At a ground scale of 1"=100', the battlefield would be right at 12' in length and potentially over 6' wide.
Also, it is easily the most difficult battlefield to represent in 3D of any I can think of (short of some Andean and Himalayan actions). If there was a sand table of the proper dimensions, the terrain would be a LOT easier to represent in the necessary detail, but I don't have one (almost did, but had to abandon the idea, though for reasons one might not think).
Most wargame rules seriously if unintentionally, exaggerate the number of men represented by a base at larger ground scales. That is, "shrinking" the battlefield to 1"=500' (for example) makes it very manageable to build, but units would have to be represented by as few as only two or three figures. Otherwise, units would be impossibly huge with even only 10 or 12 figures each.
Again, that's really just the failure of man-to-figure ratio systems which rarely represent actual frontages/depths.
The majority of the Angosturas/Buena Vista battlefield is dead ground that can barely be traversed either in formation or not, and the actual combats were on only "islands" of practical ground. Part of Taylor's brilliance (or at least his Chief-of-Staff's) was to recognize that only those "islands" needed to be defended and held, not the entire field. Thus the importance of depicting the whole terrain in a fashion that clearly provides these areas, and in a way that matches the basing system for all units.
Quite a challenge and one I haven't been able to crack--yet.
But my favorite battle indeed! Never was so much riding on so few Yanqui's in the face of many Mexicanos!
TVAG