Tactical Game X is a modern take on the classic Panzer Leader / Panzer Blitz games, which now are pushing fifty years old. They’re still great, though, and if you love them, you might want to take a look at Tactical Game X.
Phil Johnson and Les Benoot offer a pdf download of fog of war rules for the horse and musket era. These are a generic add on for other horse and musket rules sets, and are intended to reflect the problems offered by visibility and scouting on command control.
Here’s a downloadable playsheet for Games Workshop’s Lord of the Rings game.
Point Blank is a set of free wargames rules where the units are fire teams and squads. Soldiers are represented individually.
Once available as a commercial rules set — and a nice one it was — Knights and Knaves now is available as a download. Also available are the
More Knights & Knaves and Castles, Cogs & Chevauch�es expansions.