Napoleonic Battlefield Commander is a set of free wargames rules for the Napoleonic era. The author writes:
This is a set of rules to allow the major land battles of the Napoleonic Era to be fought on the wargames table in a quick and timely manner. In the game, each Player takes on the role of a commander on one side of a major battle, real or hypothetical. The rules take a “hands-off” approach to the way the Player can influence the outcome of individual Close Combats etc. It is the role of the Player to determine a strategy for the battle and move his Formations and Units in accordance with that. He will have to trust to the abilities of the commanders below him in the chain-of-command (shown by frequent throwing of dice) and trust that his plan of action will enable him to overcome his opponent using planning and tactics rather than the rules. These rules started out as amendments to the Grande Armee ruleset, but have grown considerably to the point that they now are very different from the original.