Guard du Corps is a set of Napoleonic miniatures rules where 1 casting = 60 combatants and one turn = 15 minutes. Basing is as per Empire.
Rules: Napoleonics
Shot and Sail Napoleonic Naval Rules
The prolific Jim Wallman offers a set of free wargames rules for Napoleonic Warfare called Shot and Sail. In addition to the pdf fo the rules, you’ll need the zipped graphics of ship cards.
March of Eagles Fast Play Napoleonic Rules
Victrix Miniatures has released a set of free wargaming rules called March of Eagles, which is designed to go with their plastic boxed miniatures. They write:
We commissioned Barry Hilton, League of Augsburg, to write a set of fast play Napoleonic rules. The rules are quick to learn, very realistic, extremely bloody and a game can easily be played within an evening. At present we are only publishing rules for infantry combat but we will be releasing supplements to cover artillery and cavalry.
These March of Eagles rules are included in each box of Victrix figures along with lots of cut out counters that are an aid to the rules. We have also included a very useful set of measuring devices within the sprue frame.
Six Page Napoleonics
Lancer Runolfsson offers Six Page Napoleonics, a set of simple Napoleonics rules for a game in four to five hours.
De Gre and Sweet’s Rules For Napoleonic Wargames
Gerard De Gre and Charles Sweet were pioneering wargamers who produced a number of rules sets, including these Rules For Napoleonic Wargames, which is played on a 4 inch grid.