Wait... You want to play a sim game based on Napoleonic era? Never heard of something like that but if you're interested in RTS games I would suggest you Cossacks II Napoleonic Wars...
screenshots
(http://www.2404.org/downloads/Cossacks%20II:%20Napoleonic%20Wars/11363491247.jpg)
(http://img.brothersoft.com/screenshots/softimage/c/cossacks_ii-_napoleonic_wars-67573-2.jpeg)