Operational Studies Group
Sounds all thinky right? Like some secret squirrel group of guys in a government think tank somewhere discussing how to win the next war. It is and isn't. It's a game company who has the singular purpose of bringing the era of Napoleon to the game tabletop. I mean these guy go all the way back to 1794.
I recently had the luck of laying hands on a copy of Napoleon Against Russia 15 Aug - 24 Oct 1812. The campaign is covered in 4 battle scenarios: Smolensk, Valutino, Shevardino and Borodino.
On the face of it the rules and mechanics seem light to medium complexity with plenty of historical chrome. Along the lines of Hexasim title.