I would say you are not choosing the most interesting option if you want to play the Russians in the 1806 scenario. Why not try the Russians in the Grand campaign instead, that's the meat of the game. If you want to practice, take the French in the 1806 campaign, to get an idea on how warfare is done. But you do yourself a disservice by choosing this nation, in this scenario.
AGEOD Team - Lead Developer
Makers of Empires, ACW2, EAW, WIA, WON