Well when i first played it, i was overwhelmed with the size of command. (Start with Brigade, its much easier until you get hang of command, you can go up to Division, Corps, or entire Army). I literally tried my best to outlast the scenario and when it ends, i just go to bed. All pooped out. But when i got hang of it, i literally play it all day with all the great mods and additions they offer to keep you busy all day.
Just downloaded the napoleonic mod today and tried it out. I liked it so far, would like to try it up against or with humans instead of AI.
I once played 5 hours straight commanding A.P. Hill Corp and won the battle of Gettysburg in one day instead of historically (3 days)