Winter Sale: Choices

[Sir John Cope]

I intend to take advantage of the impending JTS winter discount to acquire one or more of the Napoleonic series. 

I enjoy large scenarios, and I take particular pleasure in grand tactical options - as opposed to scenarios where the opposing forces are already deployed and all that is left to the player is to simply slog forward and fight the tactical battle.

So what are my options for games which provide some of the larger battles of the era with some room for the player to maneuver against the enemy before closing to pistol shot?