Maybe not as good as RTW, but I sure hope that RTW also has this feature:
Quote Originally Posted by [b
Quote[/b] ] The player can determine so called tactical groups, composed of one or more units under direct control of a non-player character (AI). These NPCs will rely upon simplified player commands, such as move, advance, hold, guard etc. The player can retake full control over any tactical group at any time.
Although you can always pause the game and have complete control over all units, I think it will be very interesting to make 3 battles (after I made RTW into MTW again) and assign subcommanders to the other 2 battles. The games will be more hard fought and SP will almost feel like MP, depending on others instead of that lonely feel that I always have when it's 1on1 vs the AI.

Edit: for the non-historical fanatics ( ), a battle is also an army subdivision.