I reading several AARs, I picked up an intriguing ideas: some of my defenders being placed in the city/redoubt/fortress; others, outside in countryside. Now, I do get the first one, place my troops in the garrison. But the second seems problematic--The Army of Tenn (180 men) besieged Munfordville (where I nearly 800). Theoretically, none of troops were in the city/fortress. On the second and third rounds, I upped the aggression of my troops but to no avail--they never attacked the CSA smaller stack. I would assume that the besieging army would be sitting ducks for a flanking attack by an Division not inside.
What am I missing, or doing wrong here?