FmrPFCBob wrote:I understand what to defend and usually how best to do so, of course more experience will help, but the skill to destroy enemy forces eludes me.
The supply system is elusive compared games where you trace a supply line to some place, like the nation's capital. In WiA each city and town, along with many areas, produce supply. But not very much. Armies carry supply with the units and with supply wagons.
To destroy an army, it is most effective to force it (either by maneuver or brute force), into a situation such as Burgoyne faced at Saratoga, where it is weakened by lack of supply. Then it must attack against odds or allow you to eliminate it.
Otherwise, understand that the goal of destruction of the opposing main army is a multi-year goal. A strong British force holds Washington at arm's length until Washington has a reduced force due to winter absences or lack of a firm supply base. Then it goes in for the kill, multiple monthly battles.
The only way to destroy an opposing force in one blow is to catch it inside a fort or city, usually through siege; or to force it into very unfavorable terrain when it retreats from battle.
This is another way to hear what ERISS and KG Erwin are suggesting. For instance, using a leader with good attack skill or fort attack skill, combined with a naval blockade to cut supply, are usually needed to take Charleston and eliminate the defending forces.
Some thoughts.