When Benjamin and Gabriel are watching over the disastrous Battle of Camden, at which Benjamin marks Gates' stupidity at fighting muzzle to muzzle with the Redcoats, the American army are all Continental infantry. Martin and Gabriel meet up with the defeated army in camp, in command now by Colonel Harry Burwell. Later in the movie, before the final battle, still traveling with the same army, it is stated that nearly half the army is militia, yet before they were all Continentals. The Battle of Camden was 16AUG1780 and the battle of Cowpens was fought on 17JAN1781. This is 5 months after Camden. During this time, the army had undergone many changes, among them was the addition of nearly 1300 militia. The TOTAL force at Cowpens was estimated at about 1900 men. This would put the total militia at over 50%. Furthermore, it is not stated that Gates only had regulars at Camden. Infact, of the 3,700 he had at Camden, only about 1500 were regular troops, with the remaining being militia.