Most of the figures are Stone Mountain plus the odd one from Irregular Miniatures and Frei Korps. The Stone Mountain figures are very spindly and at the time I bought them I thought they looked suitably 18th Century making a nice change from the Minifigs style I was used to. The figures of Washington and his staff are from the excellent Frei Korps personality range.
I lived in Boston for 3 months towards the end of 1976 and there was plenty of bicentennial stuff going on at the time. That experience has led me to lean towards favouring the Americans in this particular conflict even though I am generally a royalist. Poor King George never got over losing the colonies and I can see why as New England is a spectacularly beautiful place. On the other hand would you really want to rule over a country that could be so wasteful with tea?