Major Ferguson, inventor of the breechloading rifle bearing his name, once drew a bead on Gen. George Washington and spared his life for that very reason, that gentlemen do not kill each other from ambush.
Ferguson was later killed at King’s Mountain by an American rifleman who didn’t care for such niceties.
I also found it amusing that Cornwell retconned Sean Bean’s Yorkshire accent into the series but they didn’t make him dye his hair. :)