Gimme a break. Benedict Arnold betrayed the Revolutionary cause because he was miffed that his brilliant conduct at Saratoga was not appreciated. Robt. E. Lee voluntarily gave up the command of the Union forces for idealistic principles, namely that State sovereignty was more important than allegiance to a “Union” to which his State and its people had voluntarily shed their attachment, just as Washington et al. shed theirs to the British empire for which they had fought. There is no comparison whatsoever between Lee and Arnold.
Please see my post above.