Can anyone deny the George Washington was a traitor to the British throne? Of course he was! Robert E’ Lee led a war against the USA but he wasn’t a traitor? Impossible!
He didn't lead a war against the USA!
He led an army defending the Confederacy from the US invasion.
He didn’t lead a war against, he made it quite clear when asked to be the union general that he could not lead an army against his own state and therefore will defend his own state