He made many blunders. He was good. Great, not really.
Great Generals win Empires.
“Great Generals win Empires.”
Like Napoleon?
In Russia?
Or at Waterloo?
BTW, many Great Generals had no desire to win Empires. Some victorious countries did not seek Empires.
He wasn’t trying for Empire
He was trying to make the North go home
Not comparable
He was blessed with a succession of cowards, blunderers, and buffoons the United States Army sent against him: McClellan, Burnside, Hooker, Meade. Once Grant took command and stepped off on the Wilderness Campaign, Lee was trapped in 9 weeks and the rest was siege and endgame stalling.