When Lincoln was told about the problem, Lincoln said, I can't spare him, he fights'.
Grant was a great general.
Not as great as Lee. Lee was the best military tactician in Western history.
“Grant was a great general.”
I like Grant, but the fact is that he sacrificed huge numbers of troops in ways the Confederacy could never afford to (and he knew it) to win the war. McClellan was replaced because he didn’t have the heart to do that.