It is the head to head Grant-Lee Overland Campaign I refer to whereupon Grant (as a butcher) simply drove his men in a battle of attrition at Lee - regardless of casualties - knowing Lee could ill afford major losses. Grant had almost twice the casualties of Lee at the Wilderness and Spotsylvania... and (basis some reports) 7,000 casualties in twenty minutes at Cold Harbor.
Let me ask you this. If the situation was reversed, do you think that Lee would have hesitated for a moment to use the same tactics Grant did if he thought they would bring victory?
“7,000 casualties in twenty minutes at Cold Harbor”
That was out of an assault mounted by three corps (about 36-40,000 men.) Lee lost 7,000 casualties assaulting Cemetery Ridge at Gettysburg out of an attack force of 1 division and two additional brigades (about 12-13000 men). Grant is called a butcher for the assault at Cold Harbor. What does that make Lee.