Here's my comment which Kevin writes about:
“If Grant had a drinking problem, the answer to your question could be that he was willing to sacrifice thousands of more men due to the fact his judgment was impaired by alcohol.”
As I further clarified (and which Kevin left out):
My comment was a rhetorical response to James's rhetorical question:
"What does it say about Confederate military prowess that they were beaten by a drunk?"
I think there are many who would label someone who drinks themselves unconscious a drunkard.
Again, as I said in my original post, perhaps one prefers degrees of the label.
However, Kevin did get one thing right:
As the argument goes Lee fought a traditional war of virtuous generals and civilized tactics while Grant and Sherman ushered in a new era of warfare that anticipated the blood baths of the twentieith century.