http://clevelandcivilwarroundtable.c..._grant_won.htm
Here is a pretty interesting article justifying Grant's casualty rates and also making a strong case that it was Lee who was wrong. I admit I do not know much about US Civil War though I thought Grant's impressive Vicksburg Campaign seems to be overlooked by Grant's detractors. For argument sake what could Grant have done to lessen the casualties in Overland Campaign?