“That brings us back to the overwhelming numbers-and-resources interpretation, which at least had the merit of recognizing the large external aspect of Confederate defeat. But the deficiencies of that interpretation remain. Another category of analysis with an external dimension, though, might seem to resolve the dilemma of explanation. This one focuses on leadership. Numerous historians both northern and southern — and British as well, for they have paid a lot of attention to the American Civil War — have argued that the North developed superior leadership [generalship, logistics and political] which became the main factor in ultimate Union victory. And yet — and yet — it should not be uncritically accepted. … On more than one occasion the outcome seemed to hang in the balance because of incompetent northern military leadership.”
— Why the Confederacy Lost, 1992