What is greatness?

Most of the names on this list were indeed great men. Very few were great generals.

I'm skipping right over Isabella here and treating the question seriously. The goal of any warrior, any truly great general, should be to win the following peace. Alexander's empire collapsed on his death; Napoleon had his Waterloo; Hitler (even if we grant him generalship) ended up slow-roasting. On this list, Bolivar is the only one that won the peace; most of the former colonial nations of South America owe him an immense debt of gratitude.

I'd put Lee in the #2 spot; as a general, his record is nearly unparalleled, and the peace he won was a decent one.