-—Part of Grant’s genius was his mastery of the all the various resources that were put at his disposal. Other parts included organiziation—especially where unorthodox solutions were required to solve difficult problems—and dogged determination.——
Yes. Also, Grant was incredibly cool under pressure. He almost always knew exactly what to do in any situation, and if he was surprised, he never panicked and made a poor decision.
"I am a damned sight smarter man than Grant. I know more about military history, strategy, and grand tactics than he does. I know more about supply, administration, and everything else than he does. I'll tell you where he beats me though and where he beats the world. He doesn't give a damn about what the enemy does out of his sight, but it scares me like hell. … I am more nervous than he is. I am more likely to change my orders or to countermarch my command than he is. He uses such information as he has according to his best judgment; he issues his orders and does his level best to carry them out without much reference to what is going on about him and, so far, experience seems to have fully justified him." -- William T. Sherman