There are sooo many great leaders. Alexander the Great, Julius Caesar, Napoleon, Hitler (great leader, not man), President Bush (hahahahahaha, I had to put it in there).
But, I believe my greatest strategist of all time would have to be Napoleon. Simply because of all the stories you hear of the man and how much of a genius he was in battle. Every move the enemy made, he predicted. Every time they moved left, his guys were already there. When they attacked, he dodged and attacked back. It was impossible for him to lose a battle. Then, during the Battle of Waterloo he was knocked off his horse at a key moment. He was unconscious for several minutes. Upon awakening, he saw the enemies tactics, ordered his mens to position themselves in the exact position to counter the enemies move.....but, alas, it was too later. The enemy was already in position and Napoleon lost. He was exiled. He then returned to France and regained a little bit of control for a short period of time. Only to be exiled again. For being one of the greatest military leaders of all time, he died one of the most shameful deaths. Alone on an island. He went from everything, to nothing. As all great military strategists have. I wonder if my real favorite strategist (Bush) will encounter the same fate...