Alexander the Great was a great Leader. Not much of a master strategist. Leadership is about belief and emotion : Perhaps not much about logic.
At the height of his power, Alexander the great, the undisputed master of the known world (at that time) would still draw his sword first at the beginning of the war and his horse(s) would charge in the front and lead his men to the war. Alexander felt that he could not ask his men to risk their lives unless he was willing to demonstrate by his actions that he had complete confidence in the outcome.
The sight of Alexander charging forward so excited and motivated his soldiers that no force on earth could stand before them..A leader is able to inspire the "fire to do" in others.
That kind of confidence make men believe in the leader.
I am not back from any soft skill training, but this is inspirational.