He is neither a strategist nor is he schooled in the operational arts, nor is he a tactician, nor is he a general. Other than that he's a great military man. ↗
But I would defy anyone to go back over the years and tell me anyone whose career I've ruined, anyone whom I've driven out of the service, anyone I've fired from a job. ↗
You learn far more from negative leadership than from positive leadership. Because you learn how not to do it. And, therefore, you learn how to do it. ↗