This study examines General James N. Mattis's staffing philosophies, the influence of history on his operational planning and execution, and his general command and leadership philosophies using Task Force 58 as a formative base. A brief look at his time commanding the 1st Marine Division in Operation Iraqi Freedom (OIF) examines whether his philosophies and concepts evolved or remained consistent. A chapter dedicated to his command philosophies and leadership explores common themes that were present during both periods and their influence on his later generalship. General Mattis is an iconic figure in recent Marine Corps history and is known by many nicknames sucsh as Mad Dog and the Warrior Monk. He gets the latter because of his intense love and study of military history, leadership, and the art of war. He had humble beginnings; born in a small town in the Pacific Northwest at the base of the Columbia River which had deep-rooted agricultural ties and a nuclear industry.