James N. Mattis

James Norman Mattis is an American military officer who served as the 26th United States secretary of defense from 2017 to 2019. A retired Marine Corps four-star general, he commanded forces in the Persian Gulf War, the War in Afghanistan, and the Iraq War.
Mattis was commissioned in the Marine Corps through the Naval Reserve Officers' Training Corps after graduating from Central Washington University. A career Marine, he gained a reputation among his peers for intellectualism and eventually advanced to the rank of general. From 2007 to 2010, he commanded the United States Joint Forces Command and concurrently served as NATO's Supreme Allied Commander Transformation. He was commander of United States Central Command from 2010 to 2013, with Admiral Bob Harward serving as his deputy commander. After retiring from the military, he served in several private sector roles, including as a board member of Theranos.
Mattis was nominated as secretary of defense by president-elect Donald Trump, and confirmed by the Senate on January 20, 2017.