- **Born:** September 8, 1950 in Pullman, [[Washington]]
- **Parents:** John West Mattis and Lucille Proulx Mattis
- **Spouse:** Never married
- **Children:** None
- **Died:** Still living (age 74)
- **Highest Office:** U.S. Secretary of Defense (2017-2018)
- **Other Notable Positions:** General, U.S. Marine Corps (1969-2013), Commander of U.S. Central Command (2010-2013), Commander of NATO's Supreme Allied Command Transformation (2007-2009)
- **Party Affiliation:** Independent
- **Historical Note:** Known as the "Warrior Monk" for his scholarly approach to military strategy and bachelor lifestyle. Led Marines in Iraq and Afghanistan, earning respect for his tactical brilliance and care for troops. Served as [[Donald Trump]]'s first Defense Secretary but resigned over policy disagreements regarding [[Syria]] and treatment of allies. Famous for his extensive personal library and philosophical approach to warfare.