James Norman "Mad Dog" Mattis (born September 8, 1950) is a retired United States Marine Corps general, who is the 26th and current United States Secretary of Defense under the Trump administration. He previously served as the 11th Commander of United States Central Command, the Unified Combatant Command responsible for American military operations in the Middle East, Northeast Africa, and Central Asia, from August 11, 2010, to March 22, 2013. Mattis was confirmed by 98-1 by the United States Senate on January 20, 2017, the first of Trump's cabinet to be confirmed.
Before President Obama appointed Mattis to replace General Petraeus on August 11, 2010, he previously commanded United States Joint Forces Command from November 9, 2007, to August 2010 and served concurrently as NATO's Supreme Allied Commander Transformation from November 9, 2007, to September 8, 2009. Prior to that, he commanded I Marine Expeditionary Force, United States Marine Forces Central Command, and 1st Marine Division during the Iraq War.