Mattis is known for carrying out the COIN strategy. Before President Obama appointed him to replace General Petraeus on August 11, 2010, he commanded United States Joint Forces Command from November 9, 2007 to August 2010 and served as NATO's Supreme Allied Commander Transformation from November 9, 2007 to September 8, 2009 at the same time. Prior to that, he commanded I Marine Expeditionary Force, United States Marine Forces Central Command, and 1st Marine Division during the Iraq War.