A retired United States Army general and public official. He served as Director of the Central Intelligence Agency from September 6, 2011, until his resignation on November 9, 2012. Prior to his assuming the directorship of the CIA, Petraeus served 37 years in the United States Army. His last assignments in the Army were as commander of the International Security Assistance Force (ISAF) and commander, U.S. Forces – Afghanistan (USFOR-A)