The Fog of War: Eleven Lessons from the Life of Robert S. McNamara is a 2003 American documentary film about the life and times of former United States Secretary of Defense Robert S. McNamara directed by Errol Morris. The film includes an original score by Philip Glass. It won the Academy Award for Best Documentary Feature and the Independent Spirit Award for Best Documentary Feature.
The film consists of interviews with McNamara, detailing his life between 1961 and 1968 and the difficult career decisions he made during this period. The title refers to the uncertainty that descends over a battlefield once fighting begins.