American Sniper is a 2014 American biographical war film directed by Clint Eastwood and written by Jason Hall. It is loosely based on the memoir American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History (2012) by Chris Kyle, with Scott McEwen and Jim DeFelice. The film follows the life of Kyle, who became the deadliest marksman in U.S. military history with 255 kills from four tours in the Iraq War, 160 of which were officially confirmed by the Department of Defense. While Kyle was celebrated for his military successes, his tours of duty took a heavy toll on his personal and family life. The film stars Bradley Cooper as Kyle and Sienna Miller as his wife Taya, with Luke Grimes, Jake McDorman, Cory Hardrict, Kevin Lacz, Navid Negahban and Keir O'Donnell in supporting roles.