American Sniper is a 2014 American biographical war drama film directed by Clint Eastwood and written by Jason Hall. It is based on Chris Kyle's autobiography American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History. With 255 kills, 160 of them officially confirmed by the Pentagon, Kyle is the deadliest marksman in US military history. His widow Taya Renae Kyle was heavily involved with the making of the film.