who is american sniper written about
American Sniper. This article is about the film. For the book on which it is based, see American Sniper (book). American Sniper is a 2014 American biographical war drama 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.