Beyond the battlefield, Kyle faced challenges as he transitioned back into civilian life, sharing his experiences in a controversial memoir that inspired the 2014 film, American Sniper. In 2012, Chris Kyle published his memoir, American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History, which quickly became a bestseller. Chris Kyle’s story reached a wider audience with the 2014 film adaptation of American Sniper.