Hacksaw Ridge is a 2016 biographical war drama film directed by Mel Gibson and written by Andrew Knight and Robert Schenkkan, based on the 2004 documentary The Conscientious Objector. The film focuses on the World War II experiences of Desmond Doss, an American pacifist combat medic who, as a Seventh-day Adventist Christian, refused to carry or use a weapon or firearm of any kind.