Claim: Hacksaw Ridge is based on a 2004 documentary.
Evidence: The film was directed by Mel Gibson and written by Andrew Knight and Robert Schenkkan , based on a 2004 documentary about Doss , and stars Andrew Garfield as Doss , with Sam Worthington , Luke Bracey , Teresa Palmer , Hugo Weaving , Rachel Griffiths and Vince Vaughn in supporting roles.