VIDEO: 'Unbroken' behind-the-scenes trailer

Directed by Angelina Jolie, 'Unbroken' tells the true story of Olympic runner and war hero Louie Zamperini (Jack O'Connell) who, along with two other crewmen, survived 47 days at sea in a life raft after a near-fatal WWII plane crash, only to be caught by the Japanese and sent to a prisoner of war camp. In cinemas December 26.