Teresa Jue
December 11, 2014 AT 08:50 PM EST

When it came to finding an actor to portray WW2 hero Louis Zamperini, Unbroken director Angelina Jolie had to find “this person that the audience would root for.” Enter British actor Jack O’Connell, who managed to portray Zamperini’s life story through his times of Olympic triumph and the tortures he faced as a prisoner of war. Watch O’Connell’s featurette on Unbroken and hear how he embodied the challenges that Zamperini went through in his lifetime.

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