Werner herzog film starring Christian Bale?

You're likely thinking of Rescue Dawn, a 2006 film directed by Werner Herzog and starring Christian Bale.

The film tells the true story of Dieter Dengler, a U.S. Navy pilot who was shot down over Laos during the Vietnam War and spent over 2000 days as a prisoner of war.

While the film was not a box office success, it has since gained a strong following for its intense and gripping story, as well as Herzog's signature style.