In 1943, while serving the U.S. during WWII, his plane was shot down over the Pacific and he was captured by the Japanese military.
After surviving repeated torture as a prisoner of war, Louis suffered from nightmares brought on by post traumatic stress. His relationship with his wife and family was falling apart until he was invited to the 1949 Billy Graham crusade in Los Angeles where he became a born-again follower of Christ.
Here's sermon that changed Zamperini's Life:
He was a guest on the original Haven of Rest in 1949 before we had him back after he turned 90 and released the best selling book Unbroken. No matter what you asked Louis Zamperini, he would always give you an answer that led to Jesus.