The story

For 63 years, Martin Vogel longed for information about how his only brother -- his best friend and a fellow U.S. soldier -- died in World War II.

He knew that Bernard "Jack" Vogel had tried to escape from a Nazi prisoner-of-war camp, but the details were sketchy. Martin was so devastated after the war, he didn't ask too many questions. But as time passed, his thoughts often drifted to his brother.

"A month doesn't go by that it doesn't come up in the course of my own thoughts," said Martin Vogel, now 82. "But to me, it's always there: What if this? Why didn't he do this? And what happened to him? And that's what bothered me." Read full article »

CNN's Thelma Gutierrez and Traci Tamura contributed to this report.

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