How did a tiny village in the Korean mountains come to symbolise the north and south split? The answer lies in the year 1953, when a piece of paper was signed to end what became known as The Forgotten War. But Colin Thackery, Korean War veteran and oldest ever winner of Britain's Got Talent, remembers it well. Memories of gunfire, bodies, starving children, American soldiers playing the piano, frostbite. It's a remarkable story.

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