To mark the centenary of the end of World War One, Huw Edwards embarks on an emotional and explorative journey of remembrance. Travelling from Wales to the western front, Huw reveals the untold story behind the unique way in which Britain and the empire honour their fallen soldiers, who sacrificed their lives in the fight for freedom. The British government refused calls to return its war dead for burial, unlike France and America. This policy meant hundreds of thousands of families were effectively prevented from visiting the graves of their loved ones. A mothers' movement emerged fighting the ruling. But when it failed, bereaved families were left to come to terms with their grief in other ways. This is the story of the ritual of remembrance that occurs each year. The story of war memorials and commemorative events, and it's a story that still resonates so deeply, a hundred years on.