The concluding part of historian Dan Snow's documentary series tells the powerful and heroic stories of those who risked their lives on the beaches of Normandy, to save the world from Nazi Germany.
A Vietnam veteran has directly faced the demons of his past by returning to meet the family of the Vietnamese soldier he shot and killed on the battlefield 44 years before and return some of his belongings.
Vietnam's early history, its people, dynastic struggles and invasions.