10 Key Dates in World War Two

At 11.02 am on August 9 1945, America dropped the world's most powerful atomic bomb on Nagasaki. The Japanese port city was flattened to the ground 'as if it had been swept aside by a broom', with over 70,000 people killed. At that time, hundreds of Allied prisoners of war were working close to the bomb's detonation point, as forced labourers in the shipyards and foundries of Nagasaki. Having survived four years of malnutrition, disease, and brutality, they now faced the prospect of the US dropping its second atomic bomb on their prison home. In this episode James is joined by John Willis, whose new book Nagasaki: The Forgotten Prisoners paint a vivid picture of defeat, endurance, and survival against astonishing odds. Warning: The events recounted in this episode may be distressing to some listeners

Dan Snow pays a visit to the Churchill War Rooms, walking in the footsteps of the great man and his many colleagues during the Second World War.