In 2009, Rudolf Brazda, one of the last known survivors of the Pink Triangles, returned to the former site of Buchenwald concentration camp where he’d been imprisoned during World War Two, for being gay in Nazi Germany. In never previously broadcast recordings, taped by Jean-Luc Schwab, who wrote Rudolf’s biography, we hear Rudolf’s reaction to returning as a 95-year-old man. Jean-Luc Schwab who became friends with Rudolf in the last few years of his life, speaks to Reena Stanton-Sharma. This programme contains distressing details. (Photo: Rudolf Brazda. Credit: Frederick Florin/ Getty Images)

Despite facing malnutrition, starvation and disease, Christopher John Huckstep's father set up a school in the Japanese internment camp where his family was sent in 1943. Herbert Huckstep ensured the 350 children of Lunghwa Civilian Assembly Centre were taught a wide range of subjects using brown paper bags to write on. The school was called Lunghwa Academy and it had its own badge, motto and certificates. A syllabus was followed, exams were taken and there were even evening classes for adults. The Japanese set up more than 20 internment camps in China and Hong Kong holding an estimated 14,000 people, but it is not believed that such a sophisticated schooling system was established elsewhere. In spite of the many hardships, educational standards were kept so high that qualifications taken in the camp were later recognised by the Cambridge exam board when the exam scripts were taken to England after the war. Christopher John Huckstep shares his memories with Josephine McDermott. (Photo: Christopher John Huckstep and other children at Lunghwa Civilian Assembly Centre, Shanghai, in 1945. Credit: Oscar Seepol. Image courtesy of Susannah Stapleton and Special Collections, University of Bristol Library)

The 1 September 1939 was Kitty Baxter’s ninth birthday, it was also the day her life and millions of other people’s changed with the beginning of World War Two. Kitty was among the hundreds of thousands of children taken out of UK cities and into the countryside, away from the risk of German bombs. She’s been speaking to Laura Jones. (Photo: child evacuees leaving a London train station. Credit: Getty Images)

In 1937, Japanese forces entered Shanghai - spelling the end of a period when the Chinese city had been a thriving commercial centre governed by international powers and known as the "Paris of the East". During the eight-year Japanese occupation, local people in Shanghai endured starvation and brutal treatment; while foreigners scrambled to escape as their lifestyle of servants and glamourous parties slowly disappeared. Josephine McDermott speaks to Liliane Willens, who lived through the invasion and occupation of Asia's most international city. PHOTO: Japanese troops in Shanghai in 1937 (Ullstein Bild via Getty Images)

How sex, jazz and 'fake news' were used to undermine the Nazis in World War Two. In 1941, the UK created a top secret propaganda department, the Political Warfare Executive to wage psychological warfare on the German war machine. It was responsible for spreading rumours, generating fake news, leaflet drops and creating fake clandestine German radio stations to spread misinformation and erode enemy morale. We hear archive recordings of those involved and speak to professor Jo Fox of the Institute of Historical Research about the secret history of British "black propaganda". (Photo: The actress and singer Agnes Bernelle, who was recruited to be a presenter on a fake German radio station during the war)

Hear how the BBC reported the Allied invasion of Nazi-occupied France on June 6th 1944. The operation was a crucial step in the liberation of western Europe. Using original BBC reports from the time - from Chester Wilmot, Richard Dimbleby, Robin Duff, Ward Smith and Alan Melville - we tell the story of D-Day. Photo: D-Day Landings: US troops in an LCVP landing craft approach Omaha Beach in Colleville Sur-Mer, France, on June 6th 1944 (US National Archives)

Eyewitness accounts of the Allied landings on the coast of Normandy during World War Two on 6 June 1944. The massive operation was a crucial step in the liberation of western Europe from years of Nazi rule and the defeat of Hitler's Germany. In this episode, we present the accounts of veterans held in the BBC archive. Photo: The photo titled "The Jaws of Death" shows a landing craft disembarking US troops on Omaha beach, 6th June 1944 ( Robert Sargent / US COAST GUARD)

Japanese troops reached the Chinese city of Nanjing in December 1937. The violence that followed marked one of the darkest moments in a struggle that continued throughout WW2. Rebecca Kesby has been speaking to former General Huang Shih Chung, who survived the slaughter in Nanjing as a boy and then fought in China's war of resistance against the Japanese. Photo: Huang Shih-Chung as a young soldier.

At the end of WW2 much of Germany's capital had been destroyed by bombing and artillery. Almost half of all houses and flats had been damaged and a million Berliners were homeless. Caroline Wyatt has been speaking to Helga Cent-Velden, one of the women tasked with helping clear the rubble to make the city habitable again. Photo: Women in post-war Berlin pass pails of rubble to clear bombed areas in the Russian sector of the city. (Photo by Fred Ramage/Keystone/Getty Images)

Thousands of Allied troops parachuted into the Nazi-occupied Netherlands in September 1944. At that point, it was the most ambitious Allied airborne offensive of World War Two. British, American and Polish troops were dropped behind German lines in an attempt to capture a series of bridges on the Dutch/German border. Mike Lanchin has spoken to Hetty Bischoff van Heemskerck who, as a young woman, watched the Allied paratroopers come down close to her home in the city of Arnhem. (Photo: Allied planes and parachutists over Arnhem, Getty Images)