On March 15th 1939, the German army occupied Czechoslovakia. Witness hears the story of one young boy who watched the German troops march into Prague and who later escaped on the Kindertransport. These were trains that brought thousands of mostly Jewish children out of Austria, Germany, Poland and Czechoslovakia, without their parents, to safety in Britain. That young boy went on to become a British MP and today sits in Britain's House of Lords; Alf Dubs tells Louise Hidalgo his story. Picture: German troops enter the centre of Prague on 15th March 1939; the German leader Adolf Hitler visited the city the next day. (Credit: AFP/Getty Images)