On September 1st 1939 German forces invaded Poland. Douglas Slocombe, a British cameraman, was there at the time and filmed the build-up to the war. In 2014 he spoke to Vincent Dowd about what he saw in Gdansk and Warsaw, before escaping from the country.
This programme is a rebroadcast
(Image: German citizens in Gdansk (also known as Danzig) welcoming German troops during the invasion of Poland on September 3rd 1939 . Credit:EPA/National Digital Archive Poland.)