August 4 to November 1, 2020
On 1 September 1939 Germany invaded neighboring Poland, triggering the start of World War Two. Eighty years ago, on 9 April 1940, German troops invaded Denmark and Norway. They subsequently swept through Luxembourg, Belgium, the Netherlands and, by mid-June, France. In summer 1940 the Luftwaffe (German Air Force) began to launch bombing raids in Britain.