"This morning the British ambassador in Berlin handed the German government a final note stating that unless we heard from them by 11 o'clock that they were prepared at once to withdraw their troops from Poland, a state of war would exist between us. I have to tell you now that no such undertaking has been received, and that consequently this country is at war with Germany."⁠ British Prime Minister Neville Chamberlain, in a radio broadcast to the nation on 3 September, 1939. World War II was underway.⁠ "We have a clear conscience. We have done all that any country could do to establish peace. But the situation in which no word given by Germany's ruler could be trusted, and no people or country could feel itself safe, had become intolerable. And now that we have resolved to finish it, I know that you will all play your part with calmness and courage."⁠ Explore how Londoners reacted swiftly to the declaration in today's gettyarchive, with fears of an imminent attack on the domestic fron...