Britain declares war on Germany

Event
Sunday, 3 September, 1939

Following the invasion of Poland by Germany on 1 September 1939, the United Kingdom and France declared war on Germany.

Below: The Prime Minister, Neville Chamberlain, raising his hat to the crowd as he left 10 Downing Street on the day that Britain declared war on Germany, 3 September 1939.

THE OUTBREAK OF THE SECOND WORLD WAR, SEPTEMBER 1939
THE OUTBREAK OF THE SECOND WORLD WAR, SEPTEMBER 1939© IWM (HU 5538)

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