The Blitz was the sustained bombing of Britain by Nazi Germany between 7 September 1940 and 10 May 1941, in World War II. While the "Blitz" hit many towns and cities across the country, it began with the bombing of London for 57 consecutive nights.
By the end of May 1941, over 43,000 civilians, half of them in London, had been killed by bombing and more than a million houses were destroyed or damaged in London alone.
Civilians, particularly children, were moved to rural areas thought to be less at risk from the German bombing of cities and military areas.
Operation Pied Piper on 1 September 1939 moved more than 1.5 million people. Further evacuations occurred from the south and east coast in June 1940, when a sea invasion was expected, and from cities after the Blitz began in September 1940.