The Battle of Britain was a military campaign of the Second World War, in which the Royal Air Force defended the United Kingdom against large-scale attacks by the German Air Force . It has been described as the first major military campaign fought entirely by air forces.
The British officially recognise the battle's duration as being from 10 July until 31 October 1940, which overlaps the period of large-scale night attacks known as the Blitz, that lasted from 7 September 1940 to 11 May 1941. German historians do not accept this subdivision and regard the battle as a single campaign lasting from July 1940 to June 1941, including the Blitz.
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