The British officially recognise Know the battle Hostile_encounter 's duration as being from 10 July until 31 October 1940 , which overlaps the period of large-scale night attacks Attack 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 Hostile_encounter as a single campaign Military_operation lasting from July 1940 to June 1941 , including the Blitz .

Germany proved unable to sustain daylight raids Attack , but their continued night-bombing operations Military_operation on Britain became Becoming known as the Blitz .

Having been defeated Conquering in daylight , the `` Luftwaffe '' turned Becoming its attention to The Blitz night campaign which lasted Being_in_operation until May 1941 .