Battle of Britain Day

Battle of Britain Day was a Second World War air battle fought on 15 September 1940 during the Battle of Britain between the German Luftwaffe and British Royal Air Force (RAF). On that day, the Luftwaffe launched its largest and most concentrated attack against London in the hope of drawing out the RAF into a battle of annihilation. Around 1,500 aircraft took part in the air battles, which lasted until dusk. The action was the climax of the Battle of Britain. The RAF's Fighter Command defeated the German raids; the Luftwaffe formations were dispersed by a large cloud base and failed to inflict severe damage on the city of London. In the aftermath of the raid, Hitler postponed Operation Sea Lion. Having been defeated in daylight, the Luftwaffe turned its attention to the Blitz night campaign, which lasted until May 1941.

Final major attempt by the Luftwaffe to draw the RAF into battle.