Britain, Battle of was a decisive air conflict during World War II (1939-1945). Officers of the Luftwaffe (German air force) believed that British resistance could be reduced by the use of air power alone. They believed that an invasion would be possible, once Germany had destroyed the Royal Air Force (RAF).
The Battle of Britain began on July 10, 1940, when about 60 German aircraft attacked shipping in the English Channel. For the rest of the month, the Luftwaffe tested RAF defenses with repeated attacks on the Dover area. In August, the Luftwaffe extended its attacks to all the air bases in southern England. On August 15, it attacked Tyneside, in northeastern England, with 140 aircraft and launched 800 aircraft against RAF bases in the south. The RAF made 974 attacks on hostile aircraft and fought at least five major air actions. Each side exaggerated the other's aircraft losses, but the German High Command believed that the British Channel defenses had been effectively weakened.
In September, the Luftwaffe attacked London and the airfields of the Thames valley. An attack by 400 German aircraft started fires in the London docks, but 53 of the attackers were shot down by the RAF or by antiaircraft fire. On September 15, an enormous force of 1,300 German aircraft made a two-pronged attack against the London docks and the Southampton area. In cloudless skies, the air battle spread over the whole of southern England, and lasted all day. The RAF lost 27 aircraft and the Luftwaffe 56.
The most important result of the September 15 raid was that the German High Command realized it could not destroy Britain's air defenses. A last German effort with a force of 850 aircraft was beaten off by the British at the end of September. The great success of the British defense was largely due to the high quality of the fighter aircraft used--Spitfires and Hurricanes. Also important was the use of radar to give early warning of the approach and position of enemy aircraft.