The Hardest Day, 18 August 1940: Battle of Britain

For approximately ten weeks in 1940, the fate of Britain depended entirely on the Royal Air Force. With her army almost destroyed at Dunkirque, her allies in Europe defeated, Britain stood alone. German raids on RAF airfields almost crippled her ability to defend herself but with the tactics used by Air Chief-Marshall Dowding and Air Vice-Marshall Park, as well as a primitive form of radar (a British invention), a handfull of incredibly brave pilots saved the island nation from invasion.