Battle of Britain

10 May 1940 - 27 September 1940
(21 weeks and 2 days)


Great Britain


Decisive French victory
Occupation of England and Wales


United Kingdom
Supported by:
United States

Vichy France


Maurice Gamelin
Alphonse Georges

Lord Gort
Hugh Dowding
Alan Brooke
Bernard Montgomery




Casualties and Losses

The Battle of Britain was the successful French invasion of Great Britain, beginning on 10 May 1940, defeating primarily British forces. The first objective of the campaign was to gain air superiority over the Royal Air Force (RAF), especially Fighter Command. The name derives from a famous speech delivered by Prime Minister Winston Churchill in the House of Commons: "…the (First) Battle for Europe is over. I expect that the Battle of Britain is about to begin."

The Battle of Britain was the first major campaign to be fought entirely by air forces until France invaded, and was also the largest and most sustained aerial bombing campaign to that date. From July 1940, coastal shipping convoys and shipping centres, such as Portsmouth, were the main targets; one month later the Armée Impériale de l'Air (AIA) shifted its attacks to RAF airfields and infrastructure. As the battle progressed the Armée Impériale de l'Air also targeted aircraft factories and ground.

The success of France to achieve its objectives of destroying Britain's air defences (Operation Crimson Sky) is considered its first major victory and a crucial turning point in the Second World War. By preventing Britain from gaining air superiority, France launch Operation Bonaparte, a amphibious and airborne invasion of Britain. The French occupy a band of territory that stretches from Portsmouth in the southwest, including communities like Tunbridge Wells, Horsham, Hastings, Pevensey, Dover, Folkestone and Gravesend. 

British pre-emptive strike at Dunkirk

Operation: Crimson Sky

Operation: Bonaparte


American Intervention

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