quality:correction, linguistic:paraphrasing, stylistic:style_transfer
Propaganda

Propaganda was an important element of the air war which began to develop over Britain from 18 June 1940 onwards, when the Luftwaffe began small, probing daylight raids to test RAF defences. One of many examples of these small-scale raids was the destruction of a school at Polruan in Cornwall, by a single raider. Into early July, the British media's focus on the air battles increased steadily, the press, magazines, BBC radio and newsreels daily conveying the contents of Air Ministry communiques. The German OKW communiques matched Britain's efforts in claiming the upper hand.

Central to the propaganda war on both sides of the Channel were aircraft claims, which are discussed under 'Attrition statistics' (above). These daily claims were important both for sustaining British home front morale and persuading America to support Britain, and were produced by the Air Ministry's Air Intelligence branch. Under pressure from American journalists and broadcasters to prove that the RAF's claims were genuine, RAF intelligence compared pilots' claims with actual aircraft wrecks and those seen to crash into the sea. It was soon realised that there was a discrepancy between the two, but the Air Ministry decided not to reveal this. In fact, it was not until May 1947 that the actual figures were released to the public, by which time it was of far less importance. Many though refused to believe the revised figures, including Douglas Bader.

The place of the Battle of Britain in British popular memory partly stems from the Air Ministry's successful propaganda campaign in July–October 1940, and its valorisation of the defending pilots from March 1941 onwards. The 3d pamphlet The Battle of Britain sold in huge numbers internationally, leading even Goebbels to admire its propaganda value. Focusing only upon the fighter pilots, with no mention of RAF bomber attacks against invasion barges, the Battle of Britain was soon established as a major victory for Fighter Command. This inspired feature films, books, magazines, works of art, poetry, radio plays and MOI short films.

The Air Ministry also developed the Battle of Britain Sunday commemoration, supported a Battle of Britain clasp for issue to the pilots in 1945 and, from 1945, Battle of Britain Week. The Battle of Britain window in Westminster Abbey was also encouraged by the Air Ministry, Lords Trenchard and Dowding on its committee. By July 1947 when the window was unveiled, the Battle of Britain had already attained central prominence as Fighter Command's most notable victory, the fighter pilots credited with preventing invasion in 1940. Although given widespread media coverage in September and October 1940, RAF Bomber and Coastal Command raids against invasion barge concentrations were less well-remembered.