RAF: The Royal Air Force: Battle for the Skies - The Definitive History
Strike Hard, Strike Sure
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By the end of the First World War the RAF had bombers that could fly to Berlin and back. For the first time in a thousand years British civilians found themselves under direct attack - by Zeppelin airships and Gotha bombers. The experience left an indelible impression on the public psyche, which was only exacerbated during the Blitz that began in the winter of 1940.