2/2. The Battle of Britain was Hitler's first and potentially most important defeat. It defined the course of the war, forcing him to make a series of decisions that guaranteed his own destruction. In this two-part series, we'll trace this monumental story from the dark days of the defeat of France, through to the triumph of RAF Fighter Command in the skies above Britain.

In Part 2 Dan takes us through the battle's crescendo, as British, Commonwealth and European pilots took to the skies time and again to contest Luftwaffe raids. He explains why Hitler decided to turn away from this attritional battle and direct his rage against London - and how that terrible decision affected the course of the war.

Written and produced by Dan Snow, and edited by Dougal Patmore.

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