Between May and October 1940, following Hitler's invasion of western Europe and the evacuation of the Expeditionary Force from Dunkirk, it was feared that the Germans would invade Britain. Over a million men volunteered for the Home Guard, beaches were covered with barbed wire, and pillboxes were scattered across the countryside. But even amid this frenzy of preparation, many Britons were indifferent to the perceived threat. In Don't Panic: Britain Prepares for Invasion, 1940, Mark Rowe presents the definitive account of Britain's 'finest hour'. Using diaries, official documents and many previously unpublished photographs, he recounts the history of the invasion that never was, including how Churchill interfered with the defence of Whitehall, the many false alarms such as the 'Battle of Bewdley', and the general who boasted his orders were 'grandiloquent bollocks'. Moreover, it shows how the people of Britain sought to defend their island against a truly formidable enemy, and how their preparations arguably prevented the invasion from ever taking place.