During the Summer of 1940, Hitler’s Germany appeared unstoppable. The Nazis were masters of mainland Europe, in alliance with Stalin’s Russia and only the English Channel prevented an immediate invasion.

Britain stood alone. The BEF had been routed but, due to the ‘Dunkirk miracle’, most of her manpower had returned albeit without their transport and heavy equipment and guns. There was no doubt that the Nazis planned to invade – all intelligence pointed that way. In the event it never materialised, thanks to the outcome of the Battle of Britain and Hitler’s decision to invade Russia.