World War II took several different shifts in which at some points Germany expected certain victory and others certain defeat. Commonly known as D-Day in America, June 6th was the day that officially turned the tide against Germany and in favor of the Allies.
D-Day required immense planning for the massive invasion, yet tactical information of the land of France was hard to come by while under German occupation. To secretly gain information without letting people know an invasion was being planned, the BBC requested holiday pictures from the beaches of France.
Thousands of people submitted pictures thinking they were being used for some radio broadcast or entertainment. These pictures were used to plan the massive invasion and people didn’t even know!