That Girl Guides served as spies in World War I London?
In the early days of ‘the war to end all wars,’ the MI5 (Great Britain’s version of homeland security) desperately needed someone to carry sensitive information through different sections of Waterloo House, their main base of operations. With the men at the front and women taking their jobs in the workplace, the intelligence agency turned to the Boy Scouts for help. But the boys proved to be too rowdy and unable to keep their work secret. So the Girl Guides were recruited and proved to be a valuable asset over the next four years. For their service, they were invited to attend the signing of the Treaty of Versailles in 1919.