'Blinker' Hall Spymaster by David Ramsay - 9780752453989

'Blinker' Hall SpymasterThe Man Who Brought America into World War I\nAuthor(s): David Ramsay\nFormat: Paperback\nPublisher: The History Press Ltd, United Kingdom\nImprint: The History Press Ltd\nISBN-13: 9780752453989, 978-0752453989\nSynopsis\nAdmiral Sir Reginald 'Blinker' Hall, the Director of Naval Intelligence (DNI) for most of the First World War, described as 'a genius in his own sphere and brilliantly successful', was one of the outstanding if largely unrecognized naval leaders of that war.\n\nNaval intelligences ability to read and analyse German naval and diplomatic signals on a daily basis was a significant factor in the allied victory. The Germans never realized that their codes had been broken. The revelation of the Zimmermann Telegram, surely one of the most exciting and significant events in the history of intelligence, astutely handled by Hall, was the catalyst that brought America into the war in April 1917. The German unrestricted submarine warfare campaign was the.