Alastair Denniston

Alastair Denniston

Author: Joel Greenberg

Publisher: Grub Street Publishers

Published: 2017-07-30

Total Pages: 278

ISBN-13: 1526709147

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“The expertly researched biography of the man who created and led the British intelligence organization best known for cracking the Nazi’s codes.” —Midwest Book Review Some of the individuals who played key roles in the success of Bletchley Park in reading the secret communications of Britain’s enemies during the Second World War have become well-known figures. However, the man who created and led the organization based there, from its inception in 1919 until 1942, has, surprisingly, been overlooked—until now. In 1914 Alastair Denniston, who had been teaching French and German at Osborne Royal Navy College, was one of the first recruits into the Admiralty’s fledgling codebreaking section that became known as Room 40. There, a team drawn from a wide range of professions successfully decrypted intercepted German communications throughout the First World War. After the Armistice, Room 40 was merged with the British Army’s equivalent section—MI1—to form the Government Code and Cypher School (GC&CS). Initially based in London, from August 1939, GC&CS was largely located at Bletchley Park, with Alastair Denniston as its Operational Director. With the support and assistance of both the Denniston family and GCHQ, Joel Greenberg, author of Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence, has produced this absorbing story of Commander Alexander “Alastair” Guthrie Denniston OBE, CBE, CMG, RNVR, a man whose death in 1961 was ignored by major newspapers and the very British intelligence organization that was his legacy. “An enthralling account of Alastair Denniston and his contribution to modern electronic intelligence. This book follows from his excellent biography of another great of signals intelligence, Gordon Welshman.” —Fire Reviews


Thirty Secret Years

Thirty Secret Years

Author: Robin Denniston

Publisher: Polperro Heritage Press

Published: 2012-01-01

Total Pages: 190

ISBN-13: 0954913752

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The story of how one man, working in obscurity and total secrecy, influenced the course of world history over 30 years of war and peace


Oxford Handbook of Ophthalmology

Oxford Handbook of Ophthalmology

Author: Alastair K. O. Denniston

Publisher: Oxford University Press

Published: 2018-05-24

Total Pages: 1249

ISBN-13: 019252674X

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Fully revised and updated throughout, the fourth edition of the Oxford Handbook of Ophthalmology now includes free access to the ophthalmic online media bank, a selection of high-quality clinical images and videos for a wide breadth of key ophthalmic diseases. Clear, concise, and practical, this handbook provides immediate access to the detailed clinical information you need, in casualty, clinic, theatre, and on the wards. The core of the book comprises a systematic synopsis of ophthalmic disease directed towards diagnosis, interim assessment, and ongoing management. Assessment boxes for common clinical conditions and algorithms for important clinical presentations illustrate this practical approach. The information is easily accessible, presented in a clear format with areas of importance highlighted. Key sections for the trainee include: Clinical Skills, Aids to Diagnosis, Investigations and their Interpretation, Perioperative Care, Theatre Notes and Therapeutics. The wider practise of eye-care is supported by expanded chapters on Refractive Ophthalmology, Vision in Context, Evidence Based Ophthalmology and Resources for Ophthalmologists. Now including newer treatments across a range of specialities such as SMILE, gene-therapy and retinal prostheses, as well as greater emphasis on the evidence underlying current clinical practice and guidelines, this handbook has never been more essential for all those working in eye-care. Whether you want to learn about patient-reported outcomes, identify a surgical instrument, interpret a statistical test, or diagnose and treat ophthalmic emergencies, you will find it here. Whatever your role in caring for patients with eye disease: ophthalmologist, optometrist, orthoptist, ophthalmic nurse, or other health profession - discover for yourself why this handbook has become the 'go-to' resource for tens of thousands of eye-care professionals around the world.


Geniuses at War

Geniuses at War

Author: David A. Price

Publisher: Knopf

Published: 2021-06-22

Total Pages: 257

ISBN-13: 0525521542

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The dramatic, untold story of the brilliant team whose feats of innovation and engineering created the world’s first digital electronic computer—decrypting the Nazis’ toughest code, helping bring an end to WWII, and ushering in the information age. • Winner, Institute of Electrical and Electronics Engineers Middleton Award for "a book ... that both exemplifies exceptional scholarship and reaches beyond academic communities toward a broad public audience." • A Kirkus Best Book of 2022 • Planning the invasion of Normandy, the Allies knew that decoding the communications of the Nazi high command was imperative for its success. But standing in their way was an encryption machine they called Tunny (British English for “tuna”), which was vastly more difficult to crack than the infamous Enigma cipher. To surmount this seemingly impossible challenge, Alan Turing, the Enigma codebreaker, brought in a maverick English working-class engineer named Tommy Flowers who devised the ingenious, daring, and controversial plan to build a machine that would calculate at breathtaking speed and break the code in nearly real time. Together with the pioneering mathematician Max Newman, Flowers and his team produced—against the odds, the clock, and a resistant leadership—Colossus, the world’s first digital electronic computer, the machine that would help bring the war to an end. Drawing upon recently declassified sources, David A. Price’s Geniuses at War tells, for the first time, the full mesmerizing story of the great minds behind Colossus and chronicles the remarkable feats of engineering genius that marked the dawn of the digital age.


The Lost World of Bletchley Park

The Lost World of Bletchley Park

Author: Sinclair McKay

Publisher: Aurum Press Limited

Published: 2013-11-01

Total Pages: 195

ISBN-13: 1781311919

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In "the lost world of Bletchley Park", Sinclair McKay tells the story of the park from its pre-war heyday, to its late 20th century resurrection to play host to both Antiques Roadshow and the Queen. With special access to the Park's archives, the 200 illustrations include many previously unseen and unauthorized photographs of Wrens and codebreakers minding machines or simply relaxing by the lake soaking up the sunshine.


Allied and Axis Signals Intelligence in World War II

Allied and Axis Signals Intelligence in World War II

Author: David Alvarez

Publisher: Routledge

Published: 2013-11-05

Total Pages: 269

ISBN-13: 1135262578

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The importance of codebreaking and signals intelligence in the diplomacy and military operations of World War II is reflected in this study of the cryptanalysts, not only of the US and Britain, but all the Allies. The codebreaking war was a global conflict in which many countries were active. The contributions reveal that, for the Axis as well as the Allies, success in the signals war often depended upon close collaboration among alliance partners.


The Forgotten Giant of Bletchley Park

The Forgotten Giant of Bletchley Park

Author: Harold Liberty

Publisher: Pen and Sword Military

Published: 2022-07-20

Total Pages: 317

ISBN-13: 1399089625

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In recent years, the work of the Bletchley Park codebreakers has caught the public’s imagination with books and films. While men such as Alan Turing and Dilly Knox have been recognized, Brigadier John Tiltman has been hardly mentioned. This overdue biography reveals that ‘The Brig’, as he was known, played a key role. After distinguished Great War military service, he established himself as a skilled codebreaker between the Wars, monitoring Russian and other unfriendly powers’ messages. During World War Two he was regarded as the most versatile of cryptographers, cracking a range of codes including Japanese ones. He made the first breakthrough against the German High Command Lorenz system and what he found led to the creation of machines including Colossus, the first recognisable computer. His lack of recognition may be down to his apparent lack of association with Enigma but, in truth, he was closely involved at the start. In addition to his cryptological brilliance, ‘The Brig’ was a gifted communicator and team-builder whose character combined charm, intelligence, determination and common sense. He was key to building the special relationship with our American partners both during and after the war. Harold Liberty’s biography shines light on a man whose contribution was essential to Britain’s survival and triumph in the Second World War.


The Codebreakers of Bletchley Park

The Codebreakers of Bletchley Park

Author: Dermot Turing

Publisher: Arcturus Publishing

Published: 2020-03-15

Total Pages: 272

ISBN-13: 1839404744

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'Turing writes on codebreaking with understandable authority and compelling panache.' - Michael Smith, bestselling author of Station X. At Bletchley Park, some of Britain's most talented mathematicians, linguists, and intellectuals were assembled to break Nazi codes. Kept secret for nearly thirty years, we have now come to realise the crucial role that these codebreakers played in the Allied victory in World War II. Written by Dermot Turing - the nephew of famous codebreaker Alan Turing - this illustrated account provides unique insight into the behind-the-scenes action at Bletchley Park. Discover how brilliant and eccentric individuals such as Dilly Knox, Alan Turing and Joan Clarke were recruited, the social life that grew up around the park, and how they dealt with the ever-present burden of secrecy. Including a foreword by Professor Christopher Andrew of Cambridge University, author of MI5's official history The Secret World, this book brings to life the stories of the men and women who toiled day and night to crack the seemingly unbreakable enigma code.


Seizing the Enigma

Seizing the Enigma

Author: David Kahn

Publisher: Frontline Books

Published: 2012-02-02

Total Pages: 513

ISBN-13: 1783378581

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“An absorbing and thoroughly well documented account” of WWII naval intelligence and the Allied hunt for the Nazi code machine known as the Enigma (Warship). From the start of World War II to mid-1943, British and American naval forces fought a desperate battle against German submarine wolfpacks. And the Allies might have lost the struggle at sea without an astounding intelligence coup. Here, the author brings to life the race to break the German U-boat codes. As the Battle of the Atlantic raged, Hitler’s U-boats reigned. To combat the growing crisis, ingenious amateurs joined the nucleus of dedicated professionals at Bletchley Park to unlock the continually changing German naval codes. Their mission: to read the U-boat messages of Hitler’s cipher device, the Enigma. They first found success with the capture of U-110,—which yielded the Enigma machine itself and a trove of secret documents. Then the weather ship Lauenburg seized near the Arctic ice pack provided code settings for an entire month. Finally, two sailors rescued a German weather cipher that enabled the team at Bletchley to solve the Enigma after a year-long blackout. In “a highly recommended account with a wealth of materials” Seizing the Enigma tells the story of a determined corps of people who helped turn the tide of the war (Naval Historical Foundation).