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Ultra Versus U-Boats

Ultra Versus U-Boats PDF Author: Roy Conyers Nesbit
Publisher: Casemate Publishers
ISBN: 1783409274
Category : History
Languages : en
Pages : 471

Book Description
Keeping the Atlantic sea-lanes open was a vital factor in the fight against Nazi Germany. In the battle to protect merchant shipping from the menace of surface raiders and U-boats, Allied resolve and resources were tested to the utmost. The story of the extraordinary measures that were taken to combat the threat, at sea and in the air, has often been told. But there is one crucial element in this prolonged campaign that has still not been fully appreciated the role of code-breaking, in particular the decryption of secret signals transmitted by German Enigma machines. And this is the focus of Roy Nesbits fascinating new account of the Battle of the Atlantic. Using previously unpublished decrypts of U-boat signals, selected from the National Archives, along with historic wartime photographs, he tells the stories of the individual U-boats and describes their fate. Their terse signals reveal, perhaps move vividly than conventional communications could do, the desperate plight of the U-boatmen as they struggled against increasingly effective Allied countermeasures that eventually overwhelmed them.

Ultra Versus U-Boats

Ultra Versus U-Boats PDF Author: Roy Conyers Nesbit
Publisher: Casemate Publishers
ISBN: 1783409274
Category : History
Languages : en
Pages : 471

Book Description
Keeping the Atlantic sea-lanes open was a vital factor in the fight against Nazi Germany. In the battle to protect merchant shipping from the menace of surface raiders and U-boats, Allied resolve and resources were tested to the utmost. The story of the extraordinary measures that were taken to combat the threat, at sea and in the air, has often been told. But there is one crucial element in this prolonged campaign that has still not been fully appreciated the role of code-breaking, in particular the decryption of secret signals transmitted by German Enigma machines. And this is the focus of Roy Nesbits fascinating new account of the Battle of the Atlantic. Using previously unpublished decrypts of U-boat signals, selected from the National Archives, along with historic wartime photographs, he tells the stories of the individual U-boats and describes their fate. Their terse signals reveal, perhaps move vividly than conventional communications could do, the desperate plight of the U-boatmen as they struggled against increasingly effective Allied countermeasures that eventually overwhelmed them.

Studies in Intelligence

Studies in Intelligence PDF Author:
Publisher:
ISBN:
Category : Intelligence service
Languages : en
Pages : 588

Book Description


Decoding History

Decoding History PDF Author: W. Gardner
Publisher: Springer
ISBN: 0230510140
Category : History
Languages : en
Pages : 281

Book Description
The German attack on merchant shipping in the Second World War, known as the Battle of the Atlantic, was countered partly by code-breaking intelligence known as Ultra. The dramatic revelation of this factor in the middle 1970s resulted in many works giving this as the most important cause of Allied success.

One Day in August

One Day in August PDF Author: David O'Keefe
Publisher: Icon Books
ISBN: 1785786318
Category : History
Languages : en
Pages : 409

Book Description
'A lively and readable account' Spectator 'A fine book ... well-written and well-researched' Washington Times In less than six hours in August 1942, nearly 1,000 British, Canadian and American commandos died in the French port of Dieppe in an operation that for decades seemed to have no real purpose. Was it a dry-run for D-Day, or perhaps a gesture by the Allies to placate Stalin's impatience for a second front in the west? Historian David O'Keefe uses hitherto classified intelligence archives to prove that this catastrophic and apparently futile raid was in fact a mission, set up by Ian Fleming of British Naval Intelligence as part of a 'pinch' policy designed to capture material relating to the four-rotor Enigma Machine that would permit codebreakers like Alan Turing at Bletchley Park to turn the tide of the Second World War. 'A fast-paced and convincing book ... that clears up decades of misinformation about the ignoble raid' Toronto Star

Churchill's Greatest Fear

Churchill's Greatest Fear PDF Author: Richard Doherty
Publisher: Pen and Sword
ISBN: 1473879418
Category : History
Languages : en
Pages : 327

Book Description
The Battle of the Atlantic (Churchill's term) was arguably the pivotal campaign of the Second World War it was certainly the longest starting with the sinking of RMS Athenia on 3 September 1939 and ending with the torpedoing of SS Avon Dale on 7 May 1945.This superbly researched work covers all the major aspects of The Battle, balancing the initial advantages of Admiral Doenitz's U-Boat force, the introduction of the convoy system, the role of the opposing surface fleets and air forces, relative strengths and the all important technical developments. Intelligence particularly the Bletchley Park intercepts played an increasingly important part in the final outcome.The author concludes that May 1943 was the moment when the Allies seized the initiative and, despite desperate German efforts, never lost their advantage.Using official records, personal accounts and a wealth of historical research, this work gives the reader a splendidly concise yet broad account of the course of the campaign, the men who fought it on both sides and the critical moments and analysis of the outcome.

The Twilight of the U-Boats

The Twilight of the U-Boats PDF Author: Bernard Edwards
Publisher: Pen and Sword
ISBN: 1783379456
Category : History
Languages : en
Pages : 118

Book Description
“A gripping narrative” of the German submarines that nearly changed the outcome of World War II from the author of Dönitz and the Wolf Packs (Naval Review). In essence, this is the story of U-223, commanded by Karl-Jurgen Wächter from the time of her commissioning in Kiel in January 1943 through a murderous career to her eventual but dramatic demise in the Mediterranean in March 1944. At the same time, the book covers the declining fortunes of the U-boat arm as a whole from early 1943 when it seemed invincible and seriously threatened the Allies with defeat to the end of the war. “An intimate narrative, one driven by human endurance and frailty.” —Amsterdam Nautical College Newsletter

The Battle of the Atlantic and Signals Intelligence

The Battle of the Atlantic and Signals Intelligence PDF Author: David Syrett
Publisher: Boydell & Brewer
ISBN: 1351207679
Category : History
Languages : en
Pages : 479

Book Description
This book contains the U-boats situations and trends written by the staff of the Admiralty's Operational Intelligence Centre during the Second World War. Based largely on communications intelligence, the U-boat situations and trends were designed to inform a small number of senior officers and high officials of the latest events and developments in the Allied war against the U-boats. The Battle of the Atlantic and the war against the U-boats was the longest and the most complex naval battle in history. In this huge conflict which sprawled across the oceans of the world the U-boats sank 2,828 Allied merchant ships while the Allies destroyed more than 780 German U-boats. These documents relate on a weekly, and in some cases a daily, basis exactly what the Allies knew concerning the activities of the U-boats during the Battle of the Atlantic.

The Intelligence Revolution

The Intelligence Revolution PDF Author: Walter Theodore Hitchcock
Publisher:
ISBN:
Category : History
Languages : en
Pages : 384

Book Description


Exercising Control of the Sea

Exercising Control of the Sea PDF Author: Milan Vego
Publisher: Routledge
ISBN: 1000196054
Category : History
Languages : en
Pages : 340

Book Description
This book explains both the strategic and the operational aspects of exercising control of the sea. The struggle for sea control consists of three mutually related and overlapping phases: obtaining, maintaining and exercising sea control. It is in the phase of exercising sea control when one’s strategic or operational success is exploited; otherwise, the fruits of victories achieved would be wasted. This work describes the strategy of a stronger side in wartime after a desired degree of control has been obtained, which is followed by a discussion on the objectives and main methods used in exercising sea control. The remaining chapters explain and analyze in some detail each of the main methods of exercising sea control: defence and protection of one’s own and destruction/neutralization of the enemy’s military-economic potential at sea, capturing the enemy’s operationally important positions ashore, destroying/weakening the enemy’s military-economic potential ashore and supporting one’s ground forces in their offensive and defensive operations on the coast. This book will be of much interest to students of strategic studies, sea power and naval history.

If the Allies Had Fallen

If the Allies Had Fallen PDF Author: Dennis E. Showalter
Publisher: Skyhorse Publishing Inc.
ISBN: 1616085460
Category : History
Languages : en
Pages : 305

Book Description
Leading historians suggest what might have been if key events during World War II had the war gone differently.