This book discusses the application of hypothesis testing to the practice of intelligence analysis. By drawing on longstanding procedures of scientific method, particularly hypothesis testing, this book strongly critiques standard intelligence analytic practices. It shows these practices to be inadequate, as they are illogical in terms of what formal philosophy says any intelligence analysts can realistically be expected to know, and for the future when analysts will face pressures to adapt to digital age modeling techniques. The methodology focuses on identifying and remedying analytic errors caused by analyst cognitive biases and by foreign denial and deception. To demonstrate that it is a practical tool, it walks analysts through a case study, step by step, to show how its hypothesis testing can be implemented. It also invites a comparative test in the real world with any other intelligence methodologies to assess its strengths and weaknesses in predicting the outcome of an actual "live" intelligence issue. This book will be of much interest to students of intelligence studies, public policy and national security, as well as practitioners.

During the Second World War, the only way Winston Churchill and his American counterpart Franklin D. Roosevelt could communicate was via a top secret transatlantic telephone link. All other Atlantic telephone cables had been disconnected to prevent the Germans intercepting information. Ruth Ive, then a young stenographer working in the Ministry of Information, had the job of censoring the line, and she spent the rest of the war listening in to the conversations across the Atlantic, ready to cut the line if anything was said that might compromise security. Ruth was sworn to secrecy about her work, and at the end of the war all documentation proving the existence of the telephone line was destroyed. It was not until 1995, when Churchill's private files were finally declassified, that Ruth was able to research her story. Now, for the first time, one of the Second World War's key workers describes the details of her incredible story, and the private conversations of two of the war's most important players can be revealed.

What makes a good missionary makes a good American spy, or so thought Office of Special Services (OSS) founder "Wild" Bill Donovan when he recruited religious activists into the first ranks of American espionage. Called upon to serve Uncle Sam, Donovan's recruits saw the war as a means of expanding their godly mission, believing an American victory would guarantee the safety of their fellow missionaries and their coreligionists abroad. Drawing on never-before-seen archival materials, acclaimed historian Matthew Sutton shows how religious activists proved to be true believers in Franklin Roosevelt's crusade for global freedom of religion. Sutton focuses on William Eddy, a warrior for Protestantism who was fluent in Arabic; Stewart Herman, a young Lutheran minister rounded up by the Nazis while pastoring in Berlin; Stephen B. L. Penrose, Jr., who left his directorship over missionary schools in the Middle East to join the military rank and file; and John Birch, a fundamentalist missionary in China. Donovan chose these men because they already had the requisite skills for good intelligence analysis, espionage, and covert operations, skills that allowed them to seamlessly blend into different environments. Working for eternal rewards rather than temporal spoils, they proved willing to sacrifice and even to die for their country during the conflict, becoming some of the United States' most loyal secret soldiers. Acutely aware of how their actions conflicted with their spiritual calling, these spies nevertheless ran covert operations in the centers of global religious power, including Mecca, the Vatican, and Palestine. In the end, they played an outsized role in leading the US to victory in WWII: Eddy laid the groundwork for the Allied invasion of North Africa, while Birch led guerilla attacks against the Japanese and, eventually, Chinese Communists. After the war, some of them -- those who survived -- helped launch the Central Intelligence Agency, so that their nation, and American Christianity, could maintain a strong presence throughout the rest of the world. Surprising and absorbing at every turn, Double Crossedis an untold story of World War II spycraft and a profound account of the compromises and doubts that war forces on those who wage it.

The world's fastest growing continent demographically, Africa displays nearly all the features of today's global security challenges: armed conflict, terrorism, irregular migration, organized crime, great power competition, public discontent, and economic turbulence. John Siko and Jonah Victor present their lessons from professional practice and pedagogical approach from the classroom in a concise guidebook that leads students and professionals through the most important issues, dynamics, challenges, and considerations for analysing and planning responses to security developments in Africa. This book provides issue-by-issue primers on the causes and consequences of Africa's security challenges that include: -how to anticipate security problems across current political and economic events -how to analyse African security institutions and military capabilities -how to understand historical trends across the African continent and appreciate unique variations among countries. -how to identify key drivers of future trends -how to connect security analysis to policy planning Learning is supported through the following features: - Thematic chapters which are optimized to help the reader quickly connect to the key concepts and analytic frameworks within the field. - The most relevant historical case studies, enabling students to engage in sophisticated analysis and discussion. - Connections and contrasts between the situations in North Africa and sub-Saharan Africa, which are traditionally studied separately. - Special sections on understanding race and ethnicity, and advice on traveling in Africa. - Chapter-end checklists of key questions to enable practical engagement with the topics covered.

When British troops first deployed to Northern Ireland in 1969 to keep apart rioting factions of loyalists and nationalists, they could not have known that they were being drawn into the longest campaign in the British Army's history, a battle against the threat of a new rising force - the Provisional Irish Republican Army.

While patrols, vehicle bombs and incendiary speeches are the defining memories of the Troubles, the real war was fought out of sight and out of mind. For thirty years, Britain's Special Forces waged a ferocious, secretive struggle against a ruthless and implacable enemy.

Harry McCallion's deep experience across the theatre of Northern Ireland offers a unique insight into nearly every major military action and operation in the Province. Having served seven tours with the Parachute Regiment, undergone selection for 14 Intelligence Company, completed six years with the SAS - including two tours with their anti-terrorism team - and received two commendations for bravery during service with the Royal Ulster Constabulary, there are few more qualified to tell this astonishing story.

This book is his blistering account of the history of Britain's war against the IRA between 1970 and 1998. From new insights into high-profile killings and riveting accounts of enemy contact, to revelations about clandestine missions and the strategies used in combating a merciless enemy, Undercover War is the definitive inside story of the battle against the IRA, one of the most dangerous and effective terrorist organisations in recent history.

Cover Name: Dr. Rantzau is a gripping diary-like personal account of espionage during the Second World War and is one of very few historic memoirs written by an ex- Abwehr officer. Detailed is how Colonel Nikolaus Ritter, following a brief World War I career and over ten years as a businessman in America, returned to Germany in spring of 1935 and became Chief of Air Intelligence in the Abwehr. He was assigned to establish a network of agents to gather information on British and US airfields, aircrafts, and state-of-the-art developments in the aerospace industry. Among others, Ritter's cover names were Dr. Rantzau and Dr. Reinhard in Holland, Belgium, and Luxembourg, Dr. Jansen in Hungary, Dr. Renken in Germany, and Mr. Johnson in America. Throughout his service in the Abwehr, Ritter smuggled America's most jealously guarded secret, the Norden bombsight and the Sperry gyroscope, into Germany, and coordinated the planning for the invasion of the British Isles (Operation Sea Lion). Ritter was incarcerated by the British in 1945 and sent to the Bad Nenndorf interrogation centre. Katharine Ritter Wallace, the daughter of Col. Ritter, presents the first English translation of the German World War II memoir. With a combination of collected documents, correspondences, personal notes, communications with peers, and from memory, this captivating account by an espionage agent reveals an insider's glimpse of the German intelligence service and of a handler's expansive and diverse agent network.

Many aspects of the Tet offensive of 1968 are brought to light here. The offensive is acknowledged as the turning point of the Vietnam War. Using Communist Vietnamese documents combined with Western sources, the author provides a more accurate version of the events, their significance, and reveals the crucial role played by US intelligence. This book illustrates that in the 1960s the Communist Vietnamese were well aware of the political and diplomatic nature of a People's War.

When the Germans invaded her small Belgian village in 1914, Marthe Cnockaert's home was burned and her family separated. After getting a job at a German hospital, and winning the Iron Cross for her service to the Reich, she was approached by a neighbor and invited to become an intelligence agent for the British. Not without trepidation, Cnockaert embarked on a career as a spy, providing information and engaging in sabotage before her capture and imprisonment in 1916. After the war, she was paid and decorated by a grateful British government for her service. Cnockaert's is only one of the surprising and gripping stories that comprise Female Intelligence. This is the first history of the female spies who served Britain during World War I, focusing on both the powerful cultural images of these women and the realities, challenges, and contradictions of intelligence service. Between the founding of modern British intelligence organizations in 1909 and the demobilization of 1919, more than 6,000 women served the British government in either civil or military occupations as members of the intelligence community. These women performed a variety of services, and they represented an astonishing diversity of nationality, age, and class. From Aphra Behn, who spied for the British government in the seventeenth century, to the most well known example, Mata Hari, female spies have a long history, existing in juxtaposition to the folkloric notion of women as chatty, gossipy, and indiscreet. Using personal accounts, letters, official documents and newspaper reports, Female Intelligence interrogates different, and apparently contradictory, constructions of gender in the competing spheres of espionage activity.

The world of intelligence has been completely transformed by the end of the Cold War and the onset of an age of information. Prior to the 1990s, US government intelligence had one principal target, the Soviet Union; a narrow set of 'customers', the political and military officials of the US government; and a limited set of information from the sources they owned, spy satellites and spies. Today, world intelligence has many targets, numerous consumers - not all of whom are American or in the government - and too much information, most of which is not owned by the U.S. government and is of widely varying reliability. In this bold and penetrating study, Gregory Treverton, former Vice Chair of the National Intelligence Council and Senate investigator, offers his insider's views on how intelligence gathering and analysis must change. He suggests why intelligence needs to be both contrarian, leaning against the conventional wisdom, and attentive to the longer term, leaning against the growing shorter time horizons of Washington policy makers. He urges that the solving of intelligence puzzles tap expertise outside government - in the academy, think tanks, and Wall Street - to make these parties colleagues and co-consumers of intelligence, befitting the changed role of government from doer to convener, mediator, and coalition-builder.

The magnificent, unrivaled history of codes and ciphers -- how they're made, how they're broken, and the many and fascinating roles they've played since the dawn of civilization in war, business, diplomacy, and espionage -- updated with a new chapter on computer cryptography and the Ultra secret.

Man has created codes to keep secrets and has broken codes to learn those secrets since the time of the Pharaohs. For 4,000 years, fierce battles have been waged between codemakers and codebreakers, and the story of these battles is civilization's secret history, the hidden account of how wars were won and lost, diplomatic intrigues foiled, business secrets stolen, governments ruined, computers hacked. From the XYZ Affair to the Dreyfus Affair, from the Gallic War to the Persian Gulf, from Druidic runes and the kaballah to outer space, from the Zimmermann telegram to Enigma to the Manhattan Project, codebreaking has shaped the course of human events to an extent beyond any easy reckoning. Once a government monopoly, cryptology today touches everybody. It secures the Internet, keeps e-mail private, maintains the integrity of cash machine transactions, and scrambles TV signals on unpaid-for channels. David Kahn's The Codebreakers takes the measure of what codes and codebreaking have meant in human history in a single comprehensive account, astonishing in its scope and enthralling in its execution. Hailed upon first publication as a book likely to become the definitive work of its kind, The Codebreakers has more than lived up to that prediction: it remains unsurpassed. With a brilliant new chapter that makes use of previously classified documents to bring the book thoroughly up to date, and to explore the myriad ways computer codes and their hackers are changing all of our lives, The Codebreakers is the skeleton key to a thousand thrilling true stories of intrigue, mystery, and adventure. It is a masterpiece of the historian's art.

This volume explores the contemporary challenges to US national cybersecurity. Taking stock of the field, it features contributions by leading experts working at the intersection between academia and government and offers a unique overview of some of the latest debates about national cybersecurity. These contributions showcase the diversity of approaches and issues shaping contemporary understandings of cybersecurity in the West, such as deterrence and governance, cyber intelligence and big data, international cooperation, and public-private collaboration. The volume's main contribution lies in its effort to settle the field around three main themes exploring the international politics, concepts, and organization of contemporary cybersecurity from a US perspective. Related to these themes, this volume pinpoints three pressing challenges US decision makers and their allies currently face as they attempt to govern cyberspace: maintaining international order, solving conceptual puzzles to harness the modern information environment, and coordinating the efforts of diverse partners. The volume will be of much interest to students of cybersecurity, defense studies, strategic studies, security studies, and IR in general.

The author examines in detail the organization of the U.S. intelligence community, its attempts to monitor and predict the development of Soviet forces from the early days of the cold war, and how these attempts affected American policy and weapons production. Originally published in 1987. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

World War II found the country of Albania fighting a war within a war. In addition to the threat all of Europe faced from the Germans, Albania was engaged in a civil war between the Nazi-sponsored Ballists and the Communist Partisans led by Enver Hoxha. While America was reluctant to get involved in the civil conflict, the United States was naturally inclined to lend support to whoever fought the Nazis - even if that meant an alliance with the Communists. On a cold November night in 1943, Dale McAdoo (code named Tank) secretly landed on the Albanian coast with a team of OSS (Office of Strategic Services) agents, including Ismail Carapizzi, an Albanian guide and interpreter who would later be murdered. McAdoo's team, the first of many to follow, set up a base of operations in a deep water level cave on the rocky Albanian coast that served the OSS as it carried out its mission of gathering intelligence to support the Allied war effort and harass the Germans. McAdoo was joined by Captain Tom Stefan (code name Art), an Albanian-speaking OSS officer from Boston, whose assignment was to join Hoxha at his remote mountain headquarters and bond with the reclusive Communist leader to benefit the OSS. This volume describes how the OSS aided the Communist-led Partisans in an attempt to weaken the Nazi cause in Albania and neighboring Italy. The book presents an in-depth look at the small core of hardened men who comprised these highly specialized teams, including each member's background and his special fitness for his wartime role behind enemy lines. The American and British presence in Albania during World War II and the later deterioration of Hoxha's relations with Captain Tom Stefan and the OSS mission are discussed in detail. Firsthand interviews with still-living participants and extensive onsite research make this book a unique resource for a little-known dramatic piece of World War II history.

‘One of our very best writers on France.’ Antony Beevor After publishing an acclaimed biography of Jean Moulin, leader of the French Resistance, Patrick Marnham received an anonymous letter from a person who claimed to have worked for British Intelligence during the war. The ex-spy praised his book but insisted that he had missed the real ‘treasure’. The letter drew Marnham back to the early 1960s when he had been taught French by a mercurial woman – a former Resistance leader, whose SOE network was broken on the same day that Moulin was captured and who endured eighteen months in Ravensbrück concentration camp. Could these two events have been connected? His anonymous correspondent offered a tantalising set of clues that seemed to implicate Churchill and British Intelligence in the catastrophe. Drawing on a deep knowledge of France and original research in British and French archives, War in the Shadows exposes the ruthless double-dealing of the Allied intelligence services and the Gestapo through one of the darkest periods of the Second World War. It is a story worthy of Le Carré, but with this difference – it is not fiction. ‘A melange of Le Grand Meaulnes and The Spy Who Came in from the Cold. It is unforgettable.’ Ferdinand Mount, TLS, Books of the Year ‘A masterly analysis, impeccably presented.’ Allan Mallinson, Spectator ‘Fascinating… Marnham has a vast and scholarly knowledge of this often treacherous world.’ Caroline Moorehead, Literary Review

The official book behind the Academy Award-winning film The Imitation Game, starring Benedict Cumberbatch and Keira Knightley Alan Turing was the mathematician whose cipher-cracking transformed the Second World War. Taken on by British Intelligence in 1938, as a shy young Cambridge don, he combined brilliant logic with a flair for engineering. In 1940 his machines were breaking the Enigma-enciphered messages of Nazi Germany's air force. He then headed the penetration of the super-secure U-boat communications. But his vision went far beyond this achievement. Before the war he had invented the concept of the universal machine, and in 1945 he turned this into the first design for a digital computer. Turing's far-sighted plans for the digital era forged ahead into a vision for Artificial Intelligence. However, in 1952 his homosexuality rendered him a criminal and he was subjected to humiliating treatment. In 1954, aged 41, Alan Turing took his own life.

In September 2017, North Korea shocked the world by exploding the most powerful nuclear device tested anywhere in 25 years. Months earlier, it had conducted the first test flight of a missile capable of ranging much of the United States. By the end of that year, Kim Jong Un, the reclusive state's ruler, declared that his nuclear deterrent was complete. Today, North Korea's nuclear weapons stockpile and ballistic missile arsenal continues to grow, presenting one of the most serious challenges to international security to date. Internal regime propaganda has called North Korea's nuclear forces the country's "treasured sword," underscoring the cherished place of these weapons in national strategy. Fiercely committed to self-reliance, Kim remains determined to avoid unilateral disarmament. Kim Jong Un and the Bomb tells the story of how North Korea-once derided in the 1970s as a "fourth-rate pipsqueak" of a country by President Richard Nixon-came to credibly threaten the American homeland by November 2017. Ankit Panda explores the contours of North Korea's nuclear capabilities, the developmental history of its weapons programs, and the prospects for disarming or constraining Kim's arsenal. With no signs that North Korea's total disarmament is imminent over the next years or even decade, Panda explores the consequences of a nuclear-armed North Korea for the United States, South Korea, and the world.

The breaking of the Enigma machine is one of the most heroic stories of the Second World War. But there was another German cipher machine, used by Hitler himself to convey messages to his top generals in the field. A machine more complex and secure than Enigma. A machine that could never be broken. For sixty years, no one knew about about Lorenz or 'Tunny', or the determined group of men who finally broke the code and thus changed the course of the war. Many of them went to their deaths without anyone knowing of their achievements. Here, for the first time, codebreaker. Captain Jerry Roberts tells the complete story of this extraordinary feat of intellect and of his struggle to get his wartime colleagues the recognition they deserve. The work they carried out at Bletchley Park was groundbreaking and is recognised as having kick-started the modern computer age.

The story of one of the most astonishing episodes of espionage and deception of World War Two.This is the tale of two men: Claude Dansey, deputy head of MI6, and double agent Henri Dericourt, who was planted with the rival wartime secret service - SOE - at Dansey's instructions. From there began a terrifying trail of destruction. After making contact with Dansey in 1942, Dericourt was recruited to SOE as the man desperately needed to organize top-secret flights in and out of occupied French territory. But at the same time Dericourt was in touch with German counter-espionage in Paris. As SOE congratulated themselves on a new asset, Dericourt gave the Nazis everything; every flight, operation and coded message he could. Against a background of unprecedented deception and betrayal, Dansey's secret MI6 operation eventually led to the arrest of nearly one thousand men and women, hundreds of whom died in concentration camps. How did it go so wrong? A shocking, enthralling account of a devastating episode in the history of the British secret services, perfect for readers of Ben MacIntyre.

This volume discusses the challenges the future holds for different aspects of the intelligence process and for organisations working in the field. The main focus of Western intelligence services is no longer on the intentions and capabilities of the Soviet Union and its allies. Instead, at present, there is a plethora of threats and problems that deserve attention. Some of these problems are short-term and potentially acute, such as terrorism. Others, such as the exhaustion of natural resources, are longer-term and by nature often more difficult to foresee in their implications. This book analyses the different activities that make up the intelligence process, or the 'intelligence cycle', with a focus on changes brought about by external developments in the international arena, such as technology and security threats. Drawing together a range of key thinkers in the field, The Future of Intelligence examines possible scenarios for future developments, including estimations about their plausibility, and the possible consequences for the functioning of intelligence and security services. This book will be of much interest to students of intelligence studies, strategic studies, foreign policy, security studies and IR in general.

This book critically analyses the concept of the intelligence cycle, highlighting the nature and extent of its limitations and proposing alternative ways of conceptualising the intelligence process. The concept of the intelligence cycle has been central to the study of intelligence. As Intelligence Studies has established itself as a distinctive branch of Political Science, it has generated its own foundational literature, within which the intelligence cycle has constituted a vital thread - one running through all social-science approaches to the study of intelligence and constituting a staple of professional training courses. However, there is a growing acceptance that the concept neither accurately reflects the intelligence process nor accommodates important elements of it, such as covert action, counter-intelligence and oversight. Bringing together key authors in the field, the book considers these questions across a number of contexts: in relation to intelligence as a general concept, military intelligence, corporate/private sector intelligence and policing and criminal intelligence. A number of the contributions also go beyond discussion of the limitations of the cycle concept to propose alternative conceptualisations of the intelligence process. What emerges is a plurality of approaches that seek to advance the debate and, as a consequence, Intelligence Studies itself. This book will be of great interest to students of intelligence studies, strategic studies, criminology and policing, security studies and IR in general, as well as to practitioners in the field.

Home-grown terrorists equipped by a foreign power are not a new phenomenon. During the Second World War, Hitler's Germany made sustained efforts to inflict a terror campaign on the streets of Britain through the use of secret agents and agents provocateurs. The aim was to blow up military, industrial, transport and telecommunication targets, to lower morale among the civilian population and disrupt the war effort. Even before the outbreak of war, the Nazis provided the IRA with assistance for their plan to sabotage the British mainland. Prior to their planned invasion in the summer of 1940, the Nazis were also keen to recruit members of the Welsh and Scottish Nationalist Parties to engage in sabotaging British targets and, over the course of the war, infiltrated dozens of trained agents from countries including Norway, Denmark, Holland, France and Cuba. What happened to the myriad plots to blow up Britain? We know that intelligence obtained from decrypted enemy messages via Bletchley Park and double agents like ZIGZAG, SUMMER and TATE alerted MI5 to some of these spies' arrivals, but what about the others? And how successful were MI5's efforts to fake acts of sabotage and arrange media coverage to fool the enemy into thinking their agents were still at large and on task? In this book, Bernard O'Connor, a noted wartime espionage historian, tells the complete story of the successes and failures of the Nazi terror offensive on mainland Britain during 1938-1944.

Since the 9/11 terrorist attacks in the United States, serious concerns were raised on domestic and international security issues. Consequently, there has been considerable interest recently in technological strategies and resources to counter acts of terrorism. In this context, this book provides a state-of-the-art survey of the most recent advances in the field of counterterrorism and open source intelligence, demonstrating how various existing as well as novel tools and techniques can be applied in combating covert terrorist networks. A particular focus will be on future challenges of open source intelligence and perspectives on how to effectively operate in order to prevent terrorist activities.

This book critically analyses the concept of the intelligence cycle, highlighting the nature and extent of its limitations and proposing alternative ways of conceptualising the intelligence process. The concept of the intelligence cycle has been central to the study of intelligence. As Intelligence Studies has established itself as a distinctive branch of Political Science, it has generated its own foundational literature, within which the intelligence cycle has constituted a vital thread - one running through all social-science approaches to the study of intelligence and constituting a staple of professional training courses. However, there is a growing acceptance that the concept neither accurately reflects the intelligence process nor accommodates important elements of it, such as covert action, counter-intelligence and oversight. Bringing together key authors in the field, the book considers these questions across a number of contexts: in relation to intelligence as a general concept, military intelligence, corporate/private sector intelligence and policing and criminal intelligence. A number of the contributions also go beyond discussion of the limitations of the cycle concept to propose alternative conceptualisations of the intelligence process. What emerges is a plurality of approaches that seek to advance the debate and, as a consequence, Intelligence Studies itself. This book will be of great interest to students of intelligence studies, strategic studies, criminology and policing, security studies and IR in general, as well as to practitioners in the field.

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 organisation 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 which 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 - MI.1 - 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. Denniston was moved in 1942 from military to civilian intelligence at Berkeley Street, London. Small at first, as Enigma traffic diminished towards the end of the Second World War, diplomatic and commercial codebreaking became of increasing importance and a vital part of Britain's signal intelligence effort. GC&CS was renamed the Government Communications Headquarters (GCHQ) in June 1946, and moved to the outskirts of Cheltenham. It continues to be the UK's signal intelligence gathering organisation. With the support and assistance of the 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 organisation that was his legacy. [Denniston was a] great man in whose debt all English-speaking people will remain for a very long time, if not for ever. That so few of them should know exactly what he did towards achievement of victory in World War I and II is the sad part of the untold story of his life and of his great contribution to that victory.' -William Friedman, The doyen of American cryptography One of the reasons for the success of Bletchley Park, and something that I and Alastair Denniston's other successors have striven to maintain in GCHQ, is the organisation's ability to make space to allow individuals to flourish, both in isolation, and within teams. He had already worked out that the forthcoming war and the profusion of mechanical encryption devices needed a new sort of cryptanalyst to complement the existing staff.' -Sir Ian Lobban, Director of GCHQ 2008 to 2014

Of German stock dating back to 1530 in Saxony, Eric George Ackermann GM was born on the Isle of Wight in 1919 and became a leading figure in the world of signals and electronic intelligence. As a Junior Scientific Officer at the Telecommunication Research Establishment, Boscombe Down, with an honorary commission in the Royal Air Force, he made numerous flights over occupied territory searching for, monitoring and destroying Germany's Wuerzburg, Knickebein and X Band radar systems. Much of his research was passed to the highest levels of wartime government, and was highly prized, ensuring that tactical plans could be executed that took full advantage of known, top secret German intelligence. A host of secret missions to assess the enemy's radar capabilities were carried out in North Africa, Gibraltar and Italy. This new and engaging biography explores the various highs and lows of his operational deployment at the vanguard of tactical intelligence operations in these exciting theaters of war. Winner of the George Medal for conspicuous gallantry, his efforts weren't confined to the offices of war. He saw conflict up close and personal, and was therefore aware of the urgency of his endeavours, and the extent to which his findings made a difference. The end of the war was a cause of great celebration, but it did not signal the end of Ackermann's role, far from it. He was to play a major part in the setting up and implementation of a string of listening stations built along the borders of Soviet Bloc countries which were destined to glean a wealth of invaluable post-war intelligence. Further work in aeronautics and satellite construction in the States followed, meaning the reach of Ackermann's influence could be allowed to stretch yet further. Yet despite the might and scale of his achievement, he has never before been the subject of a book-length study. The authors, Peter Jackson and David Haysom, have made every effort to rectify that in this new publication which is sure to appeal to aviation enthusiasts, as well as the more general reader curious to gain new insights into twentieth century intelligence practices and their often far-reaching consequences.