Although China s intelligence activities may not have been well documented, they can be traced back to the ancient writings of Sun Tzu, and espionage has been a characteristic of Chinese domestic politics and international relations ever since. The People s Republic of China has long engaged in espionage, but relatively little is known about Chinese techniques, methodology, personnel, and organizations in comparison with what the West has learned about other more conventional intelligence agencies that conduct operations across the world. Whereas most intelligence services have suffered damaging defections, the number of Ministry of State Security professionals who have switched sides is relatively small, further limiting outside knowledge. The Historical Dictionary of Chinese Intelligence covers the history of Chinese Intelligence from 400 B.C. to modern times. This is done through a chronology, an introductory essay, an extensive bibliography, and an index. The dictionary section has over 400 cross-referenced entries on the agencies and agents, the operations and equipment, the tradecraft and jargon, and many of the countries involved. This book is an excellent access point for students, researchers, and anyone wanting to know more about Chinese Intelligence."

Twelve novels and nine short stories define one of the most extraordinary fictional characters of all time, creating the basis for the most successful movie series in cinematographic history, watched by more than half the world's population. The single person probably more responsible than any other for glamorizing the murky world of espionage is Ian Fleming, the creator of James Bond, who himself lived a remarkable double life of spy and writer. Everyone has an opinion on why 007 became so successful, but one possible explanation is the ingenious formula of fact, fiction, and sheer fantasy. Certainly the author drew on friends and places he knew well to provide the backdrop for his drama, but what proportion of his output is authentic, and what comes directly from the author's imagination? These questions and more are examined in the Historical Dictionary of Ian Fleming's World of Intelligence: Fact and Fiction. This is done through a chronology, an introduction, a bibliography, and hundreds of cross-referenced dictionary entries on actual cases of espionage, real-life spies, MI5, SIS, CIA, KGB, and others. It also contains entries on Ian Fleming's novels and short stories, family and friends, his employers and colleagues, and other notable characters.

Signals Intelligence (SIGINT) encompasses the various disciplines of wireless interception, cryptanalysis, communications intelligence, electronic intelligence, direction-finding, and traffic analysis. It has become the basis upon which all combat operations are undertaken. It is now widely recognized as an absolutely vital dimension to modern warfare and it has proved to be a vital component in the counter-intelligence war fought between the West and Soviet bloc intelligence agencies. The Historical Dictionary of Signals Intelligence covers the history of SIGINT through a chronology, an introductory essay, an appendix, and an extensive bibliography. The dictionary section has over 300 cross-referenced entries on key personnel, SIGINT technology, intelligence operations, and agencies, as well as the tradecraft and jargon. This book is an excellent access point for students, researchers, and anyone wanting to know more about Signals Intelligence.

British Intelligence is the oldest, most experienced organization of its kind in the world, the unseen hand behind so many world events, and glamorized by James Bond. Despite the change in role, from a global power controlling an Empire that covered much of the world, to a mere partner in the North Atlantic Treaty Organization (NATO) and the European Union, the country's famed security and intelligence apparatus continues largely intact, and recognized as "punching above its weight." Feared by the Soviets, admired and trusted by the Central Intelligence Agency (CIA), British Intelligence has provided the hidden dimension to the conduct of domestic and foreign policy, with the added mystique of Whitehall secrecy, a shroud that for years protected the identities of the shadowy figures who recruited the sources, broke the codes, and caught the spies. This second edition of Historical Dictionary of the British Intelligence covers the history through a chronology, an introductory essay, appendixes, and an extensive bibliography. The dictionary section has over 1,000 cross-referenced entries on specific operations, spies and their handlers, the moles and defectors, top leaders, and main organizations. This book is an excellent access point for students, researchers, and anyone wanting to know more about the British Intelligence.

The defection of Igor Gouzenko in September 1945, more so than any other single event, alerted the West to the nature and scale of the Soviet espionage offensive being waged by the Kremlin. Apart from the dozen or so defendants convicted of spying, Gouzenko wrecked an organization that had taken years to develop, exposed the penetration of the Manhattan atomic weapons project, and demonstrated the very close relationship between the Canadian Communist Party and Moscow. Many credit this event as sparking the bitter but secretive struggle fought between the intelligence agencies of the East and West for nearly half a century. The Historical Dictionary of Cold War Counterintelligence tells the story of both sides' fierce efforts to penetrate and subvert the opponent while desperately trying to avoid a similar fate. Through a chronology, an introduction, appendixes, a bibliography, and hundreds of cross-referenced dictionary entries on the organizations, operations, events, and personalities that influenced counterintelligence during the Cold War, the world of double agents, spies, and moles is explained in the most comprehensive reference currently available.

Naval intelligence is one of the most vital, and sometimes decisive, forms of intelligence. Over the centuries, and with particular velocity over recent decades, the techniques of detecting and destroying military (and commercial) shipping have improved, leapfrogging the equally frantic race to keep ahead of them and safeguard the huge investments involved. Today the new challenges range from an increasingly aggressive strategy adopted by Pyongyang's submarine fleet and the exclusion of illegal immigrants heading for Australia and southern Europe to the capture of cocaine-laded submarines in the Caribbean and the interdiction of Somali pirates off the Gulf of Aden. Any accurate assessment of the comparative threat these activities pose is just as dependent on good intelligence today as it was to Admiral Lord Nelson in the days of sail. The Historical Dictionary of Naval Intelligence relates the long and fascinating history of naval intelligence through a chronology, an introduction, a bibliography, and hundreds of cross-referenced dictionary entries on the organizations, operations, and events that made Naval intelligence what it is today.

Intelligence is now acknowledged as the hidden dimension to international diplomacy and national security. It is the hidden piece of the jigsaw puzzle of global relations that cements relationships, undermines alliances and topples tyrants, and after many decades of being deliberately overlooked or avoided, it is now regarded as a subject of legitimate study by academics and historians. This second edition of Historical Dictionary of International Intelligence covers its history through a chronology, an introductory essay, and an extensive bibliography. The dictionary section has over 500 cross-referenced entries on espionage techniques, categories of agents, crucial operations spies, defectors, moles, double and triple agents, and the tradecraft they apply. This book is an excellent access point for students, researchers, and anyone wanting to know more about the international intelligence.

The Cold War was a sophisticated conflict fought by the west, principally the United States, Great Britain, Canada, Australia and New Zealand, with support from NATO, CENTO and SEATO, to confront the Kremlin and its Warsaw Pact satellites. The battlegrounds extended from Latvia, Lithuania, Estonia, Byelorussia and Albania to Czechoslovakia, Poland and Hungary, and resulted in conventional, proxy wars fought in Vietnam, Egypt and Korea. Only now, thirty years after the fall of the Berlin Wall, can these issues be examined through the prism of the secret files generated by the intelligence agencies on both sides which have been declassified. This Historical Dictionary of Cold War Intelligence contains a chronology, an introduction, and an extensive bibliography. The dictionary section has hundreds of cross-referenced dictionary entries on crucial operations spies, defectors, moles, double and triple agents, and the tradecraft they apply. This book is an excellent resource for students, researchers, and anyone wanting to know more about intelligence during the Cold War.

MI5's dramatic interception of secret signals to Moscow from a hidden base in Wimbledon uncovered the true extent of Soviet espionage in Britain. Intelligence expert Nigel West reveals how MASK, the codename for one of the most secretive sources ever run by British intelligence, enabled Stanley Baldwin and his cabinet to monitor the activities of the Communist Party of Great Britain and track wireless traffic between the Soviet Union and its Comintern representatives abroad, in countries as far apart as the United States, China and Austria. The Government Code and Cipher School was one of the most secret branches of Whitehall, under the command of the Secret Intelligence Service, and used its covert intercept station in Denmark Hill, South London to make vital advances in the intelligence war. This gripping account exposes for the first time how the Communist Party of Great Britain was infiltrated and the actual contents of its communications with the Soviets.

Black Ops is a thrilling compendium of undercover warfare from around the world. Here you will meet the most hardened soldiers and operatives facing extraordinary dangers deep behind enemy lines. The book features many amazing stories from World War II, such as the assassination of Holocaust architect Reinhard Heydrich by Britain's Special Operations Executive, which in 1940 received its mission from Churchill to 'set Europe ablaze' in the battle against Nazi tyranny. Also told are the stories of Stalin's favourite spy; the little-known account of how Japanese military codes were cracked; and Operation Mincemeat, which led to the invasion of Sicily. Written by a leading military intelligence expert, Black Ops ranges across a century of remarkable clandestine operations. Starting with Hans Carl Lody, the first German spy during World War I, we also have the plot to assassinate Lenin; the origins of strategic deception; and the Cold War defection of Oleg Gordievsky from the Soviet Union. The book is brought right up to date with the plot to assassinate Osama bin Laden by Navy SEALS in 2011, and the attempted assassination of the Skripals in the UK in 2018, leading to fears that the world is on the brink of a new Cold War. A compelling anthology of spies, soldiers, mercenaries and assassins, Black Ops tells the secret history of 20th- and 21st-century warfare.

WALLFLOWERS is the codename given to one of the Security Service s most treasured possessions, the daily journal dictated from August 1939 to June 1945 by MI5 s Director of Counter-Espionage, Guy Liddell, to his secretary, Margo Huggins. The document was considered so highly classified that it was retained in the safe of successive Directors-General, and special permission was required to read it.

Liddell was one of three brothers who all won the Military Cross during the First World War and subsequently joined MI5. He initially first served in the Metropolitan Police Special Branch at Scotland Yard, dealing primarily with cases of Soviet espionage, until he was transferred to MI5 in 1931. His social connections proved important because in 1940 he employed Anthony Blunt as his personal assistant and became a close friend of both Guy Burgess and Victor Rothschild, and was acquainted with Kim Philby. Despite these links, when Liddell retired from the Security Service in 1952 he was appointed security adviser to the Atomic Energy Commission, an extremely sensitive post following the conviction of the physicist Klaus Fuchs two years earlier.

No other member of the Security Service is known to have maintained a diary and the twelve volumes of this journal represents a unique record of the events and personalities of the period, a veritable tour d horizon of the entire subject. As Director, B Division, Liddell supervised all the major pre-war and wartime espionage investigations, maintained a watch on suspected pro-Nazis and laid the foundations of the famous double cross system of enemy double agents. He was unquestionably one of the most reclusive and remarkable men of his generation, and a legend within his own organisation.

This is the first volume of Nigel West's acclaimed presentation of these fascinating diaries from the heart of Britain's Second World War intelligence operations.

'No intelligence buff can be without this volume and anyone interested in British twentieth century history needs it too.'

M.R.D. Foot, The Spectator

'Regarded by historians as the most important military intelligence documents from the whole of the Second World War.'

Irish Independent

' A] unique insight into the espionage secrets of the Second World War. Its historical importance is enhanced by the editing of Nigel West who, apart from decoding several obscure references to the secret war, persuaded the Security Service to break their rule of maintaining an agent's anonymity.'

BBC History Magazine

WALLFLOWERS is the codename given to one of the Security Service's most treasured possessions, the daily journal dictated from August 1939 to June 1945 by MI5's Director of Counter Espionage, Guy Liddell, to his secretary, Margo Huggins. The document was considered so highly classified that it was retained in the safe of successive Directors General, and special permission was required to read it.
No other member of the Security Service is known to have maintained a diary and the twelve volumes of this journal represent a unique record of the events and personalities of the period, a veritable tour d'horizon of the entire subject. As Director, B Division, Liddell supervised all the major pre-war and wartime espionage investigations, maintained a watch on suspected pro-Nazis and laid the foundations of the famous 'double cross system' of enemy double agents. He was unquestionably one of the most reclusive and remarkable men of his generation, and a legend within his own organization.

Historical Dictionary of Chinese Intelligence, Second Edition covers the history of Chinese Intelligence from 400 B.C. to modern times. The dictionary section has over 400 cross-referenced entries on the agencies and agents, the operations and equipment, the tradecraft and jargon, and many of the countries involved.

WALLFLOWERS is the codename given to one of the Security Service's most treasured possessions, the daily journal dictated from August 1939 to June 1945 by MI5's Director of Counter-Espionage, Guy Liddell, to his secretary, Margo Huggins. The document was considered so highly classified that it was retained in the safe of successive Directors-General, and special permission was required to read it.
Liddell was one of three brothers who all won the Military Cross during the First World War and subsequently joined MI5. He initially first served in the Metropolitan Police Special Branch at Scotland Yard, dealing primarily with cases of Soviet espionage, until he was transferred to MI5 in 1931. His social connections proved important because in 1940 he employed Anthony Blunt as his personal assistant and became a close friend of both Guy Burgess and Victor Rothschild, and was acquainted with Kim Philby. Despite these links, when Liddell retired from the Security Service in 1952 he was appointed security adviser to the Atomic Energy Commission, an extremely sensitive post following the conviction of the physicist Klaus Fuchs two years earlier.
No other member of the Security Service is known to have maintained a diary and the twelve volumes of this journal represents a unique record of the events and personalities of the period, a veritable tour d'horizon of the entire subject. As Director, B Division, Liddell supervised all the major pre-war and wartime espionage investigations, maintained a watch on suspected pro-Nazis and laid the foundations of the famous 'double cross system' of enemy double agents. He was unquestionably one of the most reclusive and remarkable men of hisgeneration, and a legend within his own organization.

MASK is the codename for one of the most sensitive, long-term sources ever run by any British intelligence organisation. It concealed the existence of a radio interception programme operated by the Government Code and Cipher School (GC&CS) which succeeded in monitoring, and reading, large quantities of encrypted wireless traffic exchanged between the headquarters of the Comintern in Moscow, and numerous Comintern representatives abroad, in countries as far apart as China, Austria and the United States. The content of these secret messages was of immense use to the very limited group of people who had access to it. Of greatest interest to MI5 and Stanley Baldwin's Cabinet was the material passing to and from the Communist Party of Great Britain (CPGB), which was monitored from a covert intercept station located on Denmark Hill, south London. Its principal target was the daily wireless traffic of a clandestine transmitter based in Wimbledon and operated by a member of the CPGB's underground cell, controlled by a Scot, Bob Stewart. the Secret Intelligence Service (SIS), and for years had supplied the Prime Minister and a handful of Cabinet ministers with summaries of decrypted foreign communications.

WALLFLOWERS is the codename given to one of the Security Service's most treasured possessions, the daily journal dictated from August 1939 to June 1945 by MI5's Director of Counter Espionage, Guy Liddell, to his secretary, Margo Huggins. The document was considered so highly classified that it was retained in the safe of successive Directors-General, and special permission was required to read it.
Liddell was one of three brothers who all won the Military Cross during the First World War and subsequently joined MI5. He initially first served in the Metropolitan Police Special Branch at Scotland Yard, dealing primarily with cases of Soviet espionage, until he was transferred to MI5 in 1931. His social connections proved important because in 1940 he employed Anthony Blunt as his personal assistant and became a close friend of both Guy Burgess and Victor Rothschild, and was acquainted with Kim Philby. Despite these links, when Liddell retired from the Security Service in 1952 he was appointed security adviser to the Atomic Energy Commission, an extremely sensitive post following the conviction of the physicist Klaus Fuchs two years earlier.
No other member of the Security Service is known to have maintained a diary and the twelve volumes of this journal represent a unique record of the events and personalities of the period, a veritable tour d'horizon of the entire subject. As Director, B Division, Liddell supervised all the major pre-war and wartime espionage investigations, maintained a watch on suspected pro-Nazis and laid the foundations of the famous "double cross system" of enemy double agents. He was unquestionably one of the most reclusive and remarkable men of hisgeneration, and a legend within his own organization.

Modern historians have consistently condemned the Abwehr, Germany's military intelligence service, and its SS equivalent, the Sicherheitsdienst (SD), as incompetent and even corrupt organizations. However, newly declassified MI5, CIA and US Counterintelligence Corps files shed a very different light on the structure, control and capabilities of the German intelligence machine in Europe, South America, the Mediterranean and the Middle East. It is usually stated that, under Admiral Canaris, the Abwehr neglected its main functions, its attention being focused more on trying to bring down Hitler. Yet Canaris greatly expanded the Abwehr from 150 personnel into a vast world-wide organisation which achieved many notable successes against the Allies. Equally, the SD's tentacles spread across the Occupied territories as the German forces invaded country after country across Europe. In this in-depth study of the Abwehr's rise to power, 1935 to 1943, its activities in Russia, the Baltic States, Ukraine, Japan, China, Manchuko and Mongolia are examined, as well as those in Thailand, French Indo-China, the Dutch East Indies, the Philippines, Iran, Turkey, Afghanistan, and the Arab nations. In this period, the Abwehr built a complex network of individual agents with transmitters operating from commercial, diplomatic and consular premises. Before, and in the early stages of the war, it later became apparent, the Abwehr was controlling a number of agents in Britain. Indeed, it was only after the war that the scale of the Abwehr's activities became known, the organisation having of around 20,000 members. For the first time, the Abwehr's development and the true extent of its operations have been laid bare, through official files and even of restored documents previously redacted. The long list of operations and activities of the Abwehr around the world includes the efforts of an agent in the USA who was arrested after a bizarre attempt to obtain a quantity of blank American passports by impersonating a senior State Department official, Edward Weston, an Under-Secretary of State. Also, former U.S. Marine, Kurt Jahnke, who was recruited to collect information about the American munitions production and send it on to Germany. These are just two of the numerous and absorbing accounts in this all-embracing study.

As the Second World War progressed and defeat for Hitler's Third Reich in all theatres became ever more certain, the tight Abwehr network, built so effectively by its head, Admiral Canaris, began to unravel. High-level defections to the Allies and bitter disputes with the Sicherheitsdienst (SD) added to a collapse in morale. Most notably was the increasing opposition within the officer ranks of the Army to Hitler fermented by Canaris and his deputy Generalmajor Hans Oster. The final years of the Abwehr were marked by the Abwehr's efforts to undermine the regime, which came to a bloody conclusion following the Valkyrie assassination attempt of 20 July 1944. This saw the arrest of many Abwehr officials and the execution of Canaris and Oster. In this penetrating study of the final years of the Abwehr, Nigel West, a world-renowned specialist in the field, pieces together the gradual decline in the organisation's role and importance with Hitler and his acolytes paying little heed to reports that were increasingly cautionary. Among the many previously undisclosed stories are details gleaned from recently opened files which tell of a hitherto unknown spy-swap. This was the exchange of Berthold Shulze-Holthus, a German spy detained in Iran, for Ferdinand Rodriguez, a British radio operator captured in France. This was the only such exchange that took place during the whole of the Second World War - though the fact that the swap took place at all suggests that a previously unsuspected degree of communication existed between the Allies and Nazi Germany. Perhaps most tantalizingly of all, is the new night light thrown upon the role the British Secret Intelligence Service, MI6, had, in league with the Abwehr, in the Valkyrie bombing which almost killed Hitler.

The Second World War saw the role of espionage, secret agents and spy services increase exponentially as the world was thrown into a conflict quite unlike any that had gone before it. At this time, no one in government was really aware of what MI5 and its brethren did. But with Churchill at the country’s helm, it was decided to let him in on the secret, providing him with a weekly report of the spy activities – so classified that he was handed each report personally and copies were never allowed to be made, nor was he allowed to keep hold of them. Even now, the documents only exist as physical copies deep in the archives, many pages annotated by hand by ‘W.S.C.’ himself. In Churchill's Spy Files acclaimed intelligence expert Nigel West unravels the tales of hitherto unknown spy missions, using this ground-breaking research to paint a fresh picture of the worldwide intelligence scene of the Second World War.

Spies have made an extraordinary impact on the history of the 20th Century, but fourteen in particular can be said to have been demonstrably important. As one might expect, few are household names, and it is only with the benefit of recently declassified files that we can now fully appreciate the nature of their contribution. The criteria for selection have been the degree to which each can now be seen to have had a very definite influence on a specific course of events, either directly, by passing vital classified material, or indirectly, by organizing or managing a group of spies. Those selected were active in the First World War, the inter-war period, the Second World War, the Cold War and even the post-Cold War era. These include Walther Dew who formed a spy ring in German-occupied Belgium during the First World War. This train-watching network, known as White Lady', reported on German troop deployments and possible weaknesses in the German defences. Extending its operations into northern France, the ring provided 75 per cent of the information received by GHQ, British Expeditionary Force. By the time of the Armistice in 1918, Dew 's group had a staggering 1,300 members. Olga Gray, the 27-year-old daughter of a Daily Mail journalist, was employed as a secretary by the Communist Party of Great Britain. In 1931 she undertook a mission for MI5 to penetrate the organization and discover its secret channel of communication with Moscow. Gray learned that the Party's cipher was based on Treasure Island and this breakthrough enabled the Party's messages to be read by Whitehall cryptographers. Renato Levi, an Italian playboy, was the longest-serving British agent of the Second World War and is credited with creating the concept of strategic deception. While operating in Cairo as a double agent working for the Abwehr and the British he was instrumental in misleading the Axis about Allied strength across the Middle East and helped Montgomery achieve his victory over Rommel's Afrika Korps at El Alamein. So successful was Levi in this and other deceptions, he was employed to persuade the Germans that the D-Day landings in Normandy were a diversionary feint, in anticipation of an invasion in the Pas-de-Calais. These, and other surprising stories, are revealed in this fascinating insight into a secret world inhabited by mysterious and shadowy characters, all of whom, though larger than life, really did exist.

With the recent declassification of secret documents new light has been shed on old mysteries. For example, we now know that what might be termed the "JFK assassination conspiracy industry" was deliberately fueled and manipulated by the KGB so as to distract the CIA and undermine confidence in successive U.S. administrations. Also, new evidence continues to emerge of Vladimir Putin's commitment to the extra-judicial elimination of "extremists" overseas, as legitimized by the Duma in July 2006. Controversially, the legislation included a definition of "extremists" as "those slandering the individual occupying the post of president of the Russian Federation". The Encyclopedia of Political Assassinations contains a chronology, an introduction, and appendixes. The encyclopedia section has more than 700 cross-referenced entries on assassinations, intelligence agencies, politics and foreign relations.

Known as "the Great War," the world's first truly global conflict is remarkable in what might now be termed modern espionage. World War I was witness to plenty of "firsts." Apart from the contribution made by aerial reconnaissance and the interception of wireless telegraphy, telephone and cable traffic, there was the scientific aspect, with new machines of war, such as the submarine, sea-mine, torpedo, airship, barbed wire, armored tank and mechanized cavalry in a military environment that included mustard gas, static trench warfare, the indiscriminate bombardment of civilian population centers and air-raids. Large-scale sabotage and propaganda, the manipulation of news and of radio broadcasts, and censorship, were all features of a new method of engaging in combat, and some ingenious techniques were developed to exploit the movement of motor and rail transport, and the transmission of wireless signals. The hitherto unknown disciplines of train-watching, bridge-watching, airborne reconnaissance and radio interception would become established as routine collection methods, and their impact on the conflict would prove to be profound. The Historical Dictionary of World War I Intelligence relates this history through a chronology, an introductory essay, an appendix, and an extensive bibliography. The dictionary section has over 400 hundred cross-referenced entries on intelligence organizations, the spies, and the major cases and events of World War I. This book is an excellent access point for students, researchers, and anyone wanting to know more about the world of intelligence in World War I.

The Cold War, with its air of mutual fear and distrust and the shadowy world of spies and secret agents, gave publishers the chance to produce countless stories of espionage, treachery and deception. What Nigel West has discovered is that the most egregious deceptions were in fact the stories themselves. In this remarkable investigation into the claims of many who portrayed themselves as key players in clandestine operations, the author has exposed a catalogue of misrepresentations and falsehoods. Did Greville Wynne really exfiltrate a GRU defector from Odessa? Was the frogman Buster Crabb abducted during a mission in Portsmouth Harbour? Did the KGB run a close-guarded training facility, as described by J. Bernard Hutton in School for Spies, which was modelled on a typical town in the American mid-west, so agents could be acclimatised to a non-Soviet environment? With the help of witnesses with first-hand experience, and recently declassified documents, Nigel West answers these and other fascinating questions from a time when secrecy and suspicion allowed the truth to be concealed.

Signal intelligence is the most secret, and most misunderstood, weapon in the modern espionage arsenal. As a reliable source of information, it is unequalled, which is why Government Communications Headquarters, almost universally known as GCHQ, is several times larger than the two smaller, but more familiar, organisations, MI5 and MI6. Because of its extreme sensitivity, and the ease with which its methods can be compromised, GCHQ's activities remain cloaked in secrecy. In GCHQ: The Secret Wireless War, the renowned expert Nigel West traces GCHQ's origins back to the early days of wireless and gives a detailed account of its development since that time. From the moment that Marconi succeeded in transmitting a radio signal across the Channel, Britain has been engaged in a secret wireless war, first against the Kaiser, then Hitler and the Soviet Union. Following painstaking research, Nigel West is able to describe all GCHQ's disciplines, including direction-finding, interception and traffic analysis, and code-breaking. Also explained is the work of several lesser known units such as the wartime Special Wireless Groups and the top-secret Radio Security Service. Laced with some truly remarkable anecdotes, this edition of this important book will intrigue historians, intelligence professionals and general readers alike.