Volume 5 of the Official History of Intelligence in the Second World War, Strategic Deception, brings the series to an end. Strategic deception depends for its success on the availability of good security and good intelligence. The first three volumes of the series described the intelligence channels that gave the Allies their incomparable insight into enemy capabilities and intentions.

June 1940. The Italians declared war on the British. Completely unprepared for war, the British had only 35,000 troops to defend Egypt. Opposing them, the Italian army in Libya numbered at least 215,000; in East Africa, the Italians could muster another 200,000 men against a meager 19,000 British and commonwealth troops positioned in the Sudan and East Africa. Out-numbered and unlikely to receive sizable reinforcements of men or desperately needed supplies, it is surprising that the British survived. But they did. How? They got creative. Under the leadership of General Archibald P. Wavell, the commander-in-chief of the Middle East, the British set out to greatly exaggerate the size of their forces, supply levels, and state of battle readiness. When their deceitful charades proved successful, Wavell turned trickery into a profession and created an entirely new agency dedicated to carrying out deception. “A” Force: The Origins of British Military Deception during the Second World War looks at how and why the British first employed deception in WWII. More specifically, it traces the development of the "A" Force organization - the first British organization to practice both tactical and strategic deception in the field. Formed in Cairo in 1941, "A" Force was headed by an unconventional colonel named Dudley Wrangel Clarke. Because there was no precedent for Clarke's "A" Force, it truly functioned on a trial-and-error basis. The learning curve was steep, but Clarke was up for the challenge. By the Battle of El Alamein, British deception had reach maturity. Moreover, it was there that the deceptionists established the deception blueprint later used by the London planners used to plan and execute Operation Bodyguard, the campaign to conceal Allied intentions regarding the well-known D-day landing at Normandy. In contrast to earlier deception histories that have tended to focus on Britain’s later deception coups (Bodyguard), thus giving the impression that London masterminded Britain’s deception efforts, this work clearly shows that British deception was forged much earlier in the deserts of Africa under the leadership of Dudley Clarke, not London. Moreover, it was born not out of opportunity, but out of sheer desperation. A” Force explores an area of deception history that has often been neglected. While older studies and documentaries focused on the D-day deception campaign and Britain’s infamous double-agents, this work explores the origins of Britain’s deception activities to reveal how the British became such masterful deceivers.

The first three volumes of the series dealt with the influence of intelligence on strategy and operations. Volume 4 analyzes the contribution made by intelligence to the work of the authorities responsible for countering the threats of subversion, sabotage and intelligence gathering by the enemy in the United Kingdom and British territories overseas, and neutral countries. It describes the evolution of the security intelligence agencies between the wars and the security situation in September 1939. This volume reviews the arguments about security policy regarding enemy aliens, Fascists and Communists in the winter of 1939-1940 and during the Fifth Column panic in the summer of 1940. It describes how the security system, still at that time inadequately organized and poorly informed, was developed into an efficient machine and how, with invaluable help from signals intelligence and other sources and by the skillful use of double agents, the operation of the enemy intelligence services were effectively countered. In conclusion, it notes the consistent subservience of the Communist Party to the interests of the USSR and the likely threat to British security.

In February 1942, intelligence officer Victor Jones erected 150 tents behind British lines in North Africa. "Hiding tanks in Bedouin tents was an old British trick," writes Nicholas Rankin. German general Erwin Rommel not only knew of the ploy, but had copied it himself. Jones knew that Rommel knew. In fact, he counted on it--for these tents were empty. With the deception that he was carrying out a deception, Jones made a weak point look like a trap. In A Genius for Deception, Nicholas Rankin offers a lively and comprehensive history of how Britain bluffed, tricked, and spied its way to victory in two world wars. As Rankin shows, a coherent program of strategic deception emerged in World War I, resting on the pillars of camouflage, propaganda, secret intelligence, and special forces. All forms of deception found an avid sponsor in Winston Churchill, who carried his enthusiasm for deceiving the enemy into World War II. Rankin vividly recounts such little-known episodes as the invention of camouflage by two French artist-soldiers, the creation of dummy airfields for the Germans to bomb during the Blitz, and the fabrication of an army that would supposedly invade Greece. Strategic deception would be key to a number of WWII battles, culminating in the massive misdirection that proved critical to the success of the D-Day invasion in 1944. Deeply researched and written with an eye for telling detail, A Genius for Deception shows how the British used craft and cunning to help win the most devastating wars in human history.

Little attention has been paid to the murky, ultra-business of gathering intelligence among and forming estimates about friendly powers, and friendly or allied military forces. How rarely have scholars troubled to discover when states entered into coalitions or alliances mainly and explicitly because their intelligence evaluation of the potential partner concluded that making the alliance was, from the originator's national security interest, the best game in town. The twentieth century has been chosen to enhance the coherence of and connections between, the subject matter of this under-explored part of intelligence studies.

This book reappraises the ill-fated raid named operation Jubilee, focusing on aspects such as naval and air operations in the Channel, signals, radar intelligence, agents and deception. It draws from official archives, both German and Allied. From these voluminous but fragmented records, many of which have been destroyed, classified or lost, the book aims to thread the evidence together.