Juan Pujol García turned the Abwehr's intelligence weapon against itself

By Harlan Pryce · August 9, 2026

Germans believed they were managing a valuable asset in Juan Pujol García, but they were actually consuming a product designed in London to shape their perception of reality.

File KV 3/116 in the UK National Archives does not contain the raw intercepts or the whispered confessions of captured spies. Instead, the file's catalogue entry records a synthesized account: "The Abwehr's use of deception material." It is described as an analysis of the German military-intelligence service's use of deception as an "intelligence weapon," a conclusion drawn from the interrogation of prisoners and the study of captured German documents.

To understand the weight of this "weapon," one must look to the origins of the organization. The public record shows the Abwehr was born of necessity and evasion. Forbidden by the 1919 Treaty of Versailles from establishing a formal intelligence apparatus, the Weimar Republic instead embedded an espionage group within the Ministry of Defence in 1920. By 1929, under General Kurt von Schleicher, these fragmented units were centralized. What began as a defensive shield against foreign espionage evolved into an offensive sword, designed to project German influence and mislead adversaries across Europe.

An Intelligence Weapon

The account recorded in KV 3/116 suggests that by the height of the war, the Abwehr had moved beyond simple spying. They were practicing the art of the lie on a systemic scale. The catalogue entry identifies deception not as a byproduct of intelligence work, but as a primary tool—a weapon used to shape the enemy's perception of reality.

This was not a static capability. Related files suggest a shift in how the Third Reich managed its falsehoods. Catalogue entry KV 3/119 describes the activities of the RSHA Militaerisches Amt 1, where Walter Schellenberg, the head of the SD, established a new department. The purpose of this unit was to "co-ordinate the use of intelligence-based deception." The file notes that Schellenberg's efforts built upon the "Abwehr's earlier efforts in this field," implying a transition from the military-led intelligence of the Abwehr to the more centralized, ideological control of the SS-led RSHA.

Walter Schellenberg

Schellenberg’s department represents the professionalization of the plant. While the Abwehr had laid the groundwork, the RSHA sought a coordinated strategy. This coordination was essential because intelligence is a closed loop; if the deception is not synchronized across different channels, the target will spot the contradiction. The documents in KV 3/119 suggest that the Germans were acutely aware of this risk, attempting to streamline how they fed misinformation to the Allies.

However, the effectiveness of any deception weapon depends entirely on the gullibility or the blindness of the recipient. The British Security Service, as seen in the KV series, was not merely a passive recipient of German lies. They were practitioners of the same craft, often with a more disciplined hand.

Juan Pujol García

One of the most striking examples of this counter-war is found in the personal files of the Security Service. Catalogue entries KV 2/66 and KV 2/67 concern Juan Pujol García, known by the codename GARBO. These files contain copies of communications sent by letter and wireless telegraphy to the Germans.

Crucially, these communications incorporated "British deception material." García was not simply a spy; he was a conduit through which the British could feed the Abwehr a curated version of the truth. The very tools the Abwehr used to mislead the Allies—the "intelligence weapon" mentioned in KV 3/116—were turned back upon them. The Germans believed they were managing an asset; in reality, they were consuming a product designed in London.

Channels other than agents

Double agents like García were the high-stakes gambles of the intelligence war, but they were not the only method of manipulation. The British employed a broader spectrum of deception. Catalogue entries KV 4/430 and KV 4/429 describe "policy and procedure regarding channels for deception other than special agents."

These files detail the effort to deceive the German Intelligence Service through means other than the "double-cross system of 'turned' double agents." The primary method cited in these catalogue descriptions was the "spreading of false" information—likely through leaks, planted documents, and diplomatic whispers that appeared organic rather than engineered. By diversifying the channels of deception, the British ensured that the Germans could not simply identify a single traitor to collapse the entire web of lies.

While the catalogue entries for KV 3/116 and its related files provide a map of the conflict, they leave the specific content of the "deception material" to the archives. We see the headers, the names of the players like Schellenberg and García, and the organizational shift from the Abwehr to the RSHA, but the actual text of the captured German reports remains behind the archival curtain. Whether the Abwehr's "weapon" ever truly threatened the Allied high command, or if it was consistently outmatched by the Security Service, remains a question for those who read the pages themselves.