Companion article · Season 1, Episode 3 · By Felix McKenzie
In 1941, a Spanish civilian approached German intelligence officers in Madrid and offered to spy on Britain.
He claimed to be a committed supporter of Nazi Germany, with official connections that would allow him to travel to London.
The Germans accepted his offer.
What they did not know was that Juan Pujol García had already tried to volunteer for British intelligence.
The British had repeatedly rejected him.
Pujol had no established intelligence career, no network of informants, and no professional espionage training. Nevertheless, he was about to become one of the most consequential double agents of the Second World War.
His eventual achievement would depend not on stealing military secrets, but on persuading German intelligence that he possessed them.
Juan Pujol García was born in Barcelona on February 14, 1912.
His early career included work in agriculture and business. He had little of the background normally associated with professional intelligence officers.
The Spanish Civil War, beginning in 1936, shaped his political convictions.
Pujol experienced the conflict from both Republican and Nationalist sides. He subsequently described developing a profound opposition to totalitarianism, particularly the regimes of Adolf Hitler and Francisco Franco.
When the Second World War began, he wanted to contribute to the struggle against Nazi Germany.
During 1941, he approached British representatives in Spain and Portugal, offering his services.
His proposals were rejected on three occasions.
Rather than abandon the idea, Pujol decided to create the credentials that British intelligence apparently believed he lacked.
He approached the Germans instead.
German intelligence accepted Pujol as an agent and provided him with instructions for establishing a network in Britain.
His German codename was Alaric.
Pujol was expected to travel to the United Kingdom, recruit informants, and send information about British military activities.
He did not travel to Britain.
Instead, he established himself in Lisbon, Portugal, and began producing intelligence reports using publicly available reference material.
His sources included travel guides, newspapers, books, and other publications.
He invented informants supposedly operating across Britain and attributed information to them.
These fictional agents had occupations, personal histories, political opinions, and relationships.
The reports were elaborate enough to convince his German handlers that they were receiving information from a functioning intelligence network.
Some contained obvious errors.
One account described Scottish men as willing to do almost anything for a litre of wine, an observation that reflected Pujol's unfamiliarity with everyday British life.
The Germans nevertheless continued accepting his reports.
The deception had begun before Pujol ever reached British territory.
By early 1942, British intelligence had become aware of an unidentified agent sending reports to German intelligence from the Iberian Peninsula.
Pujol eventually established contact with MI6 and demonstrated that he was responsible.
In April 1942, he was brought to Britain.
His activities came under the control of MI5, Britain's domestic security service.
There he began working closely with Tomás Harris, a Spanish-speaking intelligence officer who became his principal handler.
The partnership combined Pujol's imagination and understanding of his German contacts with Harris's knowledge of British intelligence requirements.
The British assigned Pujol the codename Garbo, reflecting his extraordinary ability to sustain convincing fictional identities.
Together, the two men expanded the invented network.
By 1944, it contained 27 fictional sub-agents.
They included a Venezuelan resident in Glasgow, an American soldier, and a Welsh nationalist associated with a pro-Nazi organisation.
Some fictional agents recruited other fictional agents.
Each identity required consistent reporting, plausible movements, and an explanation for how information reached the network.
The result was an elaborate administrative structure that existed almost entirely on paper.
British intelligence understood that false information would be useful only if German commanders trusted its source.
Garbo therefore supplied reports containing a mixture of accurate, misleading, and deliberately delayed information.
During preparations for Operation Torch, the Allied invasion of French North Africa in November 1942, his network reported naval movements associated with the approaching operation.
The information was arranged to arrive too late to provide useful advance warning.
German intelligence nevertheless regarded the report as evidence of Garbo's access to important military information.
His credibility increased.
The correspondence became extensive.
Pujol and Harris produced hundreds of lengthy letters containing reports supposedly gathered by the network.
By August 1943, radio communication had become the principal means of transmitting information to German handlers.
Maintaining the deception required careful coordination.
The fictional agents had to remain consistent, their supposed observations had to fit known circumstances, and information had to be approved before transmission.
The British were not merely inventing stories.
They were maintaining an intelligence organisation that the enemy believed was real.
By early 1944, the Allies were preparing Operation Overlord, the invasion of German-occupied Western Europe.
The planned landings would take place in Normandy.
German commanders expected an invasion but remained uncertain about its location and timing.
The Allies therefore organised an extensive deception campaign under Operation Bodyguard.
One component, Operation Fortitude, sought to convince German intelligence that the principal invasion would occur somewhere other than Normandy.
Fortitude South concentrated attention on the Pas-de-Calais, the French coast closest to Britain.
The deception included fictitious military formations, misleading radio traffic, dummy equipment, and carefully controlled information supplied through double agents.
Garbo's network became an important part of this operation.
His reports supported the impression that substantial Allied forces were preparing to cross the Channel toward Calais.
The invented First United States Army Group, associated with General George S. Patton, provided a convincing explanation for the supposed preparations.
The objective was not simply to conceal Normandy before the landings.
It was also to persuade German commanders that the Normandy operation, once underway, was not the main attack.
On the morning of June 6, Allied forces began landing on the beaches of Normandy.
Garbo's role did not end when the invasion became public.
His network continued reporting that additional Allied forces were preparing for a larger operation against the Pas-de-Calais.
On June 9, Garbo transmitted a particularly important message reinforcing the claim that Normandy was a diversion and that the main assault remained to come.
German intelligence continued treating his information as credible.
The deception contributed to German uncertainty about Allied intentions and helped sustain the belief that forces should remain available to defend the Calais region.
Throughout July and August, German formations remained positioned there while Allied forces expanded their foothold in Normandy.
British intelligence records identify two armoured and nineteen infantry divisions as remaining in the Pas-de-Calais area during that period.
Garbo was not solely responsible for these decisions.
German assessments were influenced by geography, existing military expectations, Allied deception measures, and other intelligence sources.
Nevertheless, his reports reinforced a mistaken interpretation at a critical stage of the campaign.
The Germans never discovered during the war that Garbo was working for Britain.
His handlers continued to regard him as a valuable intelligence asset.
In July 1944, he was awarded the Iron Cross, Second Class, for his supposed services to Nazi Germany.
Later that year, Britain appointed him a Member of the Order of the British Empire.
The two honours reflected entirely different understandings of the same man's activities.
German authorities believed they were rewarding a loyal intelligence operative.
British authorities recognised his contribution to the Allied deception campaign.
The contrast illustrates how thoroughly Garbo had maintained his cover.
After the war, Pujol sought a life away from intelligence operations.
He moved to Venezuela, where he lived for many years outside public attention.
To protect his identity, a story circulated that he had died in Africa in 1949.
For decades, many people believed that account.
In the 1980s, British author Nigel West, the pen name of intelligence historian Rupert Allason, helped locate Pujol.
His story became public again.
Pujol returned to Britain and visited Normandy during commemorations of the Allied landings.
He died in Caracas on October 10, 1988.
By then, the man whose intelligence network had never existed had become an acknowledged figure in the history of Allied military deception.
Garbo's success was not simply a matter of producing convincing false reports.
His operation exploited the relationship between intelligence collection, institutional confidence, and military decision-making.
German intelligence invested time and resources in a network that did not exist.
Reports were received, assessed, transmitted, and incorporated into a wider understanding of Allied intentions.
Each apparently successful report strengthened confidence in the source.
That confidence made later deception more effective.
The system became increasingly committed to information whose origins it had never independently established.
Garbo's story is therefore about more than an unusually imaginative individual.
It concerns the vulnerability of institutions that mistake a consistent stream of information for independently verified intelligence.
The Germans believed they possessed an extensive network inside Britain.
In reality, much of that network consisted of fictional characters maintained by two men working under British intelligence supervision.
The consequences reached the highest levels of German military planning.
Twenty-seven agents did not exist. Their reports did. And the decisions made because of those reports helped shape the course of the war.