A chicken farmer with no spy training walked into the German Embassy, invented 27 fictitious agents, and single-handedly fooled Hitler into misplacing his forces on D-Day.
Juan Pujol García (1912–1988) was a Spanish double agent who pulled off arguably the greatest deception in the history of espionage entirely on his own initiative. Having developed a deep hatred of both fascism and communism during the Spanish Civil War, he decided he wanted to help the Allies — but when he walked into the British Embassy in Madrid to offer his services, they turned him down. Undeterred, he simply invented his own spy operation.
Rejected by Britain, Pujol talked his way into becoming a German agent by pretending to be a fanatically pro-Nazi Spanish government official. The Germans instructed him to travel to Britain and recruit a spy network. Instead, he moved to Lisbon, never went near Britain, and began fabricating detailed intelligence reports about British military movements — sourced entirely from a tourist guidebook, rail timetables, cinema newsreels, and magazine advertisements.
His fictional reports were so convincing that the Germans not only believed them — they began paying him to expand his network. Pujol invented 27 fictitious sub-agents with distinct personalities, backstories, and information sources. He even arranged for several of them to 'die' when their cover stories became difficult to sustain, collecting condolence payments from German handlers grieving agents who had never existed.
When the British finally discovered the German agent filing intelligence from Lisbon who had never been to Britain, they were equal parts alarmed and impressed. After vetting him, MI5 brought Pujol to London, gave him the codename 'Garbo' (after Greta Garbo, for his supreme acting ability), and paired him with handler Tomás Harris. Together they ran the most elaborate deception operation of the war.
Pujol's greatest contribution came in 1944 with Operation Fortitude — the Allied plan to convince Germany that the D-Day invasion would land at Pas-de-Calais rather than Normandy. Pujol's messages were central to the deception. Crucially, on the night of June 5–6, he transmitted a message confirming Normandy was a feint — and the Germans believed him, keeping entire armored divisions at Calais even as the real invasion secured its beachheads.
Pujol received the rare distinction of being formally decorated by both sides: the Germans awarded him the Iron Cross, while the British made him a Member of the Order of the British Empire. After the war he faked his own death and moved to Venezuela under a new identity, where he ran a bookshop. He was tracked down by a British author in 1984 and finally attended a reunion of veterans in London — where he was met with a standing ovation.