Independent spying In 1940, during the early stages of World War II, Pujol decided that he must make a contribution "for the good of humanity" by helping Britain, which was at the time Germany's only adversary. He contacted Friedrich Knappe-Ratey, an agent in Madrid, codenamed "Frederico". The accepted Pujol and gave him a crash course in espionage (including secret writing), a bottle of
invisible ink, a codebook, and £600 for expenses. His instructions were to move to Britain and recruit a network of British agents. He claimed to be travelling around Britain and submitted his travel expenses based on fares listed in a British railway guide. Pujol's unfamiliarity with the
non-decimal system of currency used in Britain at the time was a slight difficulty. At this time Great Britain's unit of currency, the
pound sterling, was subdivided into 20 shillings, each having twelve pence. Pujol was unable to total his expenses in this complex system, so simply itemised them, and said that he would send the total later. During this time he created an extensive network of fictitious sub-agents living in different parts of Britain. Because he had never actually visited the UK, he made several mistakes, such as claiming that his alleged contact in
Glasgow "would do anything for a litre of wine", unaware of Scottish drinking habits or that the UK did not use the metric system. approached the United States after it had entered the war, contacting U.S. Navy Lieutenant Patrick Demorest in the
naval attache's office in Lisbon, who recognised Pujol's potential. Mills passed his case over to the Spanish-speaking officer Harris. On occasion, he had to invent reasons why his agents had failed to report easily available information that the Germans would eventually know about. For example, he reported that his (fabricated) Liverpool agent had fallen ill just before a major fleet movement from that port, and so was unable to report the event. To support this story, the agent eventually "died" and an
obituary was placed in the local newspaper as further evidence to convince the Germans. The Germans were also persuaded to pay a pension to the agent's "widow". For radio communication, "Alaric" needed the strongest hand encryption the Germans had. The Germans provided Garbo with this system, which was in turn supplied to the codebreakers at
Bletchley Park. Garbo's encrypted messages were to be received in Madrid, manually decrypted, and re-encrypted with an
Enigma machine for retransmission to Berlin. Having both the
original text and the Enigma-encoded intercept of it, the codebreakers had the best possible source material for a
chosen-plaintext attack on the Germans' Enigma key.
Operation Fortitude In January 1944, the Germans told Pujol that they believed a large-scale invasion in Europe was imminent and asked to be kept informed. This invasion was
Operation Overlord, and Pujol played a leading role in
Operation Fortitude, the deception campaign to conceal Overlord. He sent over 500 radio messages between January 1944 and
D-Day, at times more than twenty messages per day. During planning for the Normandy beach invasion, the Allies decided that it was vitally important that the German leaders be misled into believing that the landing would happen at the
Strait of Dover. OKW accepted Garbo's reports so completely that they kept two armoured divisions and 19 infantry divisions in the Pas de Calais waiting for a second invasion through July and August 1944. The German Commander-in-Chief in the west, Field Marshal
Gerd von Rundstedt, refused to allow General
Erwin Rommel to move these divisions to Normandy. In late June, Garbo was instructed by the Germans to report on the falling of
V-1 flying bombs. Finding no way of giving false information without arousing suspicion, and being unwilling to give correct information, Harris arranged for Garbo to be "arrested." He returned to duty a few days later, now having a "need" to avoid London and forwarded an "official" letter of apology from the Home Secretary for his unlawful detention. The Germans paid Pujol US$340,000 () over the course of the war to support his network of agents. == Honours ==