Not a single bullet was fired on a battlefield during the long Cold War between NATO and the Warsaw Pact. If a shot were fired, it would have surely meant imminent nuclear destruction of the two sides. The fear of nuclear attack made the War one of economics and espionage. Whoever spent more money would have more military power and therefore be more intimidating. However, in order to know what the money was spent on, the Soviets and the Allies each had their own spies working across enemy lines discovering each other’s secrets. The most common Soviet spies were Allied citizens who had secretly defected. This is illustrated in Anthony Powell’s penultimate volume of his Dance to the Music of Time series, Temporary Kings.
The most famous of all Soviet spies in England were the Cambridge Four (although the name is somewhat outdated; since the name was coined, many more people have confessed to being part of the espionage ring). They were labeled this because they were recruited to be communist spies while attending Cambridge University. The four proven spies were Kim Philby, Donald Maclean, Guy Burgess, and Anthony Blunt, all of who were high-ranking English government officials.
Anthony Blunt, a discrete homosexual, was the oldest of the group. Highly intelligent and hard working, he was recruited by the Soviet government in 1933 after a visit to Russia. He had been a member of a secret society at Cambridge known as the Cambridge Apostles, which was strongly Marxist. During World War II, Blunt served in MI5, the British equivalent of the FBI. After the war, he became the director of the Courtauld Institute of Art in London, where he retained the post until 1972. Coincidentally, or perhaps not, he was particularly knowledgeable in the works of Nicolas Poussin, the painter of A Dance to the Music of Time. He was instrumental in recruiting Guy Burgess and Donald Maclean.
Guy Burgess, a flamboyant homosexual, was once the lover of Anthony Blunt. Unlike Blunt, however, he possessed none of the characteristics inherent in a spy. He was loudmouthed, unpredictable, and constantly drunk. Nonetheless, he was a former member of the Cambridge Apostles with Blunt and held the position as secretary to the British Deputy Foreign Minister, Hector McNeil. As his secretary, Burgess had access to top-secret documents, which he would remove from the office at night to be photographed, and then have them back on McNeil’s desk in the morning.
Donald Maclean, contrary to popular belief, was neither a committed homosexual nor the frequent lover of Guy Burgess (although Burgess claims he had seduced him). Maclean was recruited into Soviet intelligence by Blunt while at Cambridge. Upon graduating, he worked in the Foreign Office in London, where he passed secrets on to the KGB. During World War II, he worked in the British Embassy in Paris, and escaped back to England when Germany captured France. While in England, Maclean continued to report to the KGB, and informed them that by 1943, the British will have completed a uranium bomb. Maclean was then transferred to Washington, where he stayed between 1944 and 1948. During this period, he was Stalin’s main source of information regarding the Allied development of the atomic bomb. Although he never transmitted any technical data, he reported on its development and progress, and even on the amount of uranium available in the United States. “Maclean’s reports to his KGB controller helped the Soviets not only to build their own atomic bomb, but also to estimate their nuclear arsenal’s relative strength against that of the United States.” (Wikipedia) Maclean also monitored the secret messages between President Truman and Prime Minister Churchill, and was able to transfer important information to the Soviets.
Kim Philby is believed to be the most successful of the Cambridge Four in providing classified information to the Soviet Union. Philby was introduced to Communism at Cambridge University, where he became acquainted with the other Cambridge Soviet spies. In 1940, Philby, with the help of Guy Burgess, was recruited as a British intelligence officer, and eventually was appointed as the head of counter-espionage in Spain, Portugal, Gibraltar, and Africa. He was so good at it that in 1944 he was appointed the head of counter-espionage in the Soviet Union, the perfect job for a Soviet spy. “Philby was also able to tell Moscow just how much the CIA knew about its operations. Moscow asked Philby not to bother saving spies who had served their purpose, but he sat on several reports that revealed the names of other Soviet spies anyway.” (Wikipedia)
The downfall of the Cambridge Four began in 1949, when Philby was asked to find a Soviet spy known as Homer who had passed nuclear test secrets on to the Soviets. Philby was able to deduce that Homer was in fact Donald Maclean. Philby informed Maclean of the evidence against him, so Maclean and Burgess fled the country together and escaped to Russia in 1951 (It is not clear why Burgess fled with Maclean; there was no evidence that Burgess had been a Soviet spy.) Their publicized defection and flight is referenced in The Temporary Kings. As it was clear that they had been tipped off, Philby was immediately under suspicion. The investigation turned up nothing substantial, but he was forced to resign as a British intelligence officer and eventually became a journalist in the Middle East. In 1961, Philby freely confessed to being a Soviet spy. In 1979, Blunt was publicly accused of being a Soviet agent by investigative journalist Andrew Boyle. Later that year, Prime Minister Margaret Thatcher admitted that Blunt had secretly confessed to being a spy 15 years earlier, but was granted immunity in exchange for everything he knew.
Powell’s inclusion of the possibility of Widmerpool being a Soviet spy adds a nice touch of realism to the time period. In Peter Wright’s Spycatcher, he reveals that in the 1950’s, KGB officers and spies outnumbered MI5 officers by more than three to one. Widmerpool, who has recently become a Communist, is a newly appointed member of the Peerage, and would have access to relatively important information. When Widmerpool arrives in Italy, he is frantically searching for a Dr. Belkin, a Soviet citizen (more likely an agent). These pieces of circumstantial evidence all point towards Widmerpool being a spy for the Soviets.
http://educationforum.ipbhost.com/index.php?showtopic=9337
http://en.wikipedia.org/wiki/Cambridge_Five
http://en.wikipedia.org/wiki/Kim_Philby
http://en.wikipedia.org/wiki/Donald_Duart_Maclean
http://en.wikipedia.org/wiki/Guy_Burgess
http://en.wikipedia.org/wiki/Anthony_Blunt
http://www.trutv.com/library/crime/terrorists_spies/spies/cambridge/2.html