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John Cairncross was a British civil servant who became an intelligence officer and spy during the Second World War. As a Soviet double agent, he passed to the Soviet Union the raw Tunny decryptions that influenced the Battle of Kursk. He was alleged to be the fifth member of the Cambridge Five.
John Cairncross (1913-1995) was a British literary scholar, civil servant, and Soviet atomic spy. In the 1990s, Cairncross was identified as the “fifth man” in the Cambridge spy ring, which consisted of four other Soviet double agents: Anthony Blunt, Guy Burgess, Donald Maclean, and Kim Philby.
Jul 28, 2019 · A member of the infamous Cambridge Ring of Five, he leaked highly sensitive documents from Bletchley Park, MI6 and the Treasury to the Soviet Union – including the first atomic secrets and raw decrypts from Enigma and Tunny that influenced the outcome of the Battle of Kursk.
Though these embarrassing, and highly visible, revelations shook the British establishment, unbeknownst the public, another man, John Cairncross (1913-1995), had also been working for the Soviet Union in secret. Like the other four, Cairncross had attended Cambridge in the 1930s, where he too was radicalised.
• June 2021. Watch next. Between 1937 and 1951, John Cairncross and the other members of the Cambridge Ring of Five (Kim Philby, Donald Maclean, Guy Burgess and Anthony Blunt), all entered into the service of the British state and into highly sensitive positions. All the while they were secretly leaking thousands of documents to Moscow.
John Cairncross. History Learning > Modern World History > The Cold War > Spies of the Cold War Era > John Cairncross spied for the USSR at Bletchley Park in World War Two. In 1979 it was claimed that he was the ‘Fifth man’ in the Cambridge Five spy ring. John Cairncross was born on 25 July 1913 in Lesmahagow, Scotland.
May 13, 2019 · John Cairncross was among the most damaging spies of the twentieth century. A member of the infamous Cambridge Ring of Five, he leaked highly sensitive documents from Bletchley Park, MI6 and...
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