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FAMILY AND EDUCATION Dillwyn Knox, the fourth of six children, E. V. Knox and Wilfred. L. Knox . He was father of Oliver Arbuthnot Knox . Dillwyn, known as "Dilly," Knox was educated at Summer Fields School , Oxford, and then Eton College . He studied classics at King's College , Cambridge , and was elected a fellow in 1909 . CODEBREAKING Knox was one of the British participants in the July 25 , 1939 , Polish-French-British conference held at the Polish Cipher Bureau facility at Pyry , south of Warsaw , Poland , in which the Poles disclosed to their French and British allies their achievements in Enigma Decryption . Knox was chagrined — but grateful — to learn how simple was the solution of the Enigma's entry ring (standard Alphabetical Order ). After the meeting, he sent the Polish cryptologists a very gracious note in Polish, on official British government stationery, thanking them for their assistance, and enclosing a beautiful scarf featuring a picture of a Derby race, and a set of paper ''batons'' that he had presumably used in his attempts to break the German Enigma. To break non-steckered Enigma Machine s, Knox used a system known as Rodding , a linguistic as opposed to mathematical way of breaking codes. This technique was applied successfully against the Enigma used by the Italian Navy and the German Abwehr . Knox's work was cut short as he fell ill with , where he received the CMG Fitzgerald, 1977, p. 249-250. He died on 27 February 1943. REFERENCES
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