Knowledge (XXG)

Dilly Knox

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1045:"Dillwyn was from his student years an unwavering atheist." Alan Hollinghurst, "The Victory of Penelope Fitzgerald" (a review of Hermione Lee, Penelope Fitzgerald : A Life, Knopf, 488 pp.), The New York Review of Books, vol. LXI, no. 19 (4 December 2014), p. 8. (The article comprises pp. 8, 10, 12.) 705:
represented the GC&CS at the first Polish–French–British meeting at Paris in January 1939. The Poles were under order to disclose nothing of importance, leaving the British codebreakers disappointed. Knox's description of his system of rodding impressed the Polish codebreakers and they requested
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During the First World War he had been elected Librarian at King's College, but never took up the appointment. After the war Knox intended to resume his research at King's, but was persuaded by his wife to remain at his secret work; indeed, so secret was this work that his own children had no idea,
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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 sending "sincere thanks for your cooperation and patience". Enclosed were a beautiful scarf featuring a picture of a
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of the Admiralty Old Building, where some of his work was done in the bath. He persuaded his superiors to have a bathtub installed in his office in the cryptanalysis section of the British Admiralty (in Room 53). In 1917, Knox followed Room 40 with its expansion into
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States "Professor Denis Smyth, of the University of Toronto, an expert on Second World War intelligence operations, said that the British codebreaker Alfred Dilwyn Knox cracked the code of Franco's machine in 1937, but 'this information was not passed on to the
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Knox grasped everything very quickly, almost quick as lightning. It was evident that the British had been really working on Enigma ... So they didn't require explanations. They were specialists of a different kind, of a different
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Enigma: How the German Machine Cipher was Broken, and how it was Read by the Allies in World War Two - Edited and translated by Christopher Kasparek, Frederick, Maryland (a substantially revised and augmented translation of
2067: 777:), a good personal relationship was quickly established at the conference. The good impression made by Rejewski on Knox played an important role in increasing recruitment of mathematicians to 928: 955:
took charge of running ISK and was appointed head after Knox's death. By the end of the war, ISK had decrypted and disseminated 140,800 messages. Intelligence gained from these
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until his death in 1943. He built the team and discovered the method that broke the Italian Naval Enigma, producing the intelligence credited with Allied victory at the
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These 'batons' were known as rods to the British and had been used to solve the Spanish Enigma. Knox's rodding method was later used to break the Italian Naval Enigma.
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It was such an obvious thing to do, really a silly thing to do, that nobody, not Dilly Knox or Tony Kendrick or Alan Turing, ever thought it worthwhile trying it.
398: 880:) developed a system known as 'rodding', a linguistic as opposed to mathematical way of breaking codes. This technique worked on the Enigma used by the 596:– short sections of plain text – could be guessed. When – a decade later – Knox picked up this work, he developed a more effective algebraic system ( 2102: 2072: 810:
I don't know how Knox's method was supposed to work, most likely he had hoped to vanquish Enigma with the batons. Unfortunately we beat him to it.
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He married Olive Rodman in 1920, forgetting to invite two of his three brothers to his wedding. The couple had two sons, Oliver and Christopher.
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fragments, but finally managing to decipher the text of the Herodas papyri. The Knox-Headlam edition of Herodas finally appeared in 1922.
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in 1927 on behalf of GC&CS. Foss found "a high degree of security" but wrote a secret paper describing how to attack the machine if
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used rodding to decrypt intercepted Italian naval signals describing the sailing of an Italian battle fleet, leading to the
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Oh, if a time should ever come when we're demobilized How we shall miss the interests which once life comprised!
1997: 1919: 931:, who had commanded the victorious fleet at Matapan, went to Bletchley to congratulate 'Dilly and his girls'. 643:. On 24 April 1937, Knox broke the Spanish Enigma but knowledge of this breakthrough was not shared with the 310:
As Chief Cryptographer, Knox played an important role in the Polish–French–British meetings on the eve of the
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in September 1939, and occasionally visited GC&CS's London HQ to discuss this problem with Knox. In the
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until many years after his death, what he did for a living, and his contribution to the war effort.
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much of the German admiral's flag code by exploiting an operator's love of romantic poetry.
1638: 845:, staying with Knox and his wife. By November 1939 Turing had completed the design of the 815: 750: 716: 647:. Soon afterwards, Knox began to attack signals between Spain and Germany encrypted using 429: 300: 444:, at King's for a few weeks in 1910, but Macmillan found him "austere and uncongenial". 1759:(2011). "Chapter 19: Colossus and the Dawning of the Computer Age". In Erskine, Ralph; 1387: 897: 873: 778: 762: 740: 686: 581: 471: 467: 417: 370: 334: 330: 1738: 2041: 1812:
Action This Day: From Breaking of the Enigma Code to the Birth of the Modern Computer
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Action This Day: From Breaking of the Enigma Code to the Birth of the Modern Computer
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Action This Day: From Breaking of the Enigma Code to the Birth of the Modern Computer
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Action This Day: From Breaking of the Enigma Code to the Birth of the Modern Computer
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The Secrets of Station X: How the Bletchley Park codebreakers helped win the war
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mansion, as head of a research section, which contributed significantly to
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Seizing the Enigma: The Race to Break the German U-boat Codes, 1939-1943
1675:(2011). "Chapter 6: Breaking Italian Naval Enigma". In Erskine, Ralph; 1383: 842: 521: 475: 463: 451: 421: 292: 147: 1227:, online edition, Oxford University Press, 2014, retrieved 9 May 2014 1790:(2011). "Chapter 3: Reminiscences on the Enigma". In Erskine, Ralph; 891: 736: 732: 667: 585: 350: 342: 1251:
Dod's Peerage, Baronetage and Knightage of Great Britain and Ireland
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Enigma. Intelligence Services Knox (ISK) was established to decrypt
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from 1903, and in 1909 was elected a Fellow following the death of
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Battle of wits: The Complete Story of Codebreaking in World War II
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English lassies rustling papers through the sodden Bletchley day.
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These have knelled your fall and ruin, but your ears were far away
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worked on Enigma during the months leading to the outbreak of the
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Between the two World Wars Knox worked on the great commentary on
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decrypts played an important part in ensuring the success of the
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Colossus: The Secrets of Bletchley Park's Codebreaking Computers
526: 993:. He died on 27 February 1943. A biography of Knox, written by 420:, from whom he inherited extensive research into the works of 1120: 1118: 1116: 1114: 1112: 1110: 1108: 1106: 1104: 1102: 1100: 1098: 1096: 1094: 1092: 685:
and signal intercepts, some of which must have been made in
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Soon after war broke out in 1914, Knox was recruited to the
436:. He and Keynes were lovers at Eton. Knox privately coached 727:, held on 25–26 July 1939 at the Polish Cipher Bureau (at 1864:
Room 40 & the Zimmermann telegram/German codebreakers
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Marian Rejewski, 1905–1980: Living with the Enigma Secret
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in 1925, Knox bought the Enigma 'C' machine evaluated by
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Dillwyn Knox, the fourth of six children, was the son of
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communications. In early 1942, with Knox seriously ill,
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victory at Matapan to this intelligence; Admiral Sir
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Companions of the Order of St Michael and St George
1024:with poetry, which remained classified until 1978. 969:, the Allied campaign to deceive the Germans about 222: 212: 204: 181: 161: 140: 119: 109: 99: 91: 72: 46: 34: 1931:(2 ed.), University Publications of America, 1707: 1168: 1166: 1164: 1162: 1160: 1158: 896:. Knox worked in 'the Cottage', next door to the 1531: 981:Knox's work was cut short when he fell ill with 532:Among other tasks, he was involved in breaking: 275:(23 July 1884 – 27 February 1943) was a British 1885:, Houghton Mifflin Co., pp. 25–26, 84–85, 1842:Inside Room 40: The Codebreakers of World War I 1004: 808: 787: 708: 616:) adopted Enigma in 1926, adding a plug-board ( 584:became available commercially in the 1920s. In 556: 490: 353:decrypts, including intelligence important for 1607:(2004). "Knox, (Alfred) Dillwyn (1884–1943)". 1253:, Sampson Low, Marston & Co., 1904, p. 983 677:in 1938, obtaining from the Bureau details of 404:Dillwyn—known as "Dilly"—Knox was educated at 1542: 1540: 1299:. Archived from the original on 15 June 2006. 1080: 1078: 881: 600:) based on the principles described by Foss. 8: 1613:(online ed.). Oxford University Press. 1491: 1489: 1487: 1189: 956: 946: 940: 889: 867: 690: 670: 648: 627: 617: 609: 1973:. Oxford University Press. pp. 18–35. 1324: 1322: 1320: 1015:Dilly Knox, Epitaph on Matapan to Mussolini 666:GC&CS began to discuss Enigma with the 470:, damaging his eyesight while studying the 399:John Arbuthnott, 8th Viscount of Arbuthnott 1731:Bletchley Park Technical Articles: Rodding 1546: 1239: 31: 1952:, London, UK: Weidenfeld & Nicolson, 1767:. Biteback Publishing. pp. 305–327. 1495: 2108:Foreign Office personnel of World War II 1507: 295:codebreaking unit he helped decrypt the 2078:People educated at Summer Fields School 1798:. Biteback Publishing. pp. 35–39. 1683:. Biteback Publishing. pp. 79–92. 1610:Oxford Dictionary of National Biography 1074: 1038: 2014:Supermac: The Life of Harold Macmillan 1584:. Biteback Publishing. pp. 1–12. 1420: 1358: 1302: 1205: 1203: 1201: 1199: 1197: 1084: 1054: 849:— a radical improvement of the Polish 1558: 1370: 1334:- 'Classics Ireland' Volume 9 (2002)" 1221:"Peck, Winifred Frances, (Lady Peck)" 1209: 1172: 1150: 1124: 7: 2098:Fellows of King's College, Cambridge 1860:"Codes, Ciphers, & Codebreaking" 1844:, London, UK: Ian Allan Publishing, 1479: 806:winner and a set of paper 'batons'. 333:, he worked on the cryptanalysis of 2058:Alumni of King's College, Cambridge 1449:. Biteback Publishing. p. 18. 168:Fellow of King's College, Cambridge 1899:Keeley, Graham (24 October 2008), 1519: 1431: 761:who solved the plugboard-equipped 706:his presence at a second meeting. 657:On the eve of the Second World War 494:has never, it's true, been to sea 25: 1988:Staff writer (17 November 2004), 1810:(Updated and extended version of 1779:(Updated and extended version of 1695:(Updated and extended version of 1596:(Updated and extended version of 939:In October 1941, Knox solved the 769:, approached the problem through 563:Dilly the Dodo, Alice in ID25 by 553:Government Code and Cypher School 397:. His father was a descendant of 305:Government Code and Cypher School 173:Order of St Michael and St George 27:British cryptographer (1884–1943) 1655:Dilly: The Man Who Broke Enigmas 725:Polish–French–British conference 697:(Polish cryptographers). Knox, 2103:Deaths from lymphoma in England 2073:People educated at Eton College 2034:at Frode Weierud’s CryptoCellar 1950:Enigma: The Battle for the Code 1796:The Bletchley Park Codebreakers 1765:The Bletchley Park Codebreakers 1681:The Bletchley Park Codebreakers 1637:(2005), "Marian and Dilly", in 1582:The Bletchley Park Codebreakers 1020:Knox celebrated the victory at 345:Enigma. By the end of the war, 299:which brought the USA into the 194: 921:Director of Naval Intelligence 888:(Italian Navy) and the German 861: 662:Polish–French–British meetings 1: 1996:, London, UK, archived from 1627:UK public library membership 393:, and uncle of the novelist 2088:20th-century cryptographers 1291:Bt, Sir William Arbuthnot. 902:cryptanalysis of the Enigma 500:in a bath in the Admiralty. 36:Alfred Dillwyn "Dilly" Knox 2129: 987:Hughenden, Buckinghamshire 935:Intelligence Services Knox 341:. In 1941, Knox broke the 1332:Classics and Intelligence 1309:: CS1 maint: unfit URL ( 723:Knox attended the second 496:but though not in a boat 466:that had been started by 414:King's College, Cambridge 412:. He studied classics at 349:had disseminated 140,800 347:Intelligence Service Knox 285:King's College, Cambridge 114:King's College, Cambridge 1281:, vol. 177, 1845, p. 311 1278:The Gentleman's Magazine 1267:, vol. 20, 1847, p. 1171 989:, where he received the 377:; he was the brother of 361:Personal life and family 1443:Smith, Michael (2011). 1396:The Mimes and Fragments 1229:(subscription required) 965:of MI5 and MI6, and in 915:in March 1941. Admiral 841:Turing was recorded in 622:) to improve security. 498:he has served afloat — 2113:People from Headington 2063:British cryptographers 2032:Description of rodding 1946:Sebag-Montefiore, Hugh 1619:10.1093/ref:odnb/37641 1022:Battle of Cape Matapan 1018: 957: 947: 941: 913:Battle of Cape Matapan 890: 882: 868: 820: 799: 773:(whereas Knox applied 721: 691: 671: 649: 628: 618: 610: 569: 511: 339:Battle of Cape Matapan 217:Edmund Arbuthnott Knox 2093:Bletchley Park people 2083:British papyrologists 2012:Thorpe, D.R. (2010). 1840:Gannon, Paul (2011), 1532:Sebag-Montefiore 2000 1297:www.kittybrewster.com 862:Knox's rodding method 825: 492:The sailor in Room 53 303:. He then joined the 291:. As a member of the 1819:Fitzgerald, Penelope 653:ed Enigma machines. 458:Academic scholarship 428:he was friends with 406:Summer Fields School 375:Bishop of Manchester 316:Polish cryptanalysis 2018:Chatto & Windus 1920:Kozaczuk, Władysław 1574:Andrew, Christopher 967:Operation Fortitude 963:Double-Cross System 681:Enigma supplied by 538:Zimmermann Telegram 434:John Maynard Keynes 408:, Oxford, and then 395:Penelope Fitzgerald 297:Zimmermann Telegram 250:Penelope Fitzgerald 51:Alfred Dillwyn Knox 1814:Bantam Press 2001) 1783:Bantam Press 2001) 1704:Budiansky, Stephen 1699:Bantam Press 2001) 1600:Bantam Press 2001) 1549:, pp. 249–250 783:alphabetical order 771:permutation theory 703:Alastair Denniston 608:The Germany Navy ( 389:, Ethel Knox, and 1980:978-0-19-957814-6 1938:978-0-89093-547-7 1892:978-0-395-42739-2 1851:978-0-7110-3408-2 1832:978-0-00-711830-4 1823:The Knox Brothers 1721:978-0-684-85932-3 1664:978-1-906447-01-4 1625:(Subscription or 1190:Staff writer 2004 1001:Classified poetry 929:Andrew Cunningham 641:Spanish Civil War 576:Commercial Enigma 505:Alice in ID25 by 474:'s collection of 258: 257: 171:Companion of the 86:, Buckinghamshire 16:(Redirected from 2120: 2021: 2008: 2007: 2005: 1984: 1962: 1941: 1915: 1914: 1912: 1895: 1874: 1872: 1870: 1854: 1836: 1809: 1778: 1752: 1751: 1749: 1744:on 11 April 2007 1743: 1737:, archived from 1736: 1724: 1713: 1694: 1668: 1646: 1645:, pp. 67–74 1639:Rejewski, Marian 1630: 1622: 1595: 1561: 1556: 1550: 1544: 1535: 1529: 1523: 1517: 1511: 1505: 1499: 1498:, pp. 95–96 1493: 1482: 1477: 1468: 1467: 1465: 1463: 1440: 1434: 1429: 1423: 1418: 1409: 1408: 1380: 1374: 1368: 1362: 1356: 1350: 1349: 1347: 1345: 1340:on 30 March 2022 1336:. 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694: 693:Biuro Szyfrów 688: 684: 680: 675: 674: 669: 661: 656: 654: 651: 646: 642: 638: 635: 630: 626:supplied non- 625: 620: 614: 613: 603: 601: 599: 595: 591: 587: 583: 575: 573: 566: 559: 552: 547: 542: 539: 535: 534: 533: 530: 528: 523: 519: 518:cryptological 516: 508: 501: 486: 481: 479: 477: 473: 469: 465: 457: 455: 453: 448: 445: 443: 440:, the future 439: 435: 431: 427: 426:undergraduate 423: 419: 415: 411: 407: 402: 400: 396: 392: 391:Winifred Peck 388: 384: 380: 376: 372: 368: 360: 358: 356: 352: 348: 344: 340: 336: 332: 327: 325: 321: 317: 313: 308: 307:(GC&CS). 306: 302: 298: 294: 290: 286: 282: 278: 274: 270: 266: 262: 251: 248: 246: 245:Winifred Peck 243: 241: 238: 236: 233: 231: 228: 227: 225: 221: 218: 215: 211: 207: 203: 184: 180: 174: 170: 167: 166: 164: 160: 154: 151: 149: 146: 145: 143: 139: 133: 130: 128: 125: 124: 122: 118: 115: 112: 108: 105: 102: 98: 94: 90: 85: 75: 71: 66: 49: 45: 41: 33: 30: 19: 2013: 2002:, retrieved 1998:the original 1993: 1970: 1949: 1928: 1923: 1909:, retrieved 1907:, p. 27 1904: 1882: 1867:. Retrieved 1863: 1841: 1825:. Flamingo. 1822: 1811: 1795: 1780: 1764: 1746:, retrieved 1739:the original 1730: 1709: 1696: 1680: 1673:Batey, Mavis 1657:. Dialogue. 1654: 1651:Batey, Mavis 1642: 1635:Batey, Mavis 1608: 1605:Batey, Mavis 1597: 1581: 1554: 1527: 1515: 1503: 1460:. Retrieved 1445: 1438: 1427: 1395: 1391: 1378: 1366: 1361:, p. 27 1354: 1342:. Retrieved 1338:the original 1331: 1296: 1286: 1276: 1272: 1262: 1258: 1250: 1246: 1235: 1224: 1216: 1175:, p. xi 1058:Republicans. 1050: 1041: 1019: 1006: 980: 938: 917:John Godfrey 908: 906: 884:Regia Marina 865: 829: 821: 809: 800: 788: 767:Nazi Germany 748: 722: 709: 665: 637:Nationalists 624:Nazi Germany 612:Kriegsmarine 607: 597: 593: 579: 570: 557: 531: 515:Royal Navy's 512: 491: 482:Codebreaking 461: 449: 446: 410:Eton College 403: 383:Wilfred Knox 364: 346: 328: 309: 281:papyrologist 279:scholar and 268: 264: 260: 259: 235:Wilfred Knox 187:Olive Rodman 132:Papyrologist 78:(1943-02-27) 61:23 July 1884 29: 18:Dillwyn Knox 2053:1943 deaths 2048:1884 births 2004:14 February 1879:Kahn, David 1869:14 February 1748:14 February 1567:Works cited 1522:, p. 1 1421:Andrew 2011 1392:Knox, A. D. 1359:Thorpe 2010 1225:Who Was Who 1085:Gannon 2011 1055:Keeley 2008 995:Mavis Batey 953:Peter Twinn 909:The Cottage 831:Alan Turing 795:Peter Twinn 775:linguistics 731:, south of 645:Republicans 565:Frank Birch 507:Frank Birch 424:. While an 387:Ronald Knox 369:, tutor at 367:Edmund Knox 289:codebreaker 240:Ronald Knox 127:Codebreaker 120:Occupations 100:Citizenship 2042:Categories 1788:Foss, Hugh 1629:required.) 1559:Batey 2009 1462:26 October 1371:Batey 2009 1210:Batey 2004 1173:Batey 2009 1151:Smith 2010 1125:Batey 2011 1028:References 744:decryption 520:effort in 450:He was an 379:E. V. Knox 373:and later 230:E. V. Knox 65:Headington 57:1884-07-23 1905:The Times 1480:Foss 2011 1070:Citations 878:Hugh Foss 749:Although 699:Hugh Foss 679:Wehrmacht 590:Hugh Foss 223:Relatives 153:GC&CS 141:Employers 1948:(2000), 1922:(1984), 1881:(1991), 1821:(2002). 1794:(eds.). 1763:(eds.). 1706:(2000), 1679:(eds.). 1653:(2009). 1580:(eds.). 1394:(eds.), 1386:(2010), 1305:cite web 1013:—  983:lymphoma 813:—  792:—  765:used by 714:—  634:Franco's 561:—  503:—  277:classics 205:Children 67:, Oxford 1641:(ed.), 1384:Herodas 1344:22 June 869:stecker 843:Naphill 650:stecker 639:in the 629:stecker 619:stecker 598:rodding 522:Room 40 476:papyrus 464:Herodas 452:atheist 422:Herodas 318:of the 293:Room 40 199:​ 191:​ 148:Room 40 104:British 84:Wycombe 1977:  1956:  1935:  1911:15 May 1889:  1848:  1829:  1802:  1771:  1718:  1687:  1661:  1623: 1588:  1520:Carter 1453:  1432:Goebel 1402:  958:Abwehr 948:Abwehr 942:Abwehr 925:Allied 892:Abwehr 763:Enigma 741:Enigma 737:Poland 733:Warsaw 711:class. 668:French 586:Vienna 351:Abwehr 343:Abwehr 324:Allies 287:and a 213:Parent 182:Spouse 1742:(PDF) 1735:(PDF) 1033:Notes 977:Death 971:D-Day 851:bomba 847:bombe 804:Derby 683:Asché 594:cribs 355:D-Day 265:Dilly 193:( 189: 162:Title 95:Dilly 2006:2015 1975:ISBN 1954:ISBN 1933:ISBN 1913:2020 1887:ISBN 1871:2015 1846:ISBN 1827:ISBN 1800:ISBN 1769:ISBN 1750:2015 1716:ISBN 1685:ISBN 1659:ISBN 1586:ISBN 1464:2022 1451:ISBN 1400:ISBN 1346:2012 1311:link 757:and 729:Pyry 701:and 580:The 536:the 527:ID25 432:and 320:Axis 269:Knox 73:Died 47:Born 1615:doi 991:CMG 872:ed 785:). 329:At 283:at 273:CMG 40:CMG 2044:: 2016:. 1992:, 1903:, 1862:. 1539:^ 1486:^ 1472:^ 1413:^ 1390:; 1319:^ 1307:}} 1303:{{ 1295:. 1223:, 1196:^ 1180:^ 1157:^ 1131:^ 1091:^ 1077:^ 973:. 919:, 904:. 853:. 746:. 735:, 529:. 454:. 401:. 385:, 381:, 357:. 326:. 271:, 267:" 195:m. 2020:. 1983:. 1873:. 1835:. 1808:. 1777:. 1693:. 1667:. 1621:. 1617:: 1594:. 1466:. 1348:. 1313:) 1062:" 1060:' 263:" 208:2 59:) 55:( 20:)

Index

Dillwyn Knox
CMG
Headington
Wycombe
British
King's College, Cambridge
Codebreaker
Papyrologist
Room 40
GC&CS
Order of St Michael and St George
Edmund Arbuthnott Knox
E. V. Knox
Wilfred Knox
Ronald Knox
Winifred Peck
Penelope Fitzgerald
CMG
classics
papyrologist
King's College, Cambridge
codebreaker
Room 40
Zimmermann Telegram
First World War
Government Code and Cypher School
Second World War
Polish cryptanalysis
Axis
Allies

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