Kennedy escaped capture in the Pacific because the Japanese failed to solve a simple cipher. No part of this book may be reproduced or transmitted in any form or by any means , electronic or mechanical , including photocopying, recording or by any information storage and retrieval system, without permission in writing from the publisher. One Day of Magic : I 2.
One Day of Magic: II 3. The First 3, Years 4. The Rise of the West 5. On the Origin of a Species 6. The Era of the Black Chambers 7. The Contribution of the Dilettantes 8. Room 40 9. A War of Intercepts Two Americans Secrecy for Sale Duel in the Ether: I Duel in the Ether: II Censors, Scramblers, and Spies The Scrutable Orientals Heterogeneous Impulses Ciphers in the Past Tense Here it is. It comprises about a third of the original. This was as big as the publishers and I could make it and still keep the price within reason.
In cutting the book, I retained mainly stories about how codebreaking has affected history, particularly in World War II, and major names and stages in the history of cryptology. I eliminated all source notes and most of the technical matter , as well as material peripheral to strict codebreaking such as biographies, the invention of secondary cipher systems, and miscellaneous uses of various systems.
I had no space for new material, but I did correct the errors reported to me and updated a few items. The chapters have been slightly rearranged. Readers wanting to know more about a specific point should consult the text and notes of the original.
If any reader wishes to offer any corrections or to tell me of his own experiences in this field , I would be very grateful if he would send them to me. It produces much more and much more trustworthy information than spies, and this intelligence exerts great influence upon the policies of governments. Yet it has never had a chronicler. It badly needs one. It has been estimated that cryptanalysis saved a year of war in the Pacific, yet the histories give it but passing mention.
