The magnificent, unrivaled history of codes and ciphers -- how they're made, how they're broken, and the many and fascinating roles they've played since the dawn of civilization in war, business, diplomacy, and espionage -- updated with a new chapter on computer cryptography and the Ultra secret.Man has created codes to keep secrets and has broken codes to learn those secrets since the time of the Pharaohs. For 4,000 years, fierce battles have been waged between co...

"An absorbing and thoroughly well documented account" of WWII naval intelligence and the Allied hunt for the Nazi code machine known as the Enigma ( Warship).From the start of World War II to mid-1943, British and American naval forces fought a desperate battle against German submarine wolfpacks. And the Allies might have lost the struggle at sea without an astounding intelligence coup. Here, the author brings to life the race to break the German U-boat co...

For almost four desperate years between 1939 and 1943, British and American navies fought a savage, losing battle against German submarine wolf packs. The Allies might never have turned the tide of that historic battle without an intelligence coup. The race to break the German U-boat codes is one of the last great untold stories of World War II.David Kahn, the world’s leading historian of cryptology, brings to life this tense, behind-the-scenes drama for the first time. Seizing...

This book recounts the desperate efforts to gather information during World War II and the Cold War. The author provides insight into the dark realm of intelligence and code that will fascinate cryptographers, intelligence personnel, and the millions of people interested in military history, espionage adventure, and world affairs. David Kahn is universally regarded as the dean of intelligence historians. Authoritative and addictively readable, this book, by revealing the past, helps guide ...

BECAUSE NOT ALL KRAV MAGA IS THE SAME TMIsraeli krav maga is the official self-defense system of the Israel Defense Forces. Krav maga training shares the same principles for civilians, law enforcement, and military personnel alike to deliver them from harm's way. Goals however, are different for law enforcement and military personnel.This book is designed for security-conscious civilians, law enforcement officers, military personnel, and security profession...

BECAUSE NOT ALL KRAV MAGA IS THE SAME®This book is designed for krav maga trainees, security-conscious civilians, law enforcement officers, security professionals, and military personnel alike who wish to refine their essential krav maga combatives, improve their chances of surviving a hostile attack and prevail without serious injury.Combatives are the foundation of krav maga counter-attacks. These are the combatives of the original Israeli Krav Maga Association (Grandmast...

Israeli Krav Maga is the Israel Defense Force's official self-defense system. The system is simple, instinctive, adaptable, and if necessary, brutally effective to thwart a life threatening assault. This book presents the most up-to-date and effective techniques to prevail against armed threats and attacks.Many of these updated defenses have never been seen before. Grandmaster Haim Gidon has improved and evolved this material with the late krav maga founder Imi Lichtenfeld's formal...

BECAUSE NOT ALL KRAV MAGA IS THE SAME®This book introduces and codifies big-picture thinking to take you to the next level of self-defense expertise. The material is designed to conform to your strengths; you need not conform to the system.In this latest volume from David Kahn, you will find practical, battle-tested stratagems and insights that are equally applicable across the spectrum of martial arts and fighting systems. The text is supported by 180 dyna...

Concise and highly focused, this volume offers everything high school and beginning college students need to know to handle problems in probability and statistics. Numerous rigorously tested examples and coherent, to-the-point explanations are presented in an easy-to-follow format.The treatment is organized in a way that permits readers to advance sequentially or skip around between chapters. An essential companion volume to the author's Attacking Trigonometry Problems and ...

This original volume offers a concise, highly focused review of what high school and beginning college students need to know in order to solve problems in logarithms and exponential functions. Numerous rigorously tested examples and coherent to-the-point explanations, presented in an easy-to-follow format, provide valuable tools for conquering this challenging subject.The treatment is organized in a way that permits readers to advance sequentially or skip around between chapters. An...

This volume offers a concise, highly focused review of what high school and beginning college undergraduates need to know to successfully solve the trigonometry problems they will encounter on exams. Rigorously tested examples and coherent, to-the-point explanations are presented in an accessible form and will provide valuable assistance in conquering this challenging subject.Rather than serving as a text or treatise, the book focuses on the essentials of trigonometry. All fourteen ...

The odds of having conscious awareness in this moment are trillions to one, and yet here you are. Centuries of complicated religious dogma and scientific rationalizations cannot explain why your consciousness is functioning in this moment. Perhaps the reason is quite simple, even obvious, with the evidence showing up everywhere in plain sight.