Late 1930s. When World War II was declared, Mavis Batey, previously studying German Romanticism, abandoned her studies to do her duty for her country. At Bletchley Park, Britain’s best kept secret, she became one of the first women codebreakers, a pioneer and a star, breaking codes vital to bringing peace. Mavis Batey, a unique biography, delves into the life of one of Britain’s best female codebreakers, taking the reader through the war and to the arrival of peace, when Mavis turned her attention from breaking codes to the conservation and preservation of gardens. Mavis became an important figure in conservation, becoming President of the Garden History Society, which, under her watch, became an academic society and campaigning force for the protection of landscapes, parks, and gardens of historic interest. She also lobbied Parliament, fighting threats of encroachment and misuse of land. Acts of Parliament were passed, English Heritage was established, and grants were introduced. Historic gardens became officially recognised as essential components of European culture and her National Register of Historic Gardens came to fruition. Mavis’s passion was writing and she wrote many books. Mavis was finally awarded the RHS Veitch Memorial Medal and the MBE for Services to the preservation and conservation of historic landscapes. Mavis never did retire: her final project was to inspire an American Garden Trail for Bletchley Park which she signed off just a few months before her death in November 2013.

A celebration of the women who furthered computer technology, from the nineteenth century to the present day.

One of the most significant occurrences in the history of design was the creation of the English Landscape Garden. Accounts of its genesis...the surprising structural change from the formal to a seeming informal are numerous. But none has ever been quite convincing and none satisfactorily placed the contributions of Stephen Switzer. Unlike his contemporaries, Switzer - an 18th century author of books on gardening and agricultural improvement - grasped a quite new principle: that the fashionable pursuit of great gardens should be "rural and extensive", rather than merely the ornamentation of a particular part of an estate. Switzer saw that a whole estate could be enjoyed as an aesthetic experience, and by the process of improving its value, could increase wealth. By encouraging improvers to see the garden in his enlarged sense, he opened up the adjoining countryside, the landscape, and made the whole a subject of unified design. Some few followed his advice immediately, such as Bathurst at Cirencester. But it took some time for his ideas to become generally accepted. Could this vision, and its working out in practice between 1710 and 1740 be the very reason for such changes? 300 years after the first volume of his writings began to be published; this book offers a timely critical examination of lessons learned and Switzer’s roles. In major influential early works at Castle Howard and Blenheim, and later the more "minor" works such as Spy Park, Leeswood or Rhual, the relationships between these designs and his writings is demonstrated. In doing so, it makes possible major reassessment of the developments, and thus our attitudes to well-known works. It provides an explanation of how he, and his colleagues and contemporaries first made what he had called Ichnographia Rustica, or more familiarly Modern Gardening from the mid-1740s, land later landscape gardens. It reveals an exceptional innovator, who by transforming the philosophical way in which nature was viewed, integrated good design with good farming and horticultural practice for the first time. It raises the issue of the cleavage in thought of the later 18th century, essentially whether the ferme ornee as the mixture of utile and dulci was the perfect designed landscape, or whether this was the enlarged garden with features of "unadorned nature"? The book discusses these considerable and continuing contrary influences on later work, and suggests Switzer has many lessons for how contemporary landscape and garden design ought be perceived and practised.

Closely examining the work of women in the US and British naval services towards Allied naval intelligence during the Second World War, this book focuses on their contributions during the Battle of the Atlantic and Pacific Naval War, in order to shed new light on arenas of war from which women's narratives are almost always absent. Including personal testimonies from those involved, and surveying a wide cross-section of different roles, Sarah-Louise Miller analyses the work of women at every level and rank in the US and British naval services, and offers a much wider picture of how they assisted the Allied forces behind closed doors. With exploration of the work of the WRNS and WAVES on developing naval intelligence, this book argues that they played a crucial role in the British and American SIGINT systems, and within programs such as those at Bletchley Park and OP-20-G – therefore directly impacting the organisation and outcome of Anglo-American naval efforts. Including analysis of the development of the modern 'kill-chain', Miller also re-evaluates the effect of the 'combat taboo', to demonstrate that the WRNS and WAVES were in fact at the cutting edge of the emergence of modern warfare.

The complete story of how the German Enigma codes were broken. Perfect for fans of THE IMITATION GAME, the new film on Alan Turing's Enigma code, starring Benedict Cumberbatch. Breaking the German Enigma codes was not only about brilliant mathematicians and professors at Bletchley Park. There is another aspect of the story which it is only now possible to tell. It takes in the exploits of spies, naval officers and ordinary British seamen who risked, and in some cases lost, their lives snatching the vital Enigma codebooks from under the noses of Nazi officials and from sinking German ships and submarines. This book tells the whole Enigma story: its original invention and use by German forces and how it was the Poles who first cracked - and passed on to the British - the key to the German airforce Enigma. The more complicated German Navy Enigma appeared to them to be unbreakable.

Imagine a Britain where the most important sites of historical significance are replaced with housing estates and supermarkets... Imagine a Britain without Bletchley Park, where Alan Turing and a team of code breakers changed the course of World War II and where thousands of women inspired future generations with their work in the fields of computing and technology... Now imagine a group of extraordinary people, who – seventy years after the birth of the modern computer at Bletchley Park – used technology to spark a social media campaign that helped secure its future and transform it into the world-class heritage and education centre it deserves to be. This is a story about saving Bletchley Park. But it is also the story of the hundreds of people who dedicated twenty years of hard work and determination to the campaign that saved it. It is a testament to the remarkable and mysterious work during World War II that made it a place worth saving. It is a book about campaigners, veterans, enthusiasts, computer geeks, technology, Twitter, trees and Stephen Fry stuck in a lift. And finally, it is a story about preserving the past for the generations of tomorrow.

The highly eccentric Alfred Dillwyn Knox, known simply as 'Dilly', was one of the leading figures in the British codebreaking successes of the two world wars. During the first, he was the chief codebreaker in the Admiralty, breaking the German Navy's main flag code, before going on to crack the German Enigma ciphers during the Second World War at Bletchley Park. Here, he enjoyed the triumphant culmination of his life's work: a reconstruction of the Enigma machine used by the Abwehr, the German Secret Service. This kept the British fully aware of what the German commanders knew about Allied plans, allowing MI5 and MI6 to use captured German spies to feed false information back to the Nazi spymasters. Mavis Batey was one of 'Dilly's girls', the young female codebreakers who helped him to break the various Enigma ciphers. She was called upon to advise Kate Winslet, star of the film Enigma, on what it was like to be one of the few female codebreakers at Bletchley Park. This gripping new edition of Batey's critically acclaimed book reveals the vital part Dilly played in the deception operation that ensured the success of the D-Day landings, altering the course of the Second World War.

'A joyous and celebratory tribute to all those who battled to be heard, who fought for their achievements to be recognised and honoured, who simply kept going' Kate Mosse The tried and tested 'On This Day in History' format has elevated the stories of many people and their impact on the wider world. However, of those considered noteworthy by the Establishment, just a fraction are women. But this is not the whole story - not by half. Our past is full of influential women, many of whom have been unfairly confined to the margins of history. Politicians, troublemakers, explorers, artists, writers, scientists and even the odd murderer; these women have shaped society around the globe. From Beyoncé to Doria Shafik, Queen Elizabeth I to Lillian Bilocca, On This Day She sets out to redress this imbalance and give voice to both those already deemed female icons, alongside others whom the history books have failed to include: the good, the bad and everything in between - this is a record of human existence at its most authentic.

This accessible textbook presents a fascinating review of cryptography and cryptanalysis across history. The text relates the earliest use of the monoalphabetic cipher in the ancient world, the development of the “unbreakable” Vigenère cipher, and an account of how cryptology entered the arsenal of military intelligence during the American Revolutionary War. Moving on to the American Civil War, the book explains how the Union solved the Vigenère ciphers used by the Confederates, before investigating the development of cipher machines throughout World War I and II. This is then followed by an exploration of cryptology in the computer age, from public-key cryptography and web security, to criminal cyber-attacks and cyber-warfare. Looking to the future, the role of cryptography in the Internet of Things is also discussed, along with the potential impact of quantum computing. Topics and features: presents a history of cryptology from ancient Rome to the present day, with a focus on cryptology in the 20th and 21st centuries; reviews the different types of cryptographic algorithms used to create secret messages, and the various methods for breaking such secret messages; provides engaging examples throughout the book illustrating the use of cryptographic algorithms in different historical periods; describes the notable contributions to cryptology of Herbert Yardley, William and Elizebeth Smith Friedman, Lester Hill, Agnes Meyer Driscoll, and Claude Shannon; concludes with a review of tantalizing unsolved mysteries in cryptology, such as the Voynich Manuscript, the Beale Ciphers, and the Kryptos sculpture. This engaging work is ideal as both a primary text for courses on the history of cryptology, and as a supplementary text for advanced undergraduate courses on computer security. No prior background in mathematics is assumed, beyond what would be encountered in an introductory course on discrete mathematics.

A groundbreaking history of women in British intelligence, revealing their pivotal role across the first half of the twentieth century From the twentieth century onward, women took on an extraordinary range of roles in intelligence, defying the conventions of their time. Across both world wars, far from being a small part of covert operations, women ran spy networks and escape lines, parachuted behind enemy lines, and interrogated prisoners. And, back in Bletchley and Whitehall, women's vital administrative work in MI offices kept the British war engine running. In this major, panoramic history, Helen Fry looks at the rich and varied work women undertook as civilians and in uniform. From spies in the Belgian network "La Dame Blanche," knitting coded messages into jumpers, to those who interpreted aerial images and even ran entire sections, Fry shows just how crucial women were in the intelligence mission. Filled with hitherto unknown stories, Women in Intelligence places new research on record for the first time and showcases the inspirational contributions of these remarkable women.