How, for just over a century, Britain ensured it would not face another Napoleon Bonaparte—manipulating European powers while building a global maritime empire
 
At the conclusion of the Napoleonic Wars, a fragile peace emerged in Europe. The continent’s borders were redrawn, and the French Empire, once a significant threat to British security, was for now cut down to size. But after decades of ceaseless conflict, Britain’s economy was beset by a crippling debt. How could this small, insular seapower state secure order across the Channel?
 
Andrew Lambert argues for a dynamic new understanding of the nineteenth century, showing how British policymakers shaped a stable European system that it could balance from offshore. Through judicious deployment of naval power against continental forces, and the defence strategy of statesmen such as the Duke of Wellington, Britain ensured that no single European state could rise to pose a threat, rebuilt its economy, and established naval and trade dominance across the globe.
 
This is the remarkable story of how Britain kept a whole continent in check—until the final collapse of this delicately balanced order at the outset of World War One.

“[History] conveyed in bracing prose supported by telling quotations and superb illustrations. . . . The real lesson of Mr. Lambert’s highly instructive book is how hegemons can lose the respect of adversaries over time.”—Brendan Simms, Wall Street Journal

“In his fresh new book, Professor Lambert delivers indeed a commanding reassessment of Britain’s strategic posture in the long nineteenth century. With scholarly rigor and narrative finesse, Lambert charts the course of British foreign policy from the aftermath of Waterloo to the eve of the Great War, arguing that the island nation’s deft orchestration of European affairs forestalled the emergence of another continental hegemon in the mold of Napoleon Bonaparte."—Jean-Thomas Nicole, Cipher Brief

An Engelsberg Ideas Book of the Year 2025

“Lambert writes with the assurance of someone who knows his subject, and enjoys communicating it. [He] has reinterpreted a century of British grand strategy not as a sequence of reactionary decisions, but as a coherent, long-term strategic tradition tailored to the needs of an insular, maritime power.”—Tom Baker, Britain at War

“Lambert writes . . . penetratingly, challengingly and, above all, clear-eyed. It is as if a well-known painting that has accrued decades of grime has been cleaned and restored, so that its details and true colours are revealed once again.”—Allan Mallinson, Country Life

“This is a thought-provoking book that will rightly encourage debate. . . . Anyone with an interest in British foreign and military policy in the long 19th century will certainly want to read and engage with its arguments.”—Graham Goodland, Military History Matters

“An innovative, highly readable and thought provoking account.”—History of War

“This book quite simply must be read by all those with any form of interest in matters of strategy.”—Capt. M K Barritt and Dr James Bosbotinis, Naval Review

“With the future of NATO being questioned as never before, policymakers should read this superb book as a masterclass in the vital areas of strategic acuity, domination of the oceans, and the deployment of hard power. It was no coincidence that Britain managed to deter attack from any major power for almost a century after Waterloo, and Andrew Lambert shows how it was done by far-sighted statesmen in an era of intense Great Power rivalry.”—Andrew Roberts, author of Churchill: Walking with Destiny

“A masterful and original account of British grand strategy in the century after Waterloo, stressing the role of diplomacy and naval power, and focusing on the wars that weren’t fought as much as those that were.”—Lawrence Freedman, author of Command

Andrew Lambert is Laughton Professor of Naval History at King’s College, London, and a fellow of the Royal Historical Society. He is the author of Seapower States and The British Way of War.