This book provides a full introduction to the Norman Conquest, an event which resulted in dramatic changes to the nation’s aristocracy, church and administration. It brought a new language and cultural influences and revolutionised military architecture with the introduction of the castle. This profound impact was not brought about as the result of a single battle and it took a five-year war for William to establish control over his new kingdom. The campaigns are studied in detail, with maps showing how William’s energy and strategic intelligence enabled him to defeat his formidable opponents and create a new order.