Late in AD 937， four armies met in a place called Brunanburh。 On one side stood the shield-wall of the expanding kingdom of the Anglo-Saxons。 On the other side stood a remarkable alliance of rival kings – at least two from across the sea – who'd come together to destroy them once and for all。 The stakes were no less than the survival of the dream that would become England。 The armies were massive。 The violence， when it began， was enough to shock a violent age。 Brunanburh may not today have the fame of Hastings， Crécy or Agincourt， but those later battles， fought for England， would not exist were it not for the blood spilled this day。 Generations later it was still called， quite simply， the 'great battle'。 But for centuries， its location has been lost。 Today， an extraordinary effort， uniting enthusiasts， historians， archaeologists， linguists， and other researchers – amateurs and professionals， experienced and inexperienced alike – may well have found the site of the long-lost battle of Brunanburh， over a thousand years after its bloodied fields witnessed history。 This groundbreaking new book tells the story of this remarkable discovery and delves into why and how the battle happened。 Most importantly， though， it is about the men who fought and died at Brunanburh， and how much this forgotten struggle can tell us about who we are and how we relate to our past。