On 14 April 1471 the forces of Lancaster under the Earl of Warwick and those of York under Edward IV clashed at Barnet in Hertfordshire in one of the decisive battles of the Wars of the Roses. In a bloody encounter the two armies fought to resolve a bitter dynastic dispute that had already fuelled twenty years of war. Warwick's death and Edward's victory changed the course of English history. In this new guide to the battle, David Clark, one of the leading battlefield historians, gives a gripping account of the fighting and of the intrigue that led to it, and he provides a full tour of the battlefield itself.