The author of The Battle, Alessandro Barbero, was asked which action saved Wellington at Waterloo prior to the arrival of the Prussians. He replied: "If I should indulge in that game, I'd say the cavalry charge which effectively broke d'Erlon's attack." The greatest contributor to that charge was the King's Dragoon Guards (KDG), which fielded nearly half of the Household Brigade's sabres. This book tells the remarkable story of the KDG before, during, and after the battle of Waterloo, drawing on private, unpublished archive material. It concludes with their link to the Queen's Dragoon Guards. HRH The Prince of Wales is Colonel-in-Chief 1st Queen's Dragoon Guards.