Jacques Olivier Boudon, author, history professor at the Sorbonne, takes us into the last epic of Emperor of Elba to Waterloo. The writing is fluid and enjoyable. We plunges enthusiastically into a timeline to track the period of the Hundred Days. From the flight of the Eagle in Golfe-Juan to the aftermath of Waterloo, Boudon shows how Napoleon was able to mobilize the people behind it on behalf of the principles of the Revolution and against the monarchical restoration of Louis XVIII. Unfortunately, the emperor who was able to unite the nation behind it will disappoint the people for three months during the Hundred Days he will take no social measure, already too busy preparing for one last fight against major European powers. The army of Napoleon as a single support during these three months of 1815? Yes for sure ... but the lack of time will precipitate the final fall of the imperial dream. The Emperor then left behind a weakened France territorially and militarily occupied. But still, there will always be the last gasp of the Eagle embodied the Hundred Days through the Route Napoleon and the Battle of Waterloo. To read urgently in this year of the bicentenary of the Hundred Days and Waterloo.