Text in French.“Honour and fidelity”Very early on, Switzerland set up a real mercenary business. By capitulation each canton could recruit military units on behalf of a neighboring state with their own officers and rules. The French Revolution encountered the loyalty of the Swiss in the service of the King of France. The infamous massacre of the Swiss Guard on 10 August 1792 in the Tuileries was the bloodiest. After that the Swiss regiments in the infantry of the Line were disbanded. France, reorganized Europe between 1793 and 1813, and transformed Switzerland which supplied, not always in the best conditions, its neighbor with troops of great worth to the Revolution and to the Empire. This book deals with the Swiss troops which served the Monarchy, the Republic, the Consulate, and the Empire and the Second Empire.