Things quickly settled down until 1792, when France went to war against Prussia and Austria. During a dinner in Strasbourg organized by Mayor Frédéric de Dietrich on 25 April 1792, Claude Joseph Rouget de Lisle composed "War Song for the Army of the Rhine" (Chant de guerre pour l'Armée du Rhin), which was later renamed "La Marseillaise". The same year François Christophe Kellermann, a child of Strasbourg was appointed the head of the Mosel Army. He led his company to victory at the battle of Valmy and saved the young French republic. He was later appointed Duke of Valmy by Napoléon in 1808.