At the Battle of Ostrach, he was attached to the Advanced Guard, commanded by François Joseph Lefebvre, and he was caught between the Austrian and French fire at the village of Hosskirch; his troops took heavy casualties. Unable to escape from the village without being defeated, he took advantage of a thick fog to hide his column. He maneuvered through the channel of the Ostrach and managed to join with the 2nd Division at Riedhausen. Jourdan praised him for his coolness and courage under fire in this dangerous and difficult withdrawal. Later that same year, while in the Army of the Rhine, he was at the siege of Philipsburg.