At the Battle of Amberg on 24 August and the Battle of Würzburg on 3 September, Charles defeated Jourdan's northern army and compelled the French army to retreat, eventually to the west bank of the Rhine. With Jourdan neutralized and retreating into France, Charles left Franz von Werneck to watch the Army of Sambre and Meuse, making sure it did not try to recover a foothold on the east bank of the Rhine. After securing the Rhine crossings at Bruchsal and Kehl, Charles forced Moreau to retreat south. During the winter the Austrians reduced the French bridgeheads in the sieges of Kehl and the Hüningen, and forced Moreau's army back to France. Despite Charles' success in the Rhineland, Austria lost the war in Italy, against Napoleon Bonaparte, which resulted in the Peace of Campo Formio.