The Battle of Rastatt (5 July 1796) saw part of a Republican French army under Jean Victor Marie Moreau clash with elements of the Habsburg army under Maximilian Anton Karl, Count Baillet de Latour which were defending the line of the Murg River. Leading a wing of Moreau's army, Louis Desaix attacked the Austrians and drove them back to the Alb River in the War of the First Coalition action. Rastatt is a city in the state of Baden-Württemberg in Germany, located south of Mannheim and west of Stuttgart.
In the Rhine Campaign of 1796, Moreau's army made a successful assault crossing of the Rhine River at Kehl on 24 June. Moreau expanded his bridgehead, sending Desaix north, Laurent Gouvion Saint-Cyr east and Pierre Marie Barthélemy Ferino south. The French won a clash over Anton Sztáray at Renchen on the 28th before moving against Latour at Rastatt. Soon afterward, Archduke Charles, Duke of Teschen joined Latour with reinforcements from the north. The Battle of Ettlingen on 9 July determined whether Moreau would continue his invasion of Germany.
Background
The Rhine Campaign of 1795 (April 1795 to January 1796) opened when two Habsburg armies under the overall command of François Sébastien Charles Joseph de Croix, Count of Clerfayt defeated an attempt by two Republican French armies to cross the Rhine River and capture the Fortress of Mainz. At the start of the campaign the French Army of the Sambre and Meuse led by Jean-Baptiste Jourdan confronted Clerfayt's Army of the Lower Rhine in the north, while the French Army of Rhine and Moselle under Pichegru lay opposite Dagobert Sigmund von Wurmser's army in the south. In August, Jourdan crossed and quickly seized Düsseldorf. The Army of the Sambre and Meuse advanced south to the Main River, completely isolating Mainz. Pichegru's army made a surprise capture of Mannheim so that both French armies held significant footholds on the east bank of the Rhine. The French fumbled away the promising start to their offensive. Pichegru bungled at least one opportunity to seize Clerfayt's supply base in the Battle of Handschuhsheim. With Pichegru unexpectedly inactive, Clerfayt massed against Jourdan, beat him at Höchst in October and forced most of the Army of the Sambre and Meuse to retreat to the west bank of the Rhine. About the same time, Wurmser sealed off the French bridgehead at Mannheim. With Jourdan temporarily out of the picture, the Austrians defeated the left wing of the Army of Rhine and Moselle at the Battle of Mainz and moved down the west bank. In November, Clerfayt gave Pichegru a drubbing at Pfeddersheim and successfully wrapped up the Siege of Mannheim. In January 1796, Clerfayt concluded an armistice with the French, allowing the Austrians to retain large portions of the west bank. During the campaign Pichegru had entered into negotiations with French Royalists. It is debatable whether Pichegru's treason or bad generalship was the actual cause of the French failure. which lasted until 20 May 1796, when the Austrians announced that it would end on 31 May. This set the stage for continued action during the campaign months of May through October 1796.
Terrain
The Rhine River flows west along the border between the German states and the Swiss Cantons. The stretch between Rheinfall, by Schaffhausen and Basel, the High Rhine cuts through steep hillsides over a gravel bed; in such places as the former rapids at Laufenburg, it moved in torrents. A few miles north and east of Basel, the terrain flattens. The Rhine makes a wide, northerly turn, in what is called the Rhine knee, and enters the so-called Rhine ditch (Rheingraben), part of a rift valley bordered by the Black Forest on the east and Vosges Mountains on the west. In 1796, the plain on both sides of the river, some wide, was dotted with villages and farms. At both far edges of the flood plain, especially on the eastern side, the old mountains created dark shadows on the horizon. Tributaries cut through the hilly terrain of the Black Forest, creating deep defiles in the mountains. The tributaries then wind in rivulets through the flood plain to the river.