The Ulm Campaign in October 1805 was catastrophic for Austria, with only the corps of Michael von Kienmayer and Franz Jellacic escaping envelopment and capture by the Grande Armée of Napoleon. While Kienmayer's troops withdrew east toward Vienna, the only escape route open to Jellacic was to the south. As some of Napoleon's corps moved south into the Alps and the Austrian army of Archduke Charles, Duke of Teschen withdrew from Italy, Jellacic's force was cut off from the rest of Austria. In a remarkable trek, his cavalry set off for Bohemia and evaded capture. However, Augereau's late-arriving corps moved into the Vorarlberg and, after a number of clashes, trapped Jellacic's infantry at Dornbirn. The French VII Corps under Marshal Pierre Augereau faced an Austrian force led by Franz Jellacic. Isolated near Lake Constance (Bodensee) by superior numbers of French troops, Jellacic surrendered his command.