The Capitulation of Dornbirn ( 13 November 1805 ) saw the French VII Corps under Marshal Pierre Augereau face Confronting_problem an Austrian force led by Franz Jellacic .

Isolated Having_or_lacking_access near Lake Constance ( Bodensee ) by superior numbers of French troops , Jellacic surrendered Surrendering his command Control .

The Ulm Campaign in October 1805 was catastrophic for Austria , with only the corps of Michael von Kienmayer and Franz Jellacic escaping Escaping envelopment Besieging and capture Conquering by the Grande Armée of Napoleon .

While Kienmayer 's troops withdrew Escaping east toward Vienna , the only escape Escaping route open Openness to Jellacic was to the south .

As some of Napoleon 's corps moved Motion south into the Alps and the Austrian army of Archduke Charles , Duke of Teschen withdrew from Italy , Jellacic 's force was cut off Removing from the rest of Austria .

However , Augereau 's late-arriving corps moved Motion into the Vorarlberg and , after a number of clashes , trapped Jellacic 's infantry at Dornbirn .

The day before Jellacic 's surrender Surrendering , the French occupied Control the Austrian capital of Vienna , but the war would not be decided Deciding until the Battle of Austerlitz was fought Quarreling on 2 December .

The 1805 war Hostile_encounter began Process_start with the Ulm Campaign Military_operation which was disastrous Catastrophe for Austria , with only the corps of Michael von Kienmayer and Franz Jellacic escaping Escaping envelopment Besieging by the Grande Armée of Napoleon .