He commanded the Tyrol district from 1801 to 1805. He retained command of this district, which did not see major action, during the
War of the Third Coalition. Following the peace, von Hiller was made commander of
Salzburg and Upper Austria. When war with France broke out in 1809, von Hiller was given command of VI Armee Korps covering the left wing of the main Austrian army. When Emperor
Napoleon I of France fell on the Austrian left wing on 20 April at the
Battle of Abensberg, Hiller arrived and took command of the V, VI, and II Reserve Armeekorps. Defeated at Abensberg and on 21 April at the
Battle of Landshut, he became separated from the main army. On 22 April
Archduke Charles was beaten at the
Battle of Eckmühl and retreated to the north bank of the Danube. Not realizing he was alone on the south bank, Hiller attacked
Marshal of France Jean-Baptiste Bessières and won a minor victory in the
Battle of Neumarkt-Sankt Veit on 24 April. Finally realizing the odds against him, he retreated in good order toward
Linz from 25 April to 3 May. On the latter date he fought a savage action with
André Masséna's corps at the
Battle of Ebelsberg. This defeat forced von Hiller to withdraw across the Danube at
Mautern. In the
Battle of Aspern-Essling, von Hiller commanded the extreme right of the Austrian line. His corps fought well during the desperate two days of fighting in the town of Aspern and contributed materially to the Austrian victory. He resigned his command shortly before the
Battle of Wagram. In August 1809
Francis II of Austria appointed him
Feldzeugmeister. Following peace with France, von Hiller was made commanding general of
Croatia and, in 1811, of Slavonia and
Styria. In 1813 he commanded the
Italian theater, opposing the army of
Eugène de Beauharnais. While von Hiller was not defeated, his cautious operations failed to achieve a decisive victory, and he was replaced by
Count Heinrich von Bellegarde. ==References==