His own military genius blossomed during the
Napoleonic Wars. During the
War of the Third Coalition, Yermolov served in the rear and advance guards and distinguished himself at
Amstetten and
Austerlitz. For his actions, he was promoted to
colonel on 16 July 1806. The following year, he participated in the campaign in Poland, serving in
Prince Bagration's
advance guard. He distinguished himself commanding an artillery company in numerous
rearguard actions during the retreat to
Landsberg as well as in the
Battle of Eylau. In June 1807, Yermolov commanded horse artillery company in the actions at
Guttstadt and Deppen,
Heilsberg and
Friedland, being awarded the
Order of St. George (3rd class, 7 September 1807). He was promoted to
major general on 28 March 1808 and was appointed inspector of horse artillery companies. In early 1809, he inspected artillery companies of the
Army of the Danube. Although his division took part in the 1809
campaign against Austria, Yermolov commanded the reserves in
Volhynia and
Podolsk gubernias, where he remained for the next two years. In 1811, he took command of the
guard artillery company and in 1812, became the
Chief of Staff of the
First Western Army. During the
1812 Campaign, Yermolov took part in the retreat to
Smolensk and played an important role in the quarrel between Generals
Barclay de Tolly and Bagration. He opposed Barclay's strategy and appealed to Emperor
Alexander I to replace him with Bagration. After the Russian armies united on 2 August, Yermolov fought at
Smolensk and
Lubino (Valutina Gora) for which he was promoted to
lieutenant general on 12 November 1812 with seniority dating from 16 August 1812. He distinguished himself at the
Battle of Borodino, where he was lightly wounded leading a counterattack that recaptured the Great
Redoubt (Raevsky redoubt). For his courage, Yermolov received the
Order of St. Anna (1st class). During the rest of the campaign, he served as a duty officer in the headquarters of the main Russian army and fought at
Maloyaroslavets. In October–November 1812, Yermolov served in the advance guard under
Miloradovich and fought at
Battle of Vyazma and
Krasny. In late November, he commanded one of the detachments in the advance guard under
General Rosen taking part in the
combats on the Berezina. On 3 December 1812, he was recalled to the main headquarters where he became the Chief of Staff of the Russian army. Three weeks later, he was appointed commander of the artillery of the Russian armies. During the European campaigns of 1813 and 1814, Yermolov was in charge of the artillery corps of the allies. His able command proved crucial to their success in the
Battle of Kulm. In 1813, Yermolov fought at
Lützen, where he was accused of insubordination and transferred to command the 2nd Guard Division. He then fought at
Bautzen, commanded the Russian rearguard, which fought against Napoleon himself
near Reichenbach during the retreat (unsuccessfully, replaced by
Eugen of Württemberg), and at Kulm where he was decorated with the
Prussian Iron Cross. In 1814, he distinguished himself in the
battle around Paris and was awarded the
Order of St. George on 7 April 1814. ==Caucasus==