In the Battle of Abensberg on 20 April 1809, the corps fell upon the brigades of Ludwig Thierry and Joseph, Baron von Mesko de Felsö-Kubiny near Rohr in Niederbayern.

After initial resistance, the outnumbered and outgeneraled Austrians were soon fleeing down the road to Rottenburg an der Laaber with the cuirassiers slashing at the fugitives.

[5] Nansouty's division, less Antoine Louis Decrest de Saint-Germain's brigade,[6] began pressing back Karl von Vincent's rear guard early on 21 April 1809.

[7] After a pause at mid-day, the French horsemen finally advanced and routed Vincent's cavalry which fled across the bridges of Landshut.

The enemy cavalry force countercharged but was beaten and the armored French horsemen overran the hilltop, capturing two batteries of Austrian 12-pounder cannons.

Napoleon threw Nansouty's division at Johann Kollowrat's Austrian III Armeekorps in attempt to stop his enemies.

Staring at defeat, the Russian commander Peter Wittgenstein threw in his last reserves, headed by depot squadrons of the Lifeguard Uhlans, Hussars, and Dragoons.

[25] On the 26th, Oudinot and 11,000 troops, among them the 3rd Heavy, crossed to the west bank of the Berezina River and prepared to defend the two improvised bridges against a Russian attack.

The next day, Pavel Chichagov belatedly realized that Napoleon had tricked him out of position and began attacking the French foothold from the south.

Doumerc led his heavies in a "brilliant charge" that broke the back of Chichagov's effort and inflicted 2,000 casualties on the Russians.

[29] Directed by Marshal Joachim Murat, the French cavalry fell upon the Allied left wing, which was isolated from the center and right by a rain-flooded stream.

Unable to effectively defend itself because of wet powder, Ignaz Gyulai's Austrian corps was severely mauled by the rampaging French horsemen, backed by infantry and artillery.

[31] At the Battle of Leipzig on 16 October 1813, Napoleon made a bid to crush Karl Philipp, Prince of Schwarzenberg's Army of Bohemia.

The charge quickly dispersed two infantry battalions, overran 26 guns, and nearly cut its way to Czar Alexander I of Russia's headquarters.

However, before either Murat or Doumerc could bring up support, Bordesoulle was counterattacked by the Czar's escort and a large force of Russian cuirassiers.

The decisive moment passed and the day's battle ended with the Allies driven back to their start line but intact.

At the Battle of Hanau, the French emperor completely outgeneraled the Bavarian Karl Philipp von Wrede, crushing his left flank with a powerful attack and carving an escape route for his troops.

[34] At the Battle of La Rothiere on 1 February 1814, Doumerc led a 1,900-strong light cavalry division in Marshal Auguste Marmont's corps.

The king made him inspector general of three military districts, a Chevalier of the Order of Saint Louis, and a Grand Officer of the Légion d'honneur.