Jacob François Marulaz or Marola, born 6 November 1769, died 10 June 1842, joined the Army of the Kingdom of France as a cavalry trooper and rose to become a field officer during the French Revolutionary Wars.

Born on 6 November 1769 in Zeiskam in territory then belonging to the bishop of Speyer (in modern-day Germany), Marulaz enlisted in the French army's Esterhazy Hussar Regiment in 1784.

[1] Marulaz received promotion to Chef de brigade (colonel) of the 8th Hussars on 28 December 1798 in time for the War of the Second Coalition.

[1] At the start of Jean Moreau's 1800 campaign, the 8th Hussars belonged to Dominique Vandamme's division of Claude Lecourbe's corps.

[4] During the Battle of Hohenlinden campaign that fall, the 8th Hussars were assigned to Charles Gudin's division[5] and fought at Salzburg on 14 December 1800.

[7] At the Battle of Eylau on 8 February 1807, he led Marshal Louis Davout's III Corps cavalry brigade.

[10] Late in the afternoon, his cavalry were attacked by the late-arriving Prussians near the village of Kutschitten and driven back along with the rest of Davout's troops.

[12] Still a general of brigade, Marulaz found himself leading Marshal André Masséna's IV Corps cavalry division at the outset of the War of the Fifth Coalition.

Marulaz's cavalry quickly crossed to the east bank and turned northeast toward Landshut where Johann von Hiller's Austrians were making a stand.

[16] Marulaz marched rapidly down the east bank of the Isar until he found his way blocked by Austrian infantry defending the southwest suburbs of Landshut.

Soon Louis Jacques de Coehorn's infantry brigade arrived and Marulaz asked him to clear away the Austrian foot soldiers.

Marulaz, leading the 3rd and 19th Chasseurs and an infantry battalion, collided with the Austrians at Erharting village, just north of Mühldorf.

[21] Near the villages of Kallham and Riedau on 1 May 1809, Marulaz's Baden Dragoons scored a splendid success when they broke an Austrian infantry square.

The French foot soldiers soon flushed the Austrians from the houses and there was a stampede of troops dashing for the bridge with Marulaz's horsemen hacking at the fugitives.

[24] Before the battle was over, the French lost at least 4,000 men and the Austrians 4,495, and numbers of wounded soldiers were burnt to death when the town caught fire.

[26] During the first day, the French infantry held the two villages on the flanks while cavalry divisions under Marulaz, Antoine Lasalle, and Jean-Louis-Brigitte d'Espagne defended the center.

At 4:00 pm, Napoleon ordered Marulaz to attack Austrian infantry near Aspern while the other two divisions charged the enemy cavalry.

[27] Marulaz charged no less than 17,000 infantry and 50 cannons belonging to Prince Friedrich Franz Xaver of Hohenzollern-Hechingen's column.

[29] On the second day, Marulaz and Lasalle charged no less than three times in assisting the attack of Marshal Jean Lannes in the center.

While the infantry overran the Austrian riverbank defenses, the cavalry helped clear away some stray enemy units.

[33] At 2:00 am on 6 July, Masséna shifted his corps toward the center, leaving only Jean Boudet's infantry division holding the left flank.

[34] That morning Archduke Charles launched a dangerous attack on the French left flank and succeeded in defeating Boudet's troops.

Marulaz made several charges to help Boudet's troops, then he managed to surprise and overrun an Austrian artillery battery.

He held a number of positions under King Louis XVIII of France but during the Hundred Days, he switched his allegiance to Napoleon.