The French Army of Italy under Championnet and his
chief of staff Louis Gabriel Suchet included the infantry divisions of Duhesme, Grenier, Lemoine and Victor and the cavalry division of
Antoine Richepanse. Since Grenier was acting as left wing commander Muller led his division. Muller's 8,000-man division was made up of the 3rd, 8th and 17th Light Infantry
Demi-brigades, the 10th, 31st, 40th, 47th, 104th and 106th Line Infantry Demi-brigades and 600 sabers from the 10th Hussars. The infantry brigadiers were Claude Clément,
Jean Dominique Compans and Jean Davin while
Julien Augustin Joseph Mermet led the cavalry. Duhesme's 8000-strong division comprised the 7th and 28th Light and the 29th, 80th, 87th and 107th Line Infantry Demi-brigades and the 11th Hussars. The brigade commanders were Georges Kister, Joseph Mathurin Fidele Lesuire and Claude-François Malet. Victor's 8,469-man division counted the 2nd Battalion of the 26th Light and the 26th, 33rd, 35th, 39th, 92nd, 93rd, 99th and 105th Line Infantry Demi-brigades. The brigadiers were
Charles Louis Dieudonné Grandjean, Jean Louis Gaspard Josnet de Laviolais and Pierre Poinsot de Chansac. Lemoine's 7,829-strong division included the 5th Light and 17th Line Demi-brigades, the 34th Line under Philibert Fressinet, the 63rd Line under
Gaspard Amédée Gardanne, the 74th Line under
Bertrand Clausel and 114 detached hussars. The 20th Light under
Jean-Mathieu Seras was not engaged nor was the 30th Line. Richepanse's 1,200 troopers were from the 1st, 14th and 21st Cavalry and the 2nd, 3rd, 9th and 14th
Chasseurs à Cheval. The numbers listed above add up to 33,498 soldiers. A second source asserted that the Austrians enjoyed a numerical advantage, giving 20,000–25,000 for the French total, apparently excluding Lemoine. Two additional sources stated that only 15,000 French were engaged at Genola. The Austrian army under Melas and his chief of staff
Anton von Zach was composed of the infantry divisions of
Peter Karl Ott von Bátorkéz,
Anton Ferdinand Mittrowsky and
Anton von Elsnitz, the cavalry division of
Johann I Joseph, Prince of Liechtenstein, Gottesheim's vanguard and Hannibal Sommariva's independent brigade. Ott's 7,632-strong division was made up of brigades under Karl Philippi von Weidenfeld and Franz Xaver Johann von Auersperg. Weidenfeld's 3,404-man brigade included the Görschen,
Hohenfeld, Neny, Pers, Pértussy and Weissenwolf
Grenadier Battalions. Auersperg led 4,228 soldiers from full-strength Infantry Regiments Archduke Charles Nr. 3 and Stuart Nr. 18. Mittowsky's Division had only the 2,684-man brigade of Lelio Spannocchi, consisting of weak Infantry Regiments Reisky Nr. 13, Terzi Nr. 16 and Joseph Mittrowsky Nr. 40. Elsnitz commanded 8,010 men in the brigades of Karl von Adorján, Antoine-François-Armand Mignot de Bussy and Friedrich Joseph Anton von Bellegarde. Adorján directed 2,768 troops from Infantry Regiments ex-Kheul Nr. 10 and Alvinczi Nr. 19, Bussy led 1,467 men from Infantry Regiment Nádasdy Nr. 39 and Bellegarde had 3,775 soldiers from Infantry Regiments Gyulai Nr. 32 and Sztaray Nr. 33. Liechtenstein led 3,488 troopers in the cavalry brigades of Johann Nobili and Nikolaus Joseph Palffy von Erdöd. Nobili supervised 1,765 sabers in Light Dragoon Regiments Archduke John Nr. 3 and Karaczay Nr. 4 while Palffy directed 1,723 sabers in Light Dragoon Regiments Wurttemberg Nr. 8 and Lobkowitz Nr. 10. Gottesheim's 4,665-man vanguard included Light Dragoon Regiment Kaiser Nr. 1 and Infantry Regiments ex-Huff Nr. 8 and Prince of Orange Nr. 15, a total of 843 horse and 3,822 foot. Sommariva's 2,756-strong brigade consisted of Hussar Regiment Archduke Joseph Anton Nr. 2, Light Dragoon Regiment Levenehr Nr. 14, Light Infantry Battalion ex-Otto Nr. 7 and the 1st Battalion of
Grenz Infantry Regiment Szluiner Nr. 4, a total of 1,726 cavalry and 1,030 infantry. Franz Bögner led the artillery and
Joseph Radetzky von Radetz led the engineers for a combined total of about 1,000 gunners and pioneers. Altogether, there are 30,235 men listed above. A second source listed 29,000 Austrians. A third source credited the Austrians with 34,000 troops including 6,000 cavalry. This total counted six battalions not listed above that were under
Christoph von Lattermann. ==Battle==