At the Battle of Verona on 26 April 1799, the "d'Aspré" Jäger Corps of 10 companies was assigned to the brigade of Anton von Elsnitz in Konrad Valentin von Kaim's division. The Jäger Corps also fought at the Battle of Magnano on 6 April. D'Aspré was promoted General-major on 6 February 1800. He served under Peter Karl Ott von Bátorkéz in the operations leading up to the Siege of Genoa. Like other émigré officers, D'Aspré had an aggressive outlook. In one action, his fellow general Friedrich Heinrich von Gottesheim chided him for being so impatient. Gottesheim asked what good could be done by cavalry across the rough ground between them and the French and d'Aspré replied, "Beat them". On 7 April 1800, Nicolas Soult and 5,000 French soldiers launched a surprise attack on Monte Fascio. The French assault mauled Ott's division, forcing the 2nd Battalion of the "Archduke Joseph" Infantry Regiment Nr. 63 to surrender. For a loss of only 200 killed and wounded, Soult's men inflicted losses of 54 killed, 178 wounded, and 1,400 captured on the Austrians. D'Aspré was made a prisoner during the encounter.