When the
Belgian Revolution of 1830 began in
Namur the Dutch troops held the citadel while the city was held by the Belgian patriots. Prisse was given command of the civil guard in the city, and was a signatory to the agreement by which the citadel surrendered. He offered his service to the provisional government in Brussels, and on 22 October 1830 was appointed lieutenant colonel in the new Belgian army. On 14 February 1831 he was appointed a colonel on the staff of King
Leopold I of Belgium. He accompanied the king in the
Ten Days' Campaign of August 1831 in which the Dutch army entered Belgium and defeated the Belgian army in several encounters, but eventually withdrew in face of a French force. After the August events Prisse was appointed adjutant to the king, and soon after also became Deputy Chief of the General Staff, in which role he was active in the reorganization of the army. He also had to deal with disturbances in the western part of
Luxembourg that began in December 1832, where he was sent to restore order with four infantry battalions. He arrested 30 individuals and imprisoned them to wait trial in Namur, then returned to Brussels. However, there were renewed disturbances in April 1832. Prisse helped negotiate a treaty with Luxembourg later that year. He received some criticism for ceding too much. He assisted in foundation of the Military School. On 6 January 1834 Prisse was sent to
Province of Antwerp as acting commander of the division guarding
Antwerp and the banks of the
Scheldt. He was appointed general on 12 April 1834 and given full command of the troops of Antwerp and the Scheldt, which he held until 1837. He then returned to the position of deputy chief of the General Staff until 22 June 1839, when he was made president of the commission to demarcate the borders between Belgium and the Netherlands, and between Belgium and Luxembourg. This work was almost complete when he was made Envoy Extraordinary and Minister Plenipotentiary to the Court of The Hague on 12 July 1842, a post he held for three years. He completed various successful negotiations during this period. On 15 May 1844 he was granted the hereditary title of Baron. On 12 July 1845 Prisse was promoted to lieutenant general. Prisse was again aide to the king until 1 March 1846, when he was made Minister of War in the cabinet headed by Count
Barthélémy de Theux de Meylandt, holding office for 18 months. After leaving the ministry Prisse was made military governor of the royal residence and commander of the 2nd Territorial Division from 1847 to 1850. He was Adjutant General and head of the military house of the King of Belgium from 1850 to 1852, and then head of the military house of the Duke of Brabant. He retired in 1854, and was appointed Minister of State by the king. He died during a winter vacation on 22 November 1856 in Rome, aged 68. == Honours ==