Dee ihe na-aga n'ihu maka paragraf a - Amụrụ n'ezinụlọ aristocratic nke Ancien Régime, a nabatara Desvaux n'ụlọ akwụkwọ Artillery nke Châlons na 1792, tupu ya esonye ndị agha nke Alps, nke ọ ga-esonye na nnọchibido nke Lyon. O jere ozi n'okpuru iwu nke ọchịagha Jacques François Dugommier na ndị agha nke Oriental-Pyrenees, tupu a họpụta ya onye enyemaka nke ọchịagha Saint-Rémy na Jenụwarị 1796 wee ziga ya Italytali. Ọ ga-esonye n'ọtụtụ agha agha n'etiti 1798 <unk> 1799, nke kachasị ama na Novi na Mincio
Ọ dị mma. Ọ ghọrọ aide-de-camp nye onye isi Auguste de Marmont ma bulie ya n'ọkwa nke onye isi ndị agha na 1803, na-esonye na nnọchibido nke Ulm, ebe ọ merụrụ ahụ, tupu onye iro ejide ya n'agha nke Judenburg. A tọhapụrụ ya mgbe Nkwekọrịta nke Pressburg na njedebe nke 1805, ọ nọrọ afọ na-esote na-eje ozi dị ka ọchịagha nke ndị agha French na Dalmatia na Friuli. N'afọ 1809, o sonyere na Agha nke Ise nke Coalition ma bulie ya n'ọkwa brigadier general; mgbe njedebe nke mkpọsa ahụ na Austria, e nyere ya iwu nke ụsụụ ndị agha ịnyịnya nke ndị nche Imperial. Baron nke Alaeze Ukwu site na 1810, Desvaux nwere iwu ya na ndị nche ma bụrụ akụkụ nke Grande Armée n'oge Mgbasa Ozi Russia na mgbe ahụ Agha nke isii. E buliri ya n'ọkwa nke onye isi na November 1813 na 1814, n'oge Mgbasa France, e nyere ya iwu nke ndị agha nke ndị agha nke Lyon, n'okpuru Marshal Pierre Augereau. N'oge otu narị ụbọchị ahụ, Desvaux sonyeere Napoleon ma nye ya iwu nke ndị agha na-eche nche. E gburu ya n'ọgụ a lụrụ na Waterloo. E dere aha ya n'okpuru Arc de Triomphe, nke dị n'Ogidi Ugwu.