Mezue ahịrịokwu na-esonụ: N'ịbụ onye si n'agbụrụ Burgundian, ọ bụ nwa akwụkwọ n'ụlọ akwụkwọ ndị agha Brienne, mgbe ahụ gụsịrị akwụkwọ na ụlọ akwụkwọ ndị agha Paris. Nansouty malitere ọrụ agha ya na 1785, dị ka onye isi ndị agha na regiment "Bourgogne-Infanterie", ebe nna ya jere ozi n'oge agha nke Louis XV. Onye isi ndị agha na-agba ịnyịnya na mmalite nke French Revolutionary Wars na 1792, Nansouty bụ onye e nyere ọrụ dị ka "onye inyeaka-de-camp" na Marshal Nicolas Luckner. N'oge
N'ọchịchị nke Mbụ, ọ hụrụ ọrụ dịka onye isi ndị ọchịagha na onye isi ndị agha na 9th (arọ) Cavalry Regiment, na-eme mkpọsa na ndị agha France na Rhine na Germany. E buliri ya n'ọkwa Colonel na 1793 ma nye ya iwu nke 9th Cavalry, amaara ya maka ọtụtụ ndị agha ịnyịnya nke ọma. N'ikpeazụ mere Brigadier General na 1799, mgbe ọ jụrụ nkwalite ọtụtụ oge n'oge gara aga, Nansouty lụrụ ọgụ n'afọ na-esote n'okpuru General Jean Victor Moreau na ndịda Germany, na mkpọsa mkpebi nke Njikọ nke Abụọ.