Nekubuda kwehondo dzaNapoleon, Saint-Sulpice anopiwa basa rekutungamirira bhiriji re cuirassier muDhipatimendi rechipiri revatasvi vemabhiza raD'Hautpoul revatasvi vemabhiza reGrande Armée, raachatungamirira pakati pa 1805 na 1807. Muhondo yeEylau muna 1807 Saint-Sulpice akakuvadzwa, asi vhiki gare gare, musi wa14 Kukadzi, anokwidziridzwa kuva mukuru wechikamu uye anotora kutungamira kwe2nd heavy cavalry division, achitsiva d'Hautpoul, uyo akafa nekukuvara kwake. Akatumidzwa zita rekuti Count of the Empire muna 1808, akarwa muhondo dzakawanda dzeChishanu Chibvumirano muna 1809: Abensberg
, Eckmühl, Ratisbon, Aspern-Essling uye Wagram. Mukati mokupinda kweFrance muRussia, Saint-Sulpice anopiwa mutungamiri weboka revadzvinyiriri veVarindi. Gore rakatevera racho, muna March 1813, anonzi gavhuna weimba yeFontainebleau asi anobva adanwa kuti ashande muGrande Armée zvakare nokuda kweHondo yeChitanhatu Chibvumirano, achirwa muSaxony. Muna 1814, sezvo kurwisana kwakapfuurira, nguva ino muvhu reFrance, Saint-Sulpice anopiwa basa rokushumira pasi paMarchal weUmambo Pierre Augereau, ane mirairo yakanga iri kudzivirira Lyon kurwisa mauto eAllied anopinda. Achienda pamudyandigere, akava Peer weFrance muna 1831. Zita rake rinooneka paArc de Triomphe muParis.