Kammala jumla mai zuwa: Deconchy ya yi yaƙi a cikin ayyuka da yawa yayin Yaƙin Ƙungiyar ta Uku. An canja shi zuwa Spain, ya kasance mai kula da kwamandan kwamandan soja a cikin VI Corps na dan lokaci kafin a daukaka shi zuwa colonel a watan Satumba na 1810. Ya shiga cikin mamayewar Faransa na 1810 na Portugal kuma ya jagoranci rundunarsa a Redinha yayin ja da baya. An daukaka shi a matsayin babban jami'in a watan Fabrairun 1813 kuma ya yi yaƙi da 'yan tawayen Spain. A watan Agusta 1813 an tura shi zuwa Italiya inda ya jagoranci brigade a cikin sojojin Eugène de Beauharnais har zuwa karshen yakin a 1814. Ya kasance tare da Bourbons kuma an daukaka shi zuwa matsayin Lieutenant General a 1821. Ya jagoranci wani bangare a cikin
1823 Faransanci ya shiga cikin Spain kuma ya mutu a lokacin da aka kewaye Pamplona.