Kammala jumla mai zuwa: Corps na III na "Grande Armée" wani rukunin soja ne na Faransa wanda ya wanzu a lokacin Yaƙe-yaƙe na Napoleon. Corps ya zama sananne tsakanin 1805 da 1809 a ƙarƙashin jagorancin Marshal Louis-Nicolas Davout, lokacin da ya ci nasara sau da yawa da kansa ko kuma tare da sauran sojojin Faransa. Napoleon ya kira shi "My goma legion", a cikin tunani ga Julius Kaisar mafi kyau naúrar, da X Equestris. Sojoji daga III Corps sun shiga cikin fadace-fadace da yawa a Poland, a lokacin
Yaƙin Ƙungiyar ta huɗu, misali Czarnowo, Pultusk, Golymin, Eylau, a Bavaria a Teugen-Hausen da Eckmuhl, kuma a Austria a Wagram a 1809. Daga baya aka sake tsara wadannan sojojin a matsayin I Corps kuma sun hada da rukunin Faransa, Jamus, da Poland. Hakanan ya haɗa da "regiment d'infanterie de ligne" na 127 zuwa na 129 daga ƙasashen Arewacin Jamus na Oldenburg, Bremen, da Hamburg waɗanda aka haɗa su ba da daɗewa ba kuma saboda haka an ƙidaya su a matsayin Faransa.