Kammala jumla mai zuwa: Waɗannan sojojin, waɗanda lambobin su daga baya za su kai kimanin mutane 38,000, an sanya su a ƙarƙashin jagorancin janar Charles de Lorencez, Élie Frédéric Forey da ƙarshe François Achille Bazaine. Yaƙin ya kasance wurin da wasu daga cikin manyan yaƙe-yaƙe a tarihin sojan Faransa, kamar yaƙin da aka yi don ƙauyen
Camaron inda, a ranar 30 ga Afrilu, 1863, sojoji sittin da biyu suka yi ƙarfin hali har tsawon sa'o'i tara a kan 'yan Mexico sama da dubu biyu, wanda ya ba da damar kama garin Puebla a ranar 17 ga Mayu, 1863 don haka ya buɗe hanyar zuwa Mexico. A babban birnin, wani taron manyan mutane ya amince da Archduke Maximilian na Habsburg, ɗan'uwan Sarkin sarakuna Franz Joseph na Austria, a matsayin Sarkin Mexico.