Napoleon III's defeat brought an end to the French military protection for Pope Pius IX and on September 20 Italian troops breached Rome's walls at Porta Pia and entered the city.
Kekalahan Napoleon III mengakhiri perlindungan militer Prancis terhadap Paus Pius IX dan pada tanggal 20 September, pasukan Italia menerobos tembok Roma di Porta Pia dan memasuki kota.