Guerre de 1870 : la defense de Paris. La capitale est assiegee le 9/09/1870 par larmee prussienne suite a la defaite de Sedan. Planche illustree de 1870. Collection privee. La Defense de Paris; Franco-Prussian War; 1870-1871. After the disastrous defeat of the French at Sedan and the capture of Napoleon III; the Prussians surrounded Paris on 9 September 1870. The city held out despite famine and great hardship until 28 January 1871. From a private collection.