[dropcap]I[/dropcap]n 1870, tensions arise between France ( Second Empire ) and Prussia. Feeling insulted by William I , Napoleon III declared war on Prussia. For Bismarck, then Chancellor , a war against France as a means of completing the unification of Germany .
The conflict lasted from 19 July 1870 to 19 January 1871 .
The rout is fast . The capitulation of the Emperor at Sedan on 2 September 1870 leads to the establishment of a Government of National Defence , who , soon after , must ask the armistice : the Treaty will be signed in Frankfurt May 10, 1871 .
Following this defeat , while the German Empire is found united under the Prussian crown. Germany also decided to annex Alsace and Lorraine, who remain German until the end of the First World War .
The Battle of Loigny
November 24, 1870 at Brou, in Eure-et-Loir ,