The Paris Commune (French: Commune de Paris, pronounced [kɔ.myn də pa.ʁi]) was a French revolutionary government that seized power in Paris on 18 March 1871 and controlled parts of the city until 28 May 1871. During the Franco-Prussian War of 1870–71, the French National Guard had defended Paris, and working class radicalism grew among its soldiers. Following the establishment of the French Third Republic in September 1870 (under French chief-executive Adolphe Thiers from February 1871) and the complete defeat of the French Army by the Germans by March 1871, soldiers of the National Guard seized control of the city on 18 March.