The liberation of France (French: libération de la France) in the Second World War was accomplished through the combined military efforts of the Allied Powers including Free French forces in London and Africa, and the French Resistance.
Nazi Germany invaded France in May 1940. Their rapid advance through the almost undefended Ardennes caused a crisis in the French government; the French Third Republic dissolved itself in July, and handed over absolute power to Marshal Philippe Pétain, an elderly hero of World War I. Pétain signed an armistice with Germany with the north and west of France under German military occupation. Pétain, charged with calling a Constitutional Authority, instead established an authoritarian government in the spa town of Vichy, in the southern zone libre ("free zone"). Though nominally independent, Vichy France became a collaborationist regime and was little more than a Nazi client state that actively participated in Jewish deportations and aided German forces in anti-partisan actions in Occupied France as well as in combat actions in Africa.