 The levée en masse was a conscription army used during the Revolutionary and Napoleonic Wars.At the time of the Franco-Prussian War, the Parisian National Guard engaged the Prussian Army and later rebelled against the Versailles Army under Marshal McMahon.Under German occupation during World War II, a militia usually called the French Resistance emerged to conduct a guerrilla war of attrition against German forces and prepare the way for the D-Day Allied Invasion of France.