After the defeat of French forces at the Battle of Sedan, and the fall of the monarchy of Napoleon III, a new republic was proclaimed. The new government decided to form a new army and continue the war. Major General Émile de Kératry was made responsible for establishing a camp at Conlie in the region of Le Mans and mobilized volunteers from the west of France to form an "army of Brittany". The mobilized quota from the five departments of Brittany was 80,000 men. It was intended that these troops would be equipped with the weapons left over from the American Civil War, but these promised weapons failed to materialize.