Argonne - Map indicating the successive belts of territory retaken by the French and American troops from the end of September 1918, up to the signing of the armistice on November 11 1918. The Meuse–Argonne offensive was a major part of the final Allied offensive of World War I that stretched along the entire Western Front. It was fought from September 26, 1918, until the Armistice of November 11, 1918, a total of 47 days.