CHAMPAGNE-ARDENNE, FRANCE—The skeletal remains of a young man killed in World War I has been unearthed by volunteers in northeastern France, according to a report in The Telegraph. The uniform and equipment in the grave identify the man as a German soldier. Archaeological work in the area has also uncovered a network of tunnels and trenches that were part of the far right front line during the fighting. The tunnels were filled in by farmers after the war.