On September 26, 1918, America and its allies launched the Meuse-Argonne Offensive, the final Allied offensive of the First World War. Over 1.2 million Americans took part. For 47 days, the U.S. First Army fought across a 24-mile front. They faced poor weather, unforgiving terrain, and a determined German adversary as they battled forward. This was their moment to help bring the war to an end. Victory came at a great price – Americans casualties numbered over 100,000, making it the costliest mil