<Li> St. Quentin Canal </Li> <Li> Meuse - Argonne </Li> <P> The Meuse - Argonne Offensive, also known as the Maas - Argonne Offensive and the Battle of the Argonne Forest, was a major part of the final Allied offensive of World War I that stretched along the entire Western Front . It was fought from 26 September 1918 until the Armistice of 11 November 1918, a total of 47 days . The Meuse - Argonne Offensive was the largest in United States military history, involving 1.2 million American soldiers . It was one of a series of Allied attacks known as the Hundred Days Offensive, which brought the war to an end . The battle cost 28,000 German lives and 26,277 American lives . It was the largest and bloodiest operation of World War I for the American Expeditionary Force (AEF), which was commanded by General John J. Pershing, and the second-most deadly battle in American history . American losses were exacerbated by the inexperience of many of the troops, and tactics used during the early phases of the operation . </P> <P> The Meuse - Argonne was the principal engagement of the AEF during World War I . </P>

Why was the meuse-argonne offensive a significant battle of wwi