The Second Army was a military formation of the United States Army during World War I. Established in 1918, it played a crucial role in the final offensives against the German Empire. The army was primarily composed of troops from the American Expeditionary Forces and was involved in significant battles, including the Meuse-Argonne Offensive. After the war, the Second Army was disbanded in 1919. Its legacy continued as the army's structure evolved, influencing future military organization and strategy. The Second Army's contributions are remembered as part of the broader efforts of the U.S. military during the Great War.