The Aisne-Marne Offensive was a significant military campaign during World War I, taking place from July 18 to August 6, 1918. It was launched by the Allied Forces to counter the German Spring Offensive and aimed to push back German troops along the Aisne River in France. This operation marked a turning point in the war, showcasing the effectiveness of coordinated attacks and the use of tanks. The offensive involved various Allied nations, including the United States, which played a crucial role in the success of the campaign. The offensive resulted in substantial territorial gains for the Allies and contributed to the eventual defeat of Germany in November 1918.