Which battle is considered the turning point that effectively ended World War I?

The Battle of Argonne Forest is considered the turning point that effectively ended World War I. This major campaign, which took place from September 26 to November 11, 1918, involved American forces in partnership with their Allies against the German Empire. The successful offensive not only contributed significantly to the weakening of German positions on the Western Front, but it also demonstrated the growing strength and effectiveness of American troops in large-scale warfare.

The Battle of Argonne Forest resulted in substantial territorial gains for the Allies and ultimately led to the collapse of German morale, which was pivotal in bringing about an armistice on November 11, 1918. Its significance is underscored by the fact that it was part of the larger Meuse-Argonne Offensive, one of the largest in U.S. military history, which showcased the United States’ critical role in the final stages of the war.

In contrast, the Battle of Verdun and the Battle of the Somme, while significant battles during the war, took place earlier and did not have the same immediate impact on the war's conclusion. They were marked by high casualty rates and symbolized the brutal stalemate that characterized much of World War I. The Battle of Tannenberg, fought on