Battle of the Marne

The Battle of the Marne marked a pivotal moment in World War I, leading to the establishment of trench warfare that would dominate the conflict. Despite the initial failure of the Schlieffen plan, the German high command believed they could still secure victory, unaware that the war would evolve into a prolonged and grueling stalemate. As historian Barbara Tuchman noted, this battle was decisive not for determining winners or losers, but for ensuring that the war would continue with no turning back.