Second Battle of the Marne
The Second Battle of the Marne was fought in July 1918. It was the turning point of World War I for the Allied Powers. The battle was fought near the Marne river about seventy miles northeast of Paris.
The battle began with the last of the German Spring offensives. The first two days saw the Germans make significant gains against the French Sixth Army, while the 3rd U.S. Infantry Division was only major unit that managed to hold its ground. Eventually American and British reinforcements arrived and managed to halt and successfully counter-attack the Germans.
Both sides suffered high causalities during the battle. The Germans also lost half of their artillery pieces that were involved in the battle. Former President Teddy Roosevelt's son was killed in the battle.