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Battle of Tanneberg
It was caused by the Russian invasion of Eastern Prussia. Germany ended up winning the fight and there was a total of around 180,000 deaths. This was a near loss in the Russian second army. -
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First Battle of The Marne
The French and British forces successfully halt the German advance towards Paris, forcing them to retreat and effectively ending Germany's hopes for a quick victory on the Western Front; this battle is considered a major turning point in the war, preventing the capture of Paris and setting the stage for trench warfare that would characterize much of the conflict. -
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Second Battle of Ypres
The battle marked the Germans' first use of poison gas as a weapon. Although the gas attack opened a wide hole in the Allied line, the Germans failed to exploit that advantage. -
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Battle of Gallipoli
The Gallipoli campaign was unsuccessful for the Allies. But the campaign did help to draw Ottoman troops away from the Caucasus front. Running from the Black Sea to Persia, Russian and Ottoman soldiers were engaged in bitter fighting. -
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Battle of Verdun
The French repulsed a major German offensive. It was one of the longest, bloodiest, and most-ferocious battles of the war; French casualties amounted to about 400,000, German ones to about 350,000. Some 300,000 were killed. -
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Battle of Jutland
The largest naval battle of the First World War, involving 250 ships and around 100,000 men. Over the course of the battle there were periods of intense action and inaction. In the end, 6,000 British and 2,500 German sailors were dead. -
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Brusilov Offensive
The Brusilov Offensive was a major Russian attack against the Austro-Hungarian forces on the Eastern Front during World War I, led by General Aleksei Brusilov, where the Russians achieved significant initial success, capturing large amounts of territory and taking many prisoners, but ultimately the offensive stalled due to heavy losses and a lack of resources to exploit the gains, although it did force Germany to divert troops away from the Western Front. -
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Battle of The Somme
Allied offensive in World War I. British and French forces launched a frontal attack against an entrenched German army north of the Somme River in France. A weeklong artillery bombardment was followed by a British infantry assault on the still-impregnable German positions. -
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Battle of Passchendaele
After weathering fierce enemy counterattacks, the last phase of the battle saw the Canadians attack on November 10 and clear the Germans from the eastern edge of Passchendaele Ridge before the campaign finally ground to a halt. Canadian soldiers had succeeded in the face of almost unbelievable challenges. -
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Battle of Caporetto
A devastating defeat for the Italian army at the hands of a combined Austro-German force, resulting in a massive retreat and a significant loss of Italian soldiers due to the surprise attack and effective use of infiltration tactics by the Central Powers, causing a major blow to Italian morale and forcing them to withdraw significantly from the Isonzo front -
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Battle of Cambrai
Marked the first large-scale use of tanks in warfare, where British forces launched a surprise attack against German lines near Cambrai, France, using a significant number of tanks, achieving initial success by capturing territory and prisoners, but were eventually forced back by strong German counterattacks, leaving the battle with no clear victor, but demonstrating the potential of tanks in combat; considered a significant turning point in tank warfare tactics. -
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Spring Offensive
6,500 German guns and 3,500 heavy mortars opened up a terrifying five-hour barrage against the British Third and Fifth Armies on the Western Front. -
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Second Battle of the Marne
Marked the last major German offensive on the Western Front, where the Allies, primarily French forces supported by American troops, successfully halted and counterattacked a German assault near the Marne River, effectively turning the tide of the war and forcing the Germans into a retreat, ultimately leading to their defeat and the end of the war. -
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Battle of Belleau Wood
The U.S. Marine Corps successfully defend against a major German offensive, engaging in fierce hand-to-hand combat and ultimately driving the German forces from the Belleau Wood area, earning the Marines their nickname "Devil Dogs" from the impressed German soldiers who called them "Teufelhunden" (Hounds from Hell) due to their relentless fighting spirit; this battle is considered a significant turning point for the American forces in the war. -
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Hundred Days Offensive
a series of major Allied attacks on the Western Front during World War I, starting on August 8, 1918, and culminating in the defeat of the German army, leading to the Armistice on November 11, 1918, effectively ending the war; this offensive involved a sustained push by Allied forces, including British, French, Canadian, American, and Australian troops, that drove the German army back to their original 1914 battlefields.