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June 28, 1914: Assasination of Archduke Franz Ferdinand 

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June 28, 1914: Assasination of Archduke Franz Ferdinand 

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Archduke Franz Ferdinand and his wife Sophie of Hohenberg were assassinated by a Bosnian Serb student named Gavrilo Princip. This assassination was one of the most important events that initiated World War I.

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July 28, 1914: Austria officially declares war on Serbia

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July 28, 1914: Austria officially declares war on Serbia

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A month after the assassination on Franz Ferdinand and his wife took place, Austria officially declared war on Serbia. This was the official start to what would later become World War I.

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August 23 - 30, 1914: Battle of Tanenberg 

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August 23 - 30, 1914: Battle of Tanenberg 

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The battle of Tanenberg was fought between Germany and Russia. Germany ended up as the victor in this battle, gaining access to fast rail movement. This proved to be of great significance as it allowed them to delay the first Russian army, and to destroy the second Russian army, before returning to once more battle the first Russian army.

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September 5 - 12, 1914: First Battle of Marne

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September 5 - 12, 1914: First Battle of Marne

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The battle of Marne was the turning point of Germany's invasion of France. After having lost in the previous battles of Mons and the Frontiers, the French were able to turn their luck at the first battle of Marne, defeating the Germans with the help of the Britains.

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February 19, 1915 - January 9, 1916: Gallipoli Campaign

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February 19, 1915 - January 9, 1916: Gallipoli Campaign

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The Gallipoli campaign was initiated by the Entente powers (Britain, France, and Russia), who aimed to weaken the Ottoman Empire. However, after fighting for nearly a year and almost 550000 total casualties later, the Entente powers retreated, which meant the Ottoman Empire was crowned as the victor of this campaign.

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February 21 - December 18, 1916: Battle of Verdun

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February 21 - December 18, 1916: Battle of Verdun

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The Battle of Verdun was the longest battle of World War I and it was fought between Germany and France. After months of constant fighting over several strategic locations, France took the victory.

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May 31 - Jun 1, 1916: Battle of Jutland 

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May 31 - Jun 1, 1916: Battle of Jutland 

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The Battle of Jutland was a battle between British forces and the German Empire that took place on the North Sea. After several battles, curiously enough, both sides claimed to be victorious. The British claimed victory since they succeeded in containing the German fleet, which was their main mission. On the other hand, the German Empire claimed victory because they managed to destroy twice as many ships as the British, which they believed to be of larger significance.

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June 4 - September 20, 1916: Brusilov Offensive

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June 4 - September 20, 1916: Brusilov Offensive

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The Brusilov Offensive was a Russian attack that was launched against the Central Powers (German Empire, Austria-Hungary, Bulgaria, Ottoman Empire). The attack ended up being a massive success for the Russian forces, as they managed to deal great damage to the Central Forces. As a result, it relieved pressure for both Italy and France, who were being attacked by respectively Austria-Hungary and the German Empire.

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The Battle of Somme was one of the largest and deadliest battles to ever be fought in human history. The battle was fought by Britain and France against the German Empire. The purpose of the battle was for the Entente to achieve victory quickly. In the end, they managed to penetrate 10 km into the German territory. However, they did have an astonishing 620000 casualties, so whether the battle can be seen as a victory or not is rather questionable.

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Jul 31 - Nov 6, 1917: Battle of Passchendaele 

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Jul 31 - Nov 6, 1917: Battle of Passchendaele 

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The Battle of Passchendaele was a campaign fought by the Entente against the German Empire. The goal of the campaign was to free Flanders, a region in Belgium. The battle ended victorious for the Entente, as the Canadians, their allies, managed to capture Passchendaele.

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The Spring Offense was a final attempt of the German Empire to defeat the Entente before the American troops arrived. The Germans launched several attacks along the west front, which mostly were successful; they managed to reoccupy a large amount of ground and even managed to gain some ground they had not captured before. However, the Spring Offense ended up being a negative event for the Germans, as they lost a large amount of troops in turn for strategically insignificant land, which all in all worsened their changes of winning the war.

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Aug 8 - Aug 11, 1918: The Battle of Amiens / End of World War I

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Aug 8 - Aug 11, 1918: The Battle of Amiens / End of World War I

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The Battle of Amiens was the battle that ultimately led to the end of World War I. It was initiated by the Entente in order to defeat the central powers. The Entente retook a large amount of land, forcing the Germans to retreat from Marne to the north. The battle ended after an armistice was signed between Germany and the Entente, officially ending World War I.