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Murder of the heir to the Austro-Hungarian Empire
This was one of the triggers of the First World War. -
Period: to
Movement war
At the beginning of the war there were many troop movements, since both fronts wanted to obtain a quick victory. -
Invasion of East Prussia
One of the largest confrontations on the eastern front. -
Battle of Tannenberg
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1st battle of the Marne
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Period: to
Trench warfare
After the Battle of the Marne, the armies protected themselves with trenches to prevent enemy advances. -
Italy enters the war
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Bulgaria declares war on Serbia
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Bulgaria enters the Triple Alliance
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Brusilov Offensive
Russian offensive on the eastern front. -
Battle of the Somme
The United Kingdom launched an assault against the German trenches. -
Romania enters the war
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End of the Battle of Verdun
France obtains victory after almost ten months and 700,000 casualties between French and German. -
Period: to
Crisis
Russia abandons the war and the United States declares war on Germany. -
Revolution in Russia
The continuous defeats in the Great War and the consequent massive desertions led to the greatest revolution of the 20th century. -
United States enters war
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Kerensky offensive
Russia launches another offensive against Germans and Austrians. -
Second phase of the revolution in Russia
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Period: to
Final stage
The signing of the Treaty of Versailles signed on June 28, 1919 finally marked peace. -
Treaty of Brest-Litovsk with Russia
It ended Russian participation in the First World War. -
2nd battle of the Marne
It was the last major German offensive on the Western Front, which concluded with the armistice. -
Armistice
It marked the end of fighting in Europe during World War I. -
Treaty of Versailles
It formally ended World War I and at the same time laid the foundation for World War II.