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Archduke Franz Ferdinand, heir to the throne of Austro-Hungarian Empire, and his wife are assassinated.
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- Emperor Franz Joseph of Austria-Hungary declares war on Serbia.
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The Ottoman Empire signs a secret alliance with Germany agreeing to enter the war once Germany declares war on Russia. They formally enter the war several months later on October 28,1914 when they bomb Russian sea ports. Bulgaria joins the Central Powers.
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Germany declares war on neutral Belgium and invades Belgium and Luxembourg as part of the Schlieffen Plan. As a result, Britain declares war on Germany.
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Germany declares war on neutral Belgium and invades Belgium and Luxembourg as part of the Schlieffen Plan. As a result, Britain declares war on Germany.
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Austria-Hungary declares war on Russia.
Austria-Hungary declares war on Russia. -
The United States declares neutrality in the war.
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Austria-Hungary declares war on Russia.
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The United States declares neutrality in the war
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The United States declares neutrality in the war.
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Austria-Hungary declares war on Russia
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Period: to
The German army defeats Russia at the Battle of Tannenberg.
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Period: to
The German army defeats Russia at the Battle of Tannenberg.
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German invasion of France is halted at the First Battle of Marne.
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German invasion of France is halted at the First Battle of Marne.
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The Race to the Sea ends when the Germans withdraw at the 1st Battle of Ypres.
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The Race to the Sea ends when the Germans withdraw at the 1st Battle of Ypres.
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Unofficial Christmas truce is declared by German and Allied soldiers in the trenches along the Western Front.
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Period: to
The Germans use poison gas at the 2nd battle of Ypres.
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Italy Joins the Allies.
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Allies begin a nine-month battle for the Turkish peninsula of Gallipoli.
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British nurse, Edith Cavell, is executed by the Germans.
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Period: to
The Battle of Verdun is fought resulting in an estimated one million casualties.
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Period: to
The British introduce the tank during the Battle of Somme. The battle results in an estimated one million
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Woodrow Wilson is re-elected President of the United States.
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British cryptographers decipher a telegram from German Foreign Minister Arthur Zimmerman to the German Minister of Mexico.
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President Wilson asks the U.S. Congress for a declaration of war against Germany.
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Period: to
The 3rd battle of Ypres, also known as Passchendaele, results in minor gains for the Allies and a total of 700,000 casualties.
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The Balfour Declaration is presented in London.
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President Wilson outlines his Fourteen Points in a speech before Congress.
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Germans on the banks of the Marne near Paris are stopped by American forces at Chateau-Thierry
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Emperor Karl of Austria abdicates.
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Kaiser Wilhelm II of Germany abdicates
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Germany and Allies sign the Treaty of Versailles. The U.S. Senate later refuses to ratify it.
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The Treaty of Sevres ends the war on the Eastern Front with the Ottoman Empire.