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•June 28 - Archduke Franz Ferdinand, heir to Austria-Hungary's throne, and his wife, Sophie, are assassinated by Serbian nationalist Gavrilo Princip while the couple were visiting Sarajevo.
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•February 19 - The Dardanelles Campaign begins
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•July 1 - The Battle of the Somme begins. During the Battle of the Somme, tanks are first introduced into battle.
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•December 17 - The armistice agreed upon between the new Russian government and the Central Powers goes into effect
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•January 8 - U.S. President Woodrow Wilson issues his Fourteen Points to peace
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•June 28 - The Treaty of Versailles officially ends WWI