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June 28 - Archduke Franz Ferdinand
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, Bosnia. -
• July 28 1914
- Austria-Hungary declares war on Serbia.
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• August 1
-- Germany declares war on Russia -
August 3
• August 3 - Germany declares war on France. -
August 4
August 4 - The United Kingdom declares war on Germany, after Germany invades Belgium. -
August 6
• August 6 - Austria-Hungary declares war on Russia and Serbia declares war on Germany. -
August 19
• August 19 - U.S. President Woodrow Wilson announces the U.S. will remain neutral. -
August 26
• August 26 - The Battle of Tannenberg begins. -
September 5
• September 5 - The First Battle of the Marne begins. Trench warfare begins as soldiers on both sides dig in. -
October 19
• October 19 - Battle of Ypres begins. -
November 3
• November 3 - The United Kingdom announces that the North Sea is a military area, effectively creating a blockade of goods into Germany. -
December
• December 24 The unofficial Christmas truce is declared. -
February 4
• February 4 - Germany declares a "war zone" around Great Britain, essentially effecting a submarine blockade where even neutral merchant vessels were to be potential targets. -
February 19
February 19 - The Dardanelles Campaign begins. -
April 22
• April 22 - The Second Battle of Ypres begins. It is during this battle that the Germans first use poison gas. -
April 25
• April 25 - The Battle of Gallipoli begins. -
May 7
• May 7 - The British ocean liner RMS Lusitania is sunk by German U-boat, U-20 -
September 5
• September 5 - Tsar Nicholas II takes personal control over Russia's armies. -
February 21
• February 21 - The Battle of Verdun begins. The Battle of Verdun was the longest battle of World War 1 and was one of the bloodiest. -
May 31
• May 31 - The Battle of Jutland, the major naval battle of the war, begins. -
July 1
• July 1 - The Battle of the Somme begins. During the Battle of the Somme, tanks are first introduced into battle. -
January 19
• January 19 - Germany sends the secret Zimmerman Telegram to Mexico in an effort to entice Mexico to join the war. The British intercept and decipher the coded message. -
March 15
• March 15 - Russian Tsar Nicholas II abdicates. -
April 6
• April 6 - The United States declares war on Germany. -
July 31
• July 31 - The Battle of Passchendaele (also known as the Third Battle of Ypres) begins. -
November 7
• November 7 - The Bolsheviks successfully overthrow the Russian government. -
December 17
• December 17 - The armistice agreed upon between the new Russian government and the Central Powers goes into effect. -
January 8
• January 8 - U.S. President Woodrow Wilson issues his Fourteen Points to peace. -
March 3
• March 3 - Russia signs the Treaty of Brest Litovsk, which is a peace treaty between Russia and the Central Powers. -
March 21
• March 21 - Germany launches the Spring Offensive. -
April 21
• April 21 - German flying ace, Baron Manfred von Richthofen (more commonly known as the Red Baron), is shot down. -
July 15
• July 15 - The Second Battle of the Marne begins. -
November 9
• November 9 - German Kaiser Wilhelm II abdicates and flees Germany. -
November 11
• November 11 - Germany signs the armistice at Compiegne, France. Fighting ends on the 11th hour of the 11th day of the 11th month (i.e. 11 a.m. on November 11). -
June 28th, END of WW1
• June 28 - The Treaty of Versailles officially ends World War 1.