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The Beginnig
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. -
Period: to
World War 1
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The start
July 28 - Austria-Hungary declares war on Serbia. -
The War
August 1 -- Germany declares war on Russia. -
The War
August 3 - Germany declares war on France. -
The War
August 4 - The United Kingdom declares war on Germany, after Germany invades Belgium. -
The War
August 6 - Austria-Hungary declares war on Russia and Serbia declares war on Germany. -
The Battle
August 19 - U.S. President Woodrow Wilson announces the U.S. will remain neutral. -
The Battle
August 26 - The Battle of Tannenberg begins. -
The First Battle
September 5 - The First Battle of the Marne begins. Trench warfare begins as soldiers on both sides dig in. -
Battle
October 19 - Battle of Ypres begins. -
The U.K
November 3 - The United Kingdom announces that the North Sea is a military area, effectively creating a blockade of goods into Germany. -
A truce
December 24 The unofficial Christmas truce is declared. -
War Zone
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. -
Campaing
February 19 - The Dardanelles Campaign begins. -
The 2nd Battle
April 22 - The Second Battle of Ypres begins. It is during this battle that the Germans first use poison gas. -
The Battle
April 25 - The Battle of Gallipoli begins. -
The British
May 7 - The British ocean liner RMS Lusitania is sunk by German U-boat, U-20 -
Russia
September 5 - Tsar Nicholas II takes personal control over Russia's armies. -
The Battle
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. -
The Battles
May 31 - The Battle of Jutland, the major naval battle of the war, begins. -
The Battle
July 1 - The Battle of the Somme begins. During the Battle of the Somme, tanks are first introduced into battle. -
Mexico
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. -
Russian
March 15 - Russian Tsar Nicholas II abdicates. -
The War
April 6 - The United States declares war on Germany. -
The Battle
July 31 - The Battle of Passchendaele (also known as the Third Battle of Ypres) begins. -
The Overthrow
November 7 - The Bolsheviks successfully overthrow the Russian government. -
The War
December 17 - The armistice agreed upon between the new Russian government and the Central Powers goes into effect. -
The President
January 8 - U.S. President Woodrow Wilson issues his Fourteen Points to peace. -
Russia
March 3 - Russia signs the Treaty of Brest Litovsk, which is a peace treaty between Russia and the Central Powers. -
Germany
March 21 - Germany launches the Spring Offensive. -
Flying Ace
April 21 - German flying ace, Baron Manfred von Richthofen (more commonly known as the Red Baron), is shot down. -
The 2nd Battle
July 15 - The Second Battle of the Marne begins. -
Germany
November 9 - German Kaiser Wilhelm II abdicates and flees Germany. -
The Fight
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). -
The Treaty
June 28 - The Treaty of Versailles officially ends World War 1.