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June 28
Heir to the Austria-Hungarian throne, Archduke Franz Ferdinand is assassinated by a Serbian group called the Black Hand -
July 23-28
Austria-Hungary demands Serbia for retribution, after no demands are fulfilled, Austria-Hungary declares war on Serbia. Russia begins transporting troops. -
August 1-4
Germany declares war on Russia and France as part of the Schlieffen plan. They invade Belgium and in result British declares war on Germany. -
May 7
Germany attacks the Lusitania, a British luxury ship, with submarines. -
February 4
Germans begin to use u-boats(submarines) around Britain to sink Allied merchant ships. -
February 21
The Battle of Verdun begins between France and Germany. -
May 31
The largest naval battle of the war, the Battle of Jutland, is fought between Britain and Germany in the North Sea. -
July 1
The Battle of the Somme begins. Over 1 million soldiers will be wounded or killed. -
January 19
The British intercept the Zimmerman Telegram in which Germany tries to convince Mexico to join the war. This will result in the United States declaring war on Germany. -
April 6
The United States enters the war, declaring war on Germany. -
December 17
The Russians agree to peace with the Central powers and leave the war. -
January 8
President Woodrow Wilson issues his "Fourteen Points" for peace and an end to the war. -
November 11
Germany agrees to an armistice and the fighting comes to an end at 11AM on the 11th day of the 11th month. -
June 28
The Treaty of Versailles is signed by Germany and World War I comes to an end.