History of War



World War I: Timeline (1914-1918)

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June 28, 1914
During their visit to Sarajevo, heir to Austrian-Hungarian throne Archduke, Franz Ferdinand, and his wife Sophie are assassinated by Serbian nationalist Gavrilo Princip.

July 28, 1914
Austria-Hungary declares war on Serbia.

August 1, 1914
Germany declares war on Russia.

August 3, 1914
Germany declares war on France.

August 4, 1914
After Germany Invades Belgium, the United Kingdom declares war on Germany.

August 6, 1914
Austria-Hungary declares war on Russia and Serbia declares war on Germany.

August 19, 1914
U.S. President Woodrow Wilson announces the U.S. will remain neutral.

September 5-12, 1914
The First Battle of the Marne – French, Entente victory.

November 3, 1914
The United Kingdom declares the North Sea a military area, creating a blockade for goods into Germany.

February 4, 1915
Germany declares a "war zone" around Great Britain, as a response to their blockade.

April 22 - May 25, 1915
The Second Battle of Ypres – Canadian, Entente victory. Germans use poison gas for the first time.

May 7, 1915
The British ocean liner RMS Lusitania, a British ocean liner, is sunk by German U-boat, U-20.

February 21 - December 18, 1916
The Battle of Verdun, the longest of the war – French, Entente victory.

May 31 - June 1, 1916
The Battle of Jutland, the major naval battle of the war– inconclusive tactically, strategic British victory.

July 1 - November 18, 1916
The Battle of the Somme. Tanks are introduced into battle for the first time. 1 million deaths and inconclusive result.

March 15, 1917
Russian Tsar Nicholas II abdicates from the war.

April 6, 1917
The United States declares war on Germany.

July 31 - November 10, 1917
The Battle of Passchendaele. Both British and German armies suffer unnecessary casualties due to unrelenting offensive by British forces into the autumn of 1917.

December 17
The armistice agreed upon between the new Russian government and the Central Powers goes into effect.

January 8, 1918
U.S. President Woodrow Wilson issues his Fourteen Points to peace.

March 21, 1918 - July 18, 1918
Germany launches the Spring Offensive – German, Central Power victory.

July 15, 1918 - August 6, 1918
The Second Battle of the Marne - Decisive Allied victory.

November 9, 1918
German Kaiser Wilhelm II abdicates and flees Germany.

November 11, 1918
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 28, 1919
The Treaty of Versailles officially ends WWI, creating a new set of borders in Europe.