-
June 28th 1914
Assassination of Archduke Franz Ferdinand and his wife,Sophie -
July 28th 1914
Austria-Hungary declares war on Serbia -
August 1st 1914
Germany declares war on Russia -
August 3rd 1914
Germany declares war on France -
August 7th 1914
First British troops land in France -
August 12th 1914
Great Britain and France declare war on Austria-Hungary.Serbia is invaded by Austria-Hungary -
August 23rd 1914
the Battle of Mons, British vs German -
November 1st 1914
The Ottoman Empire enters the war after Russia declared war on the Empire -
February 4th 1915
Germany declared the waters about the British Isles a war zone -
April 24th 1915
the Armenian genocide began -
April 26th 1915
Italy signs the Treaty of London, committing itself to enter World War I on the side of the Allies. -
May 7th 1915
Lusitania sunken by German submarine -
July 1st 1916
Battle of Somme, British empire and France vs German Empire -
November 21st 1916
HMHS Britannic sank after hitting a mine killing 30 people -
January 9th 1917
Ottoman Empire prevailed over a joint British and French operation to capture Constantinople -
march 3rd 1917
Zimmermann telegram -
April 6th 1917
the United States formally declared war against Germany -
June 25th 1917
The first American troops land in France and Greece declares war on the Central Powers -
August 14th 1917
China declared war on Germany -
November 5th 1917
-
January 8th 1918
U.S. President Woodrow Wilson outlined the United States' war aims in a speech given to Congress -
March 4th 1918
First recorded case of Spanish flu at Funston Army Camp, Kanas; start of worldwide pandemic killing 50-100 million -
November 11th 1918
Armistice Day -
January 18th 1919
Paris Peace Conference -
June 28th 1919
Germany signed the Treaty of Versailles, officially ending its involvement in World War I
