World War I

Assassination of Archduke

Jun 1, 1914

Gavrilo Princip (member of Black Hand Serbian Nationalists) shoots Archduke Franz Ferdinand (heir to Austrian throne) and wife Sophie.

Austria-Hungary declares war on Serbia

Jul 28, 1914

Germany declares war on Russia

Aug 1, 1914

Germany was obligated by treaty to support Austria-Hungary

Germany declares war on France

Aug 3, 1914

Germany invades Belgium

Aug 3, 1914

Germany uses the Schlieffen Plan

Trench warfare begins

May 1, 1915

two parallel systems of deep, rat-infested trenches cross France from the Belgian coast to the Swiss Alps. German soldiers occupied one set of trenches, American soldiers the other.

German U-boat sinks British Lusitania

May 7, 1915

German U-boat sinks British Arabic

Aug 1, 1915

German U-boat sinks French Sussex

Mar 16, 1916

President Wilson re-elected

Nov 14, 1916

Zimmerman Note

Jan 19, 1917

The Zimmerman note was a telegram sent from the German foreign minister to the German ambassador of Mexico saying that when Germany took over the U.S., Mexico could have back lost territories. (N.M., Texas, Arizona)

Kaiser says: U-boats will sink all ships

Jan 31, 1917

This meant the U.S. would have to go to war

U.S. enters WWI

Apr 2, 1917

Selective Service Act begins

May 1, 1917

Treaty of Brest-Litovsk signed

Mar 3, 1918

Russia leaves the war

Sergeant York kills 25 Germans

Oct 8, 1918

with help of several otheres, captures 132 prisoners as well

Austria-Hungray surrenders

Nov 3, 1918

Establishment of German Republic

Nov 9, 1918

The German Kaiser surrenders his throne.

Armistice Signed: War is Over

Nov 11, 1918