world war I

Austria-Hungary declares war on Serbia

Jun 28, 1914

Austria-Hungary declares war on Serbia

world war I

Period: Jun 28, 1914 to May 19, 1918

•August 1 -- Germany declares war on Russia

Aug 1, 1914

•August 1 -- Germany declares war on Russia

Germany declares war on France

Aug 3, 1914

•August 3 - Germany declares war on France

The United Kingdom declares war on Germany, after Germany invades Belgium.

Aug 4, 1914

•August 4 - The United Kingdom declares war on Germany, after Germany invades Belgium.

Austria-Hungary declares war on Russia and Serbia declares war on Germany

Aug 6, 1914

•August 6 - Austria-Hungary declares war on Russia and Serbia declares war on Germany

The Battle of Tannenberg begins

Aug 26, 1914

•August 26 - The Battle of Tannenberg begins

The First Battle of the Marne begins. Trench warfare begins as soldiers on both sides dig in.

Sep 5, 1914

•September 5 - The First Battle of the Marne begins. Trench warfare begins as soldiers on both sides dig in.

Battle of Ypres begins

Oct 19, 1914

•October 19 - Battle of Ypres begins

blockade of goods into Germany

Nov 3, 1914

•November 3 - The United Kingdom announces that the North Sea is a military area, effectively creating a blockade of goods into Germany

The Second Battle of Ypres begins.

Apr 22, 1915

•April 22 - The Second Battle of Ypres begins. It is during this battle that the Germans first use poison gas