ww1

Austria-Hungary declares war on Serbia

Jul 28, 1914

http://www.history.com/this-day-in-history/austria-hungary-declares-war-on-serbia

ww1

Period: Jul 28, 1914 to Nov 11, 1918

Germany declares war on Russia.

Aug 1, 1914

https://blog.oup.com/2014/08/1-august-1914-germany-declares-war-on-russia/

Germany declares war on France.

Aug 3, 1914

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

Aug 4, 1914

The battle of Tannenburg begins

Aug 26, 1914

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

Sep 5, 1914

Battle of Ypres begins.

Oct 19, 1914

https://en.wikipedia.org/wiki/First_Battle_of_Ypres

The unofficial Christmas truce is declared.

Dec 24, 1914

Germany declares a "war zone" around Great Britain, essentially effecting a submarine blockade where even neutral merchant vessels were to be potential targets.

Feb 4, 1915

The Battle of Gallipoli begins.

Apr 25, 1915

February 21 - The Battle of Verdun begins. The Battle of Verdun was the longest battle of World War I and was one of the bloodiest.

Feb 21, 1916

April 6 - The United States declares war on Germany.

Apr 6, 1917

http://www.history.com/this-day-in-history/america-enters-world-war-i

U.S. President Woodrow Wilson issues his Fourteen Points to peace.

Jan 8, 1918

The Treaty of Versailles officially ends WWI.

Jun 28, 1919

The Treaty of Versailles officially ends WWI.

Jun 28, 1919

http://www.americaslibrary.gov/jb/jazz/jb_jazz_ww1_1.html