World War 1

Assassination of the Archduke Ferdinand

Jun 28, 1914

Archduke Ferdinand

Russia Mobilizes

Jul 30, 1914

Russia Mobilizes

Britain declares war on Germany.

Aug 4, 1914

Britain declares war on Germany

Battle of Tannenberg

Aug 26, 1914

Battle of Tannenberg

Gallipoli Campaign

Period: Feb 17, 1915 to Jan 9, 1916

Gallipoli Campaign

May 7, 1915. Lusitania Sinks

May 7, 1915

Lusitania Sinks

Jul 1, 1916 – Nov 18, 1916 The Battle of Somme

Period: Jul 1, 1916 to Nov 18, 1916

Battle of Somme

Feb 25, 1917 Zimmerman Telegram

Feb 25, 1917

Zimmerman Telegram

U.S. declares war on Germany.

Apr 6, 1917

U.S. declares war on Germany

Jul 31, 1917 – Nov 10, 1917 Battle of Passchendaele

Period: Jul 31, 1917 to Nov 10, 1917

Battle of Passchendaele

Battle of Cambrai

Period: Nov 20, 1917 to Dec 6, 1917

Battle of Cambrai

U.S. declares war on Austria-Hungary.

Dec 7, 1917

U.S. declares war on Austria-Hungary

Armistice Day

Nov 11, 1918

Armistice Day

Signing of the Treaty of Versailles

Period: Jun 28, 1919 to Jan 21, 1920

Treaty of Versailles