World War I By shendrickson Jun 28, 1914 Assassination of Archduke Ferdinand Assassination Information Jul 28, 1914 Austria-Hungary declares war on Serbia Declaration of war Aug 1, 1914 Germany and Russia declare war on each other. Information Aug 1, 1914 Battle of Tannenberg (1914) Tannenberg Battle Video Sep 1, 1914 First Battle of Marne (1914) Battle of Marne Oct 16, 1915 France declares war on Bulgaria. Information Feb 21, 1916 Battle of Verdun (1916) Battle of Verdun Cartoon Jul 1, 1916 Battle of the Somme (1916) Battle Footage Apr 6, 1917 U.S. Enters War Why did the U.S. enter WW1? Apr 17, 1917 French tanks used for the first time in battle Car Schneider Tank Nov 20, 1917 Battle of Cambrai (1917) Information Nov 11, 1918 Armistice Day Armistice Day Jun 28, 1919 Signing of the Treaty of Versailles. Treaty of Versailles Video Jun 4, 1920 Signing of the Treaty of Trianon Information about the Treaty of Trianon
