WWI By 20kmiller Jun 28, 1914 Archduke Franz Ferdinand is Assassinated Jul 28, 1914 Austria-Hungary Declares War on Serbia Jul 28, 1914 Russia Protects its Ally in Serbia Jul 28, 1914 Germany Demands that Russia stops, They do not and Declare War on Russia. Jul 29, 1914 France Starts to Mobilize Aug 4, 1914 Germany Attacks France through Belgium Aug 4, 1914 Britain Declares War on Germany for going through Belgium Aug 4, 1914 Germany Creates the Schlieffen Plan Apr 6, 1917 America Enters WWI Nov 11, 1918 WWI Ends