World War I By 9zabanehs Jun 28, 1914 Archduke Franz Ferdinand assassinated in Sarajevo Period: Jun 28, 1914 to Aug 4, 1914 World War I Jul 28, 1914 Austria declared war on Serbia Jul 28, 1914 Russia mobilised Jul 28, 1914 France Mobillised in support of Russia Aug 1, 1914 Germany Declared war on Russia Aug 3, 1914 Germany demanded access through Belgium to fight France Aug 3, 1914 Germany declared war on France and thus invaded Belgium Aug 4, 1914 Britain as ally to Belgium, declared war on Germany
