Timeline of WW1 By matthewrusso98 Jul 28, 1914 Austria-Hungary decare war on Serbia Jul 29, 1914 Russia annonce mobilisation of its vast army in Serbia's defence Aug 1, 1914 Australia enters WW1 Aug 1, 1914 Germany decalared war on Russia Aug 3, 1914 France join the war on Russia's side Aug 4, 1914 Britian declared war on Germany Aug 6, 1914 Austria decalard war on Russia Aug 23, 1914 Japaan declared war on Germany May 1, 1915 Italy joined the war Aug 1, 1915 Gallipoli campaign Jan 1, 1916 Conscription refendum Apr 6, 1917 United States entered the War Nov 11, 1918 End of WW1