World War One By taylamacnair Jun 28, 1914 Franz Ferdinand is assasinated by Serbia Austria/Hungary declares war on Serbia Jul 31, 1914 Russia mobilises troops Aug 1, 1914 Germany declares war on Russia Aug 2, 1914 Formation on the Eastern Front Aug 3, 1914 Germany declares war on France Aug 4, 1914 Brittain declares war on Germany + Western front is formed Period: Apr 25, 1915 to Jan 9, 1916 Gallipoli Campaign Period: Jul 1, 1916 to Nov 18, 1916 Battle of Somme Period: Apr 1, 1917 to Nov 1, 1917 Withdrawal of Russia Apr 6, 1917 Entrance of the United States Mar 3, 1918 Eastern Front Collapse Period: Mar 21, 1918 to Jul 18, 1918 Western Front Push Nov 11, 1918 End of the War Jun 28, 1919 Treaty of Versilles