The last living veteran of World War I ( 28 July 1914 -- 11 November 1918 ) was Florence Green , a British citizen who served in the Allied armed forces , and who died 4 February 2012 , aged 110 .
The last living veteran of World War I ( 28 July 1914 -- 11 November 1918 ) was Florence Green . She was a British woman who served in the Allied armed forces , and who died on 4 February 2012 , aged 110 .