The last known surviving veteran of World War I has died. Florence Green, 110, was a waitress in Britain's Royal Air Force. "In a way, that the last veteran should be a lady and someone who served on the home front is something that reminds me that warfare is not confined to the trenches," Retired Air Vice-Marshal Peter Dye told Time. "It reminds us of the Great War, and all warfare since then has been something that involved everyone," Dye, director-general of the RAF Museum, told Time. "It's a collective experience. ... Sadly, whether you are in New York, in London, or in Kandahar, warfare…