Published today on the BBC News website is the story of the Unknown Warrior.
http://www.bbc.co.uk/news/magazine-11710660
The story is also told in pictures here...
http://www.bbc.co.uk/news/magazine-11713676
Lest we forget.
The only site you need if you are studying the Edexcel AS Level Unit 2 topic - The Experience of Warfare in Britain, 1854-1929