A couple of links to give some background as to how we commemorate the war dead at this time of year.
Why 11th November?
http://www.firstworldwar.com/features/armistice.htm
A history of the Poppy Appeal
http://www.britishlegion.org.uk/about-us/history-of-the-poppy-appeal
The Last Post - Why do we sound 'The Last Post'
http://en.wikipedia.org/wiki/Last_Post
Search for your own family at the Commonwealth War Graves Commission site.
http://www.cwgc.org/