I thought I'd give a plug to The War Graves Photographic Project for no other reason than I think it's an excellent initiative. I am a volunteer for the project and have taken photographs at Kirkee in India. Sadly, I don't travel very much and so this has been my only contribution so far - and that, some years ago now - but the project has volunteers located across the globe, and a photographic archive of over 1.1 million names.
My great uncle, John Frederick Nixon, killed in action in October 1918 and commemorated at Vis-en-Artois is one of those names, as is Ernest Whitcomb who was a frostbite patient at Hickwells in 1915. He transferred to the Labour Corps and died on 10th December 1918 in what is now Kalamaria, Greece. He is buried in the Mikra British Cemetery.
British Army WW1 Records