What's is interesting in these pictures is the importance given nowadays to the recovering of the corpses, the identification of the unit and when it's possible of the soldier himself. The commonwealth war grave commission is doing at the moment a great job in Fromelles (Near Lille) where aound 400 "diggers" (Australian soldiers) and some British soldiers were killed in 1916. you can find some infos here : http://sentierdunord.free.fr/balade%20a%20Fromelles.html.
The Australian authorities try to identify the corpses by DNA, that's quite moving since some families are waiting for more than 80 years for that.
see also
http://www.fromelles.net/
http://nz.news.yahoo.com/a/-/world/6742216/fromelles-soldiers-reburied-with-honours/
I believe that collecting items, trying to understand what happened to these men is a way to honour them. I participated in several ceremonies in Fromelles, as a representative of the French armed forces and that was quite moving. It's also a way to gather the "old" allied countries and to remember that we've been fighting together for a certain idea of the world and of liberty, first in WW1 and unfortunately some years later in WW2... It's a way to relativise some of our more recent "disputes" and to come back to the main idea, solidarity between nation sharing the utopic idea of a world of justice and liberty. It's also a way to say to our former enemies in WW1 that we respect their ancesters and that we treat them as soldiers, with the honour they deserve. They were also fighting for their country... and their grand fathers were as brave as our grand fathers.