May be an interesting read: Digging for their lives: Russia's volunteer body hunters from BBC
Of the estimated 70 million people killed in World War Two, 26 million died on the Eastern front - and up to four million of them are still officially considered missing in action. But volunteers are now searching the former battlefields for the soldiers' remains, determined to give them a proper burial - and a name.
http://www.bbc.co.uk/news/magazine-25589709