Konstantin Dobrovolski was out in the woods like he was most days in early autumn before the inevitable advance of arctic winter. Armed with little more than a map, a shovel and an old metal detector, Dobrovolski has scoured the hostile landscape of Russia’s far north for the last 33 years in search of the long-forgotten remains of Soviet second world war soldiers. “Just today we found the remains of five soldiers, some bones and old medals,” he said, speaking to the Guardian during a research trip outside the Arctic town of Murmansk. “We have to hurry before the ground...