[ speaking in foreign language ] reporter: soviet troops battled here to break the nazi siege of what was lenden grad, victory came but at enormous cost. tens of thousands of soldiers lost their lives in this area along. many russians including 22-year-old volunteer daria, it feels like a personal loss, even 70 years old. so your grandfather died in this area? yes, yes. and had his belongings were found during the search and expedition in 2013 here. that s why reporter: and that was good, was it, a good feeling when your grandfather s remains were brought back? yes. it was the beginning for me. reporter: work to recover the