Dushman, a Jewish Red Army veteran who later became an Olympic fencer, died in Germany on Saturday.
As a 21-year-old soldier, he used his tank to mow down the camp's electric fence on 27 January 1945, helping to set its prisoners free.
About 1.1 million people were murdered at Auschwitz, most of them Jews.
"When we arrived we saw the fence and these unfortunate people, we broke through the fence with our tanks. We gave food to the prisoners and continued," Dushman told Reuters last year.