The Soviet Army liberated the Auschwitz concentration camp in Poland on January 27, 1945.
About 7,000 prisoners were in the camp when the Soviets arrived. Those left behind were too weak or sick to move when Nazi SS officers forced nearly 60,000 prisoners to march west as the Soviets approached.
Historians estimate more than 1 million Jews, Gypsies, Soviet prisoners of war and Poles were murdered at the camp.