From 1940 to 1945, an estimated 1.3 million people were deported to Auschwitz, the largest complex of Nazi concentration camps. More than four out of five of those people—at least 1.1 million people—were murdered there.

On January 27, 1945, Soviet forces liberated the final prisoners from these camps—7,000 people, most of whom were sick or dying. Those of us with a decent public education are familiar with at least a few names of Nazi extermination facilities—Auschwitz, Dachau, Bergen-Belsen—but these are merely a few of the thousands (yes, thousands) of concentration camps, sub camps, and ghettos spread across Europe where Jews and other targets of Hitler's regime were persecuted, tortured, and killed by the millions.