July 23

On this date in 1944, Soviet forces made the first liberation of a Holocaust concentration camp (Majdanek). The Soviets would go on to make the second liberation (of Auschwitz, the most notorious camp) as well sometime later, and other camps were liberated after that by other Allied forces. The last two camps to be dissolved were actually destroyed by the Nazis, not liberated by Allied forces, close to the Nazis' surrender.