The International Day of the Liberation of Nazi Concentration Camps is marked every year on 11 April in memory of the significant event, which happened in 1945.
…The concentration camp Buchenwald was established near the city of Weimar in Germany in summer 1937. About 250,000 people of 32 nationalities went through this dreadful place from July 1937 through April 1945. More than 56,000 of them died, including about 19,000 Soviet prisoners of war. The prisoners died of hunger and cold, backbreaking labor and medical experiments. Buchenwald was the largest Nazi camp in February 1945: taking into account the branches it housed 112,000 prisoners. An underground antifascist organization operated in Buchenwald and on 11 April 1945 the prisoners staged an armed revolt, thanks to which about 21,000 people were liberated, including 904 children.
Over 260 death camps and mass slaughter sites were set up in Belarus’ territory that the Nazi occupied. Over 1.4 million people died there according to scarcely complete data.