On this day in 1936, the Sachsenhausen concentration camp opened. Sachsenhausen was a model camp used to train SS guards; since it was located close to the Reich capital city, Sachsenhausen held a special status, which was shown when the Concentration Camps Inspectorate moved its headquarters to Sachsenhausen. From 1936 until 1945, over 200,000 people were held prisoner in Sachsenhausen. In the early years, the prisoners were forced to work in SS-owned factories. Beginning in 1938, they had to build bricks to supply the Nazis with materials to build the large structures that the Nazi leadership wanted to build in Berlin. Every day, the SS would march 2,000 prisoners to the Klinkerwerk brickworks, which would happen in front of the residents who remained silent bystanders. The brickwork detail was feared and considered a punishment since the SS would use Klinkerwerk as a location for murder operations. In 1941, it became a subcamp. Tens of thousands of prisoners died in Sachsenhausen due to hunger, disease, forced labor, and systematic murder by the SS. Over 13,000 prisoners, mostly from the Soviet Union, were murdered in the testing of gas chambers. As the Red Army approached, the SS began to liquidate the camp. In these final days, 3000 prisoners were executed while another 13,000 were taken to other concentration camps; the remaining 30,000 were taken on death marches. Thousands died in the process.On April 22, 1945, the Red Army liberated Sachsenhausen. Only 3,000 sick prisoners with nurses and doctors remained in the camp. 300 of those prisoners died after liberation and were buried in Sachsenhausen.