sentences:  Following the arrival of Night and Fog prisoners, the political section and "detention and security" camp were closed down.Hinzert remained mainly autonomous until November 21, 1944, when it was administratively linked to the Buchenwald concentration camp.The camp was partially destroyed by an air raid on February 22, 1945, but remained in operation until March 3 of the same year when many of the surviving prisoners were sent on a death march to upper Hessen, others having been transferred to the Buchenwald concentration camp.