On the back of the registry office cards from Buchenwald, there was space to list the labor details to which the prisoner was assigned. The longer the war lasted, the more the German Reich was dependent on the labor of concentration camp prisoners. The registry office cards note the number of the labor detail and the day on which the work began. According to this card, Walter Schramm worked in the quarry (53), spent a few days on barrack room duty (64) and was then put to work as a woodcutter (57). A list of external Buchenwald labor details from 1939/1940 can be found here. The labor detail entries on the registry office card ended in March 1942. From this point on, a separate labor assignment card file was kept in Buchenwald for this purpose.