Subcamps, officially Arbeitslager der Waffen-SS, were outlying detention centres (Haftstätten) that came under the command of a main concentration camp run by the SS in Nazi Germany and German-occupied Europe. The Nazis distinguished between the main camps and the subcamps subordinated to them. Survival conditions in the subcamps were, in many cases, poorer for the prisoners than those in the main camps.
The Außenkommando "Unter den Eichen" in Wiesbaden was the site of a subcamp of the SS-Sonderlager Hinzert in which 100 political prisoners performed forced labor.