On Himmler's personal orders, the "Fichtenhain" Special Camp was set up by the SS and consisted of a row of wooden barracks that was separated from the surrounding SS area by a fence.
The complex of barracks next to the Isolation Tract housed between 130 and 225 members of the "Iron Guard" and its leader Horia Sima as "prisoners of honour". The SS did not treat them as regular concencration camp inmates and instead allowed them categorically better living conditions. They did not have to perform forced labour and their rations were equal to those of the SS guards.
Despite their fascist and antisemitic ideology, the "Iron Guard" proved to be a risk for the National Socialists. After the failure of an attempted coup by the "Iron Guard" against the Romanian government, Germany agreed to persecute the movement's members in order to maintain the German-Romanian alliance against the Soviet Union.
However, after Romania ended their cooperation on 23 August 1944, the Nazi leadership decided that a group around Sima was to lead a Romanian government in exile under German control. The "legionaries" were meant to leave Buchenwald on 25 August. But just one day prior, the "Fichtenhain" Special Camp was destroyed during an Allied air raid. This also lead to the death of many "legionaries" of the "Iron Guard", limiting the success of the plan.
Today, there are no traces left of the special camp to be seen.