While interned at Buchenwald, Sima was faced with the dissent of several groups of Legionnaires who distanced themselves from his policies, stating that they did not approve of the way in which he had run the country and the movement, and who began to appeal to the German supervisors for distinctions to be made in their case. Constantin Papanace, a leading Legionary figure who had served as the undersecretary of the State Department of Finance under the National Legionary State, would later describe Sima as a "terrorist", noting that he " advantage of and abused... his connections", and that Sima possessed "non-discipline... a dangerous dilettantism, not to mention infantilism." Legionnaires increasingly began to blame Sima's leadership of the Iron Guard for the death of Codreanu, citing his previous actions as commander in 1938 as "terroristic" and "tumultuous". This controversy was to enforce the split which is still present in the political legacy of the Iron Guard. By 1943, the Iron Guard - now in exile in Rostock, Germany - had split into at least three distinct groups with separate leadership, not including the Legionnaires who considered Sima their legitimate leader. Sima was transferred to Sachsenhausen-Oranienburg in April 1943, where he would be detained in a prison cell until August 1944.