Accordingly, the unit name was changed to Sonderkommando Dirlewanger ("Special Unit Dirlewanger"). As the unit strength grew, it was placed under the command of the SS-Totenkopfverbände (the formation responsible for the administration of the concentration camps) and redesignated as the SS-Sonderbataillon Dirlewanger.[2] In January 1942, to rebuild its strength, the unit was authorised to recruit Russian and Ukrainian volunteers.