Ernst Kaltenbrunner
As well as falling under a direct and geographical chain of command, the nature of the work at Auschwitz also had the camp coming under the sphere of the "Reichssicherheitshauptamt", or RSHA. Both Reinhard Heydrich and later Ernst Kaltenbrunner routinely were briefed on activities at Auschwitz through Adolf Eichmann, assigned head of "RSHA Referat IV B4" (RSHA Sub-Department IV-B4), who dealt with supervising the transportation of Jews to Auschwitz. He visited the camp on several occasions.