Ernst Kaltenbrunner
In 1944, Ehrlinger returned to Berlin. On 1 April 1944, he became chief of the Reich Security Main Office (Reichssicherheitshauptamt or RSHA), Department I (Personnel), replacing Bruno Streckenbach. In November 1944 Ehrlinger also became a special delegate from Ernst Kaltenbrunner to SS chief Heinrich Himmler.