It was there at Hitler's HQ that Christian met Gerda "Dara" Daranowski, who was working as one of Adolf Hitler's private secretaries. They were married on 2 February 1943 and Gerda Christian took a break from her employment for Hitler. Her work was taken over by Traudl Junge. Christian was promoted to Oberst (colonel) on 1 March 1943. In mid-1943, Gerda Christian returned to Hitler's staff as one of his private secretaries. After the suicide of Generaloberst Hans Jeschonnek, when the latter was replaced by Günther Korten, Christian was appointed to the Luftwaffe Command Staff at Hitler's request. One year later, he was promoted to Generalmajor and made Chef des Luftwaffe-Führungsstabes (Chief of the Luftwaffe Command Staff) at Hitler's request on 1 September 1944.
