On 11 July 1944, on the first attempt on Hitler's life, Klausing went along with Claus Schenk von Stauffenberg as his adjutant to the Obersalzberg ("i.e." the Berghof near Berchtesgaden) and made sure that a car and a plane were standing by, ready to whisk the plotters away to Berlin after the job had been done. The Obersalzberg plan was, however, put off, as was a second attempt on 15 July at the Wolf's Lair near Rastenburg in East Prussia, where Klausing made the same preparations for Stauffenberg.