The total number of evacuations is unknown as Reichsdienststelle KLV documents were destroyed at the end of the war but Otto Würschinger, a senior official in the Hitler Youth, wrote that by 1943 the total operation comprised about 3 million children and young people, including 1 million in KLV camps.[6][11] Postwar estimates frequently cite the figure of 2.8 million evacuations in total,[12][13] although one estimate puts the figure as high as 5 million.[14]