 Nenzira yakafanana, Jäckel akashandisa hurukuro dzaHimmler dzePosen dza1943 nedzimwewo mashoko ake muna 1944 achinongedzera kukurayira kunobva kumukuru mukuru asingazivikanwi nezita seuchapupu hwokuti Hitler akanga arayira Kuparadzwa kwavaJudha. Nenzira imwe cheteyo, Jäckel akashandisa murayiro waHitler waMarch 13, 1941, achiraira kuti Einsatzgruppen idzorerwe nokuda kweOperation Barbarossa, seuchapupu hwokubatanidzwa kwaFührer muHolocaust. Jäckel akataurawo nezvekupinda mubhuku raJoseph Goebbels musi wa27 Kurume 1942 achitaura kuti chiporofita chaFührer cha1939 chaive chichiitika sechiratidzo chekuti Hitler akaraira Kuparadzwa kwevanhu, uye akapomera Irving kusatendeseka mukuti pakanga pasina chiratidzo mubhuku raGoebbels rekuti Hitler aiziva nezveHolocaust. Pakupedzisira, Jäckel akacherekedza nongedzero dzenguva dzose kuuporofita muhurukuro dzaHitler dzenguva yehondo sechiratidzo chokuti Hitler akanga arayira Kuparadzwa kwavaJudha, nokudaro achiramba kutaura kwaIrving kwokuti Hitler akanga asingazivi nezveMhinduro Yokupedzisira. 