Kammala jumla mai zuwa: A watan Maris na 1940 Kühl ya yi aiki a Ofishin Jakadancin Poland zuwa Switzerland da Liechtenstein a matsayin ma'aikacin taimako. Bayan mamayewar Jamus da Soviet na Poland da kuma abin da suka biyo baya
A lokacin mulkin mallaka, Ofishin Jakadancin ya kasance mai aminci ga gwamnatin Poland da ke gudun hijira karkashin jagorancin Janar Władysław Sikorski wanda ya yi alkawarin ci gaba da gwagwarmaya da ikon Axis.