As early as 1934 they secretly accommodated Eugen Schwebinghaus [de], a close party colleague of Robert Stamm.
[1] From 1942 their Berlin apartment was the work-place and a communications hub for Wilhelm Knöchel, an exceptionally effective communist resistance organiser,[3] whose alias was "Alfred".
[1] Gestapo reports indicated that Charlotte Garske was suspected of being significantly more important to the political work of "Alfred" than her husband.
[3] She acted as a courier, delivering illegal published material to Willi Seng, a communist party instructor and co-ordinator in the economically and politically crucial Ruhr region.
[1] On 9 November 1943 the special "People's Court" sentenced Erich and Charlotte Garske to death.