She was a member of the anti-fascist resistance group that was later called the Red Orchestra by the Abwehr, during the Nazi period.

[2] Together, Hilde and Hans Coppi – who wed on 14 June 1941 – hid persecution victims of the Nazi régime.

She also relayed greetings and any other signs of continued life heard on Radio Moscow from German prisoners of war to their kin.

Hilde was pregnant by this time, later giving birth to the couple's son at the Barnimstrasse women's prison on 27 November.

[6] After the end of the war, her son was raised by her husband's parents, Freda and Robert Coppi, in the garden colony Am Waldessaum.