Neudeck soon began impressing her superiors with her unbending brutality towards the female prisoners, resulting in her promotion to the rank of Blockführerin (Barrack Overseer) in late July 1944.

Former French prisoner Geneviève de Gaulle-Anthonioz commented after the war that she had seen Neudeck "cut the throat of an inmate with the sharp edge of her shovel".

"[4][5] In December 1944, Neudeck was promoted to the rank of Oberaufseherin, and moved to the Uckermark extermination complex subcamp close to Ravensbrück.

[7] In late April 1945, she fled the camp but was later captured[2] and detained in prison while the British Army investigated the allegations against her.

[7] The British court found Neudeck guilty of war crimes and sentenced her to death by hanging.