On October 7, 1942, Mandel was assigned to the Auschwitz II Birkenau camp in Poland where she became SS Lagerführerin, a female commandant under (male) SS Kommandant Rudolf Höß. As a woman she could never outrank a man, but her control over both female prisoners and her female subordinates was absolute. The only man Mandel reported to was the commandant. She controlled all the female Auschwitz camps and female subcamps including at Hindenburg, Lichtenwerden, Budy and Rajsko.
Mandel took a liking to Irma Grese, whom she promoted to head of the Hungarian women's camp at Birkenau. According to some accounts, Mandel often stood at the gate into Birkenau waiting for an inmate to turn and look at her: any who did were taken out of the lines and never heard from again. In the Auschwitz camps Mandel was known as "The Beast", and for the next two years she participated in selections for death and other documented abuses. She reportedly often chose so-called "pet" Jews for herself, keeping them from the gas chamber for a time until she tired of them, then sending them to their deaths. Mandel is also said to have enjoyed selecting children to be killed. She created the Women's Orchestra of Auschwitz to accompany roll calls, executions, selections, and transports.
She signed orders sending an estimated half a million women and children to their deaths in the gas chambers at Auschwitz I and II.
Brown, D. P.: The Camp Women: The Female Auxiliaries Who Assisted the SS in Running the Nazi Concentration Camp System
I somehow doubt this book actually contained the copy of these orders. Either way it would be nice to see them if anyone knows about it.