Book excerpt: The "Sonderkommando of "Auschwitz-Birkenau consisted primarily of Jewish prisoners forced by the Germans to facilitate the mass extermination. Though never involved in the killing itself, they were compelled to be "members of staff" of the Nazi death-factory. This book, translated for the first time into English from its original Hebrew, consists of interviews with the very few surviving men who witnessed at first hand the unparalleled horror of the Auschwitz-Birkenau death camp. Some of these men had never spoken of their experiences before.