We see again that an impetus for the first gassings came not from Berlin but from Slovakia, whose pro-Nazi government was happy to round up able-bodied Jews to be pressed into slavery in the IG Farben synthetic-rubber works at Auschwitz. Then the Slovaks realized they would be stuck with a Jewish remnant unable to provide for itself, so they paid the Nazis to take the elderly, the frail, the children to Auschwitz as well. Killing them seemed the expedient thing to do.
Reading this book is an ordeal -- not through any failure of the author's but because of his success. Rees's research is impeccable and intrepid; among other feats, he has tracked down and interviewed former SS members who actually worked at Auschwitz, most of whom express no remorse. Rees also makes good use of the records that became available only after the collapse of the Soviet Union and its satellites.
These details add up to a precise picture of the death camp -- not only the sadistic kapos, the merciless selections, the industrial-scale killing, but also the perverse love stories, doomed uprisings, weird strokes of luck. Rees tells the bizarre story of the Auschwitz brothel, and details the one successful escape from the camp. He explains why the only hope of survival was a job indoors, and reports that the best jobs were in the warehouses where Jews were compelled to sort and catalogue the stolen possessions of their murdered brethren.
Scrupulous and honest, this book is utterly without illusions. The nearest thing it has to an uplifting story is the successful effort by Danes to save their country's Jews. Even this ends on a sad note in Rees's hands. Why, he wonders, could similar feats not have been accomplished all across Europe?
The answer emerges in the final pages, as Rees recounts stories of Auschwitz survivors returning to their homes months and years and even decades later, only to be greeted with fresh bigotry and new violence. More lives were not saved because human beings found it more convenient to hate. The potted bigotry and ludicrous rantings of tyrants spoke more deeply to them than the exhortations of saints.
It is folly to believe that hatred could be so widespread and so easily activated in 1945 yet be toothless today. Neighbors hacked neighbors to death in Rwanda; mountains of skulls rose in Cambodia; entire classes of people were worked and starved to death in China; even Hitler's brand of bigotry is common currency in much of the world.
Indeed, hate seems to be thriving. As long as it does, Auschwitz is with us.
David Von Drehle is a Washington Post staff writer and the author, most recently, of "Triangle: The Fire That Changed America."