An Iraqi who was told he would be electrocuted if he fell off the box.

In the era of Saddam Hussein, Abu Ghraib, twenty miles west of Baghdad, was one of the world’s most notorious prisons, with torture, weekly executions, and vile living conditions. As many as fifty thousand men and women—no accurate count is possible—were jammed into Abu Ghraib at one time, in twelve-by-twelve-foot cells that were little more than human holding pits.

In the looting that followed the regime’s collapse, last April, the huge prison complex, by then deserted, was stripped of everything that could be removed, including doors, windows, and bricks. The coalition authorities had the floors tiled, cells cleaned and repaired, and toilets, showers, and a new medical center added. Abu Ghraib was now a U.S. military prison. Most of the prisoners, however—by the fall there were several thousand, including women and teen-agers—were civilians, many of whom had been picked up in random military sweeps and at highway checkpoints. They fell into three loosely defined categories: common criminals; security detainees suspected of “crimes against the coalition”; and a small number of suspected “high-value” leaders of the insurgency against the coalition forces.

Last June, Janis Karpinski, an Army reserve brigadier general, was named commander of the 800th Military Police Brigade and put in charge of military prisons in Iraq. General Karpinski, the only female commander in the war zone, was an experienced operations and intelligence officer who had served with the Special Forces and in the 1991 Gulf War, but she had never run a prison system. Now she was in charge of three large jails, eight battalions, and thirty-four hundred Army reservists, most of whom, like her, had no training in handling prisoners.

General Karpinski, who had wanted to be a soldier since she was five, is a business consultant in civilian life, and was enthusiastic about her new job. In an interview last December with the St. Petersburg Times, she said that, for many of the Iraqi inmates at Abu Ghraib, “living conditions now are better in prison than at home. At one point we were concerned that they wouldn’t want to leave.”

A month later, General Karpinski was formally admonished and quietly suspended, and a major investigation into the Army’s prison system, authorized by Lieutenant General Ricardo S. Sanchez, the senior commander in Iraq, was under way. A fifty-three-page report, obtained by The New Yorker, written by Major General Antonio M. Taguba and not meant for public release, was completed in late February. Its conclusions about the institutional failures of the Army prison system were devastating. Specifically, Taguba found that between October and December of 2003 there were numerous instances of “sadistic, blatant, and wanton criminal abuses” at Abu Ghraib. This systematic and illegal abuse of detainees, Taguba reported, was perpetrated by soldiers of the 372nd Military Police Company, and also by members of the American intelligence community. (The 372nd was attached to the 320th M.P. Battalion, which reported to Karpinski’s brigade headquarters.) Taguba’s report listed some of the wrongdoing:

Breaking chemical lights and pouring the phosphoric liquid on detainees; pouring cold water on naked detainees; beating detainees with a broom handle and a chair; threatening male detainees with rape; allowing a military police guard to stitch the wound of a detainee who was injured after being slammed against the wall in his cell; sodomizing a detainee with a chemical light and perhaps a broom stick, and using military working dogs to frighten and intimidate detainees with threats of attack, and in one instance actually biting a detainee.

There was stunning evidence to support the allegations, Taguba added—“detailed witness statements and the discovery of extremely graphic photographic evidence.” Photographs and videos taken by the soldiers as the abuses were happening were not included in his report, Taguba said, because of their “extremely sensitive nature.”

The photographs—several of which were broadcast on CBS’s “60 Minutes 2” last week—show leering G.I.s taunting naked Iraqi prisoners who are forced to assume humiliating poses. Six suspects—Staff Sergeant Ivan L. Frederick II, known as Chip, who was the senior enlisted man; Specialist Charles A. Graner; Sergeant Javal Davis; Specialist Megan Ambuhl; Specialist Sabrina Harman; and Private Jeremy Sivits—are now facing prosecution in Iraq, on charges that include conspiracy, dereliction of duty, cruelty toward prisoners, maltreatment, assault, and indecent acts. A seventh suspect, Private Lynndie England, was reassigned to Fort Bragg, North Carolina, after becoming pregnant.

The photographs tell it all. In one, Private England, a cigarette dangling from her mouth, is giving a jaunty thumbs-up sign and pointing at the genitals of a young Iraqi, who is naked except for a sandbag over his head, as he masturbates. Three other hooded and naked Iraqi prisoners are shown, hands reflexively crossed over their genitals. A fifth prisoner has his hands at his sides. In another, England stands arm in arm with Specialist Graner; both are grinning and giving the thumbs-up behind a cluster of perhaps seven naked Iraqis, knees bent, piled clumsily on top of each other in a pyramid. There is another photograph of a cluster of naked prisoners, again piled in a pyramid. Near them stands Graner, smiling, his arms crossed; a woman soldier stands in front of him, bending over, and she, too, is smiling. Then, there is another cluster of hooded bodies, with a female soldier standing in front, taking photographs. Yet another photograph shows a kneeling, naked, unhooded male prisoner, head momentarily turned away from the camera, posed to make it appear that he is performing oral sex on another male prisoner, who is naked and hooded.

Such dehumanization is unacceptable in any culture, but it is especially so in the Arab world. Homosexual acts are against Islamic law and it is humiliating for men to be naked in front of other men, Bernard Haykel, a professor of Middle Eastern studies at New York University, explained. “Being put on top of each other and forced to masturbate, being naked in front of each other—it’s all a form of torture,” Haykel said.

Two Iraqi faces that do appear in the photographs are those of dead men. There is the battered face of prisoner No. 153399, and the bloodied body of another prisoner, wrapped in cellophane and packed in ice. There is a photograph of an empty room, splattered with blood.