Much of the analysis is based on records of Guantánamo hearings for individual detainees, which have been made public since 2006 as a result of a lawsuit by The Associated Press. The Times has posted those documents on its Web site arranged by detainee name.

The analysis shows that about 34 of the remaining detainees were seized in raids in Pakistan that netted three men the government calls major Qaeda operatives: Abu Zubaydah, Ramzi bin al-Shibh and Al Hajj Abdu Ali Sharqawi. Sixteen detainees are accused of some of the most significant terrorist attacks in the last decade, including the 1998 bombings at American Embassies in Kenya and Tanzania, the 2000 attack on the destroyer Cole in Yemen, and the Sept. 11 attacks. Twenty others were called Mr. bin Laden’s bodyguards.

The analysis also shows that 13 of the original 23 detainees who arrived at Guantánamo on Jan. 11, 2002, remain there nearly seven years later. Of the roughly 255 men now being held, more than 60 have been cleared for release or transfer, according to the Pentagon, but remain at Guantánamo because of difficulties negotiating transfer agreements between the United States and other countries.

Two of those still held, government documents show, were seen by Mr. bin Laden as potential Sept. 11 hijackers. The case of Mohammed al-Qahtani, whom the government has labeled a potential “20th hijacker,” has drawn wide notice because he was subjected to interrogation tactics that included sleep deprivation, isolation and being put on a leash and forced to perform dog tricks.

The other detainee deemed a potential hijacker, whose presence at Guantánamo has gone virtually unmentioned in public reports, is a Yemeni called Abu Bara. The 9/11 Commission said he studied flights and airport security and participated in an important planning meeting for the 2001 attack in Malaysia in January 2000.

The Guantánamo list also includes two Saudi brothers, Hassan and Walid bin Attash. The government describes them as something like Qaeda royalty. Military officials said during Guantánamo hearings that their father, imprisoned in Saudi Arabia, was a “close contact of Osama bin Laden” and that his sons were committed jihadists.

Image A detainee at Guantánamo Bay, Cuba, in September. More than 250 detainees remain. Credit... Fred R. Conrad/The New York Times

Walid bin Attash is facing a possible death sentence as a coordinator of the Sept. 11 attacks. Hassan bin Attash was accused of having been involved in planning attacks on American oil tankers and Navy ships.