The military has so far provided only an incomplete timeline of the events. But it appears that at least one case occurred, but was not reported, while an independent fact-finding team was investigating the scope of detainee abuses worldwide for Secretary of Defense Donald Rumsfeld.

In that case, a private first class at the Camp Delta prison threw a cleaning solvent on a detainee, left the island on a regular rotation and was already at Fort Dix, N.J., when he was brought back to face discipline, said the camp's superintendent, Command Sgt. Maj. Anthony Mendez.

The soldier was demoted to private in June, reassigned to new duties and fined $300. His company commander was given a letter of reprimand ''for failing to properly investigate the incident,'' said Lt. Col. Leon Sumpter, spokesman for detainee operations at Guantanamo Bay.

In the other case, a sergeant was busted down to specialist last month, reassigned to new duties and fined $500 for slugging a captive who spit on him and tried to bite him. Army Col. Brice Gyurisko, the Camp Delta warden, said the sergeant gave a captive ''a fat lip'' in a struggle to subdue him, exceeding ''appropriate levels of force.''

The military has yet to give the dates of the attacks or the rank of the company commander, but he is believed to be the highest-ranking soldier here implicated in a total of 10 disclosed abuse cases.

The military disclosed the cases in the same week that a Sudanese captive alleged in a lawsuit that he was subjected to harsh abuse at Guantanamo, including sexual humiliation and brutal interrogation techniques.

What is unique about the allegations in the suit - filed Tuesday in U.S. District Court in Washington by Ibrahim al Qosi, 44 - is that he was held for four months in isolation and had contact only with his Air Force lawyer and guards, meaning he could not have been imitating the reports of abuses that arose out of the Abu Ghraib prison in Iraq.

In the suit, he asserts that female interrogators rubbed their bodies suggestively against detainees, that U.S. soldiers or interrogators here performed sex acts in front of prisoners and displayed hard-core pornography in an interrogation room.

Qosi also asserts that there was a Middle Eastern political theme to the abuse. He said detainees were strapped to an interrogation room floor and wrapped in an Israeli flag, were subjected to ''constant pounding of deafening music,'' and were threatened with transfer to Egypt or Jordan, ''well-known in the region for their grotesque treatment of prisoners.''

Commanders here denied that an Israeli flag was ever used during interrogations and said no such detainee abuse has occurred.

A senior interrogator who briefed reporters said such behavior did not occur during the six months he has served here, or during the previous six months, because he was knowledgeable about those interrogation activities as well.

''This is not Abu Ghraib,'' he said, citing intense outside oversight of interrogators at this showcase prison on the base known in military jargon as Gitmo.

''Gitmo is a success story, and success is not sexy.''