Now I've found this:
Jul. 14, 2006 | Congress has demanded that Secretary of Defense Donald Rumsfeld hand over a raft of documents to Congress that could substantiate allegations that U.S. forces have tried to break terror suspects by kidnapping and mistreating their family members. Rumsfeld has until 5 p.m. Friday to comply.
It now appears that kidnapping, scarcely covered by the media, and absent in the major military investigations of detainee abuse, may have been systematically employed by U.S. troops. Salon has obtained Army documents that show several cases where U.S. forces abducted terror suspects’ families. After he was thrown in prison, Cpl. Charles Graner, the alleged ringleader at Abu Ghraib, told investigators the military routinely kidnapped family members to force suspects to turn themselves in.
In a hearing before Shays' Government Reform subcommittee last February, [Army Spc. Samuel] Provance testified that the Army had retaliated against him. Provance also made the disturbing allegation that interrogators broke an Iraqi general, Hamid Zabar, by imprisoning and abusing his frail 16-year-old son. Waxman was shocked. "Do you think this practice was repeated with other children?" he asked Provance. "I don't see why it would not have been, sir," Provance replied.