When Marines arrived on the scene to assess the number of dead bodies, at least one Marine thought it would be a good time to take pictures for his own keeping.

“I know I had one Marine who was taking pictures just to take pictures and I told him to delete all those pictures,” testified a first lieutenant identified as M. D. Frank.

The documents uncovered by The Times — which include handwritten notes from soldiers, waivers by Marines of their right against self-incrimination, diagrams of where dead women and children were found, and pictures of the site where the Marine was killed by a roadside bomb on the day of the massacre — remain classified.

In a meeting with journalists in October, before the military had been told about the discovery of the documents, the American commander in charge of the logistics of the withdrawal said that files from the bases were either transferred to other parts of the military or incinerated.

“We don’t put official paperwork in the trash,” said the commander, Maj. Gen. Thomas Richardson, at the meeting at the American Embassy in Baghdad.

The documents were piled in military trailers and hauled to the junkyard by an Iraqi contractor who was trying to sell off the surplus from American bases, the junkyard attendant said. The attendant said he had no idea what any of the documents were about, only that they were important to the Americans.

He said that over the course of several weeks he had burned dozens and dozens of binders, turning more untold stories about the war into ash.

“What can we do with them?” the attendant said. “These things are worthless to us, but we understand they are important and it is better to burn them to protect the Americans. If they are leaving, it must mean their work here is done.”