DURANTE BUENA PARTE de los últimos siete años, Bush y Cheney han estado llevando a cabo operaciones secretas en la Casa Blanca. En ella han involucrado a miles de oficiales del ejército, han escrito miles de cartas privadas y han mantenido miles de reuniones que no han reflejado en sus agendas, mientras mantenían a los medios de comunicación apartados de todo ello:

Their mission: to comfort the families of soldiers who died fighting in Afghanistan and Iraq since the Sept. 11 terrorist attacks and to lift the spirits of those wounded in the service of their country.

On Monday, the president is set to make a more common public trip - with reporters in tow - to Walter Reed Army Medical Center, home to many of the wounded and a symbol of controversy earlier in his presidency over the quality of care the veterans were receiving.

But the size and scope of Mr. Bush's and Mr. Cheney's private endeavors to meet with wounded soliders and families of the fallen far exceed anything that has been witnessed publicly, according to interviews with more than a dozen officials familiar with the effort.

"People say, 'Why would you do that?'" the president said in an Oval Office interview with The Washington Times on Friday. "And the answer is: This is my duty. The president is commander in chief, but the president is often comforter in chief, as well. It is my duty to be - to try to comfort as best as I humanly can a loved one who is in anguish."

Mr. Bush, for instance, has sent personal letters to the families of every one of the more than 4,000 troops who have died in the two wars, an enormous personal effort that consumed hours of his time and escaped public notice. The task, along with meeting family members of troops killed in action, has been so wrenching - balancing the anger, grief and pride of families coping with the loss symbolized by a flag-draped coffin - that the president often leaned on his wife, Laura, for emotional support.

"I lean on the Almighty and Laura," Mr. Bush said in the interview. "She has been very reassuring, very calming."

Mr. Bush also has met privately with more than 500 families of troops killed in action and with more than 950 wounded veterans, according to White House spokesman Carlton Carroll. Many of those meetings were outside the presence of the news media at the White House or at private sessions during official travel stops, officials said.

The first lady said those private visits, many of which she also attended, took a heavy emotional toll, not just on the president, but on her as well.

"It is just so unbelievably emotional to be with the families, for everybody involved. I mean for us and for them and for everyone," she said in a telephone interview with The Times on Saturday. "I'm very aware of how emotional it is and how draining it is for the president and for me, too. Both of us. But I think we do support each other, not by saying anything so much, but just by the comfort of each other's presence, both when we are with the families and then afterward when we are alone."

Mr. Cheney similarly has hosted numerous events, even sneaked away from the White House or his Naval Observatory home to meet troops at hospitals or elsewhere without a hint to the news media.

For instance, Mr. Cheney flew to North Carolina late last month and met with 500 special-operations soldiers for three hours on a Saturday night at a golf resort. The event was so secretive that the local newspaper didn't even learn about it until three days after it happened.

Mr. Cheney and his wife, Lynne, also have hosted more than a half-dozen barbecues at their Naval Observatory home for wounded troops recovering at Bethesda Naval Hospital and Walter Reed and their spouses and children.