JOINT BASE BALAD, Iraq — In words etched in stone, painted on concrete barriers, scribbled on hospital walls with magic markers, American troops in Iraq have followed a tradition as old as war itself: honoring their dead.

Now, as the United States prepares to dramatically decrease its military presence in Iraq this summer, American commanders are trying to decide what to do with the vast collection of plaques, street signs and painted concrete barriers dedicated to the men and women who shed their blood in this desert country.

In the Vietnam War, units brought home their memorabilia and memorials when they rotated out of the country. When the U.S. closed down bases around Germany at the end of the Cold War, the memorabilia was also preserved.

Now, it's Iraq's turn. But preserving some of the memorials could prove a difficult task.

At Forward Operating Base Warrior in Kirkuk, a long row of 22 concrete blast barriers painted black greets visitors at a helicopter landing pad. On it, volunteers last year painted the names of almost all the 4,400 U.S. service members who died in Iraq — a piece of craftmanship that evokes the spirit of the Vietnam Memorial in Washington in its honest simplicity.

"I tried several times to walk down this wall and read every name, to say it in my head. It really makes an impact, and it's very hard to do," said Sgt. Kevin McCulley. "There's over 4,000 names on this wall, fathers, sons, daughters, wives. Everyone on this wall has a family."

McCulley was a combat medic during 2006 and 2007, a period that included the troop surge and the highest U.S. casualties of the war. His boots crunch softly on the gravel as he walks along the wall, picking out names of people he knew.

First Lt. Ashley Henderson Huff, of Belle Mead, N.J., who was killed by a suicide bomber in a car in Mosul in 2006. McCulley rode with the black body bag back to the base, one hand resting on her as he prayed for a woman he met only in death.

Since it was made, troops at the base have taken it on themselves to take care of the memorial. U.S. Navy Yeoman 1st Class Gloria Hill has been coming in her off hours with a friend to pull up weeds in front of the barriers, known as T-walls.

"When I look at this wall, I just think that those are someone's kids," she said. "They should be honored. They lost their life."

T-walls tend to crumble or crack in transport, so it's unlikely the memorial at FOB Warrior will be shipped back to the United States.

The memorial at the hospital at Joint Operating Base Balad will pose another challenge. Thousands of wounded American serviceman came through here to be flown out to treatment in Germany — and in the "Heroes Lounge," they were encouraged to write their feelings on the walls.

"2 Iraq tours, 2 Happy Hospital Visits!" wrote Spc. Schamach. The words "Make that 3" were scribbled in later below.

These messages scribbled by the wounded are often the first step in recovery, said Lt. Col. Connie Day, deputy commander of the hospital.

"Some of them go through every emotion possible. You see denial, you see anger, certainly you see sadness. But it's all there, and I think it's all part of the healing process."

High-resolution photographs of the walls will be submitted to a museum — possibly the U.S. Air Force Museum in Ohio or the museum at Walter Reed Hospital in Bethesda, Md. There's even been talk of trying to get the wall or the photos into the Smithsonian.

In April, the military ordered all units to catalogue and collect their memorials as bases close down. The plan is to eventually ship them back to the U.S.