Combat Stress Gives Military Pause

May 27, 2009— -- Eleven suspected suicides this year at Fort Campbell, Ky., prompted the military base to put its regular duties on hold today while officials paused for a program on suicide prevention.

The decision comes not long after a separate tragic shooting earlier this month at a Baghdad stress center, where a U.S. soldier was charged with killing five of his peers.

Both are devastating markers that reflect the stress of war -- and young men, like Brendan Schnitzler, 21, and Cedric Brooks, 26, can directly relate.

"When I got back, I knew I felt that the Brendan that left the states had died," said Schnitzler, who served in Iraq as a machine gunner before twice trying to kill himself.

"I turned to alcohol. I was drinking pretty heavy just to pass out at night so I could get some sleep, and I was just miserable. So one night I just said, you know, 'This is all I've got left. I don't want none of it. So it was Jan. 3, 2008. [I] climbed to the roof of my barracks, about a 60-foot fall, and I jumped off the roof."

During a recent visit with ABC News at thePathway Home in Yountville, Calif., Schnitzler also remembered what he was thinking at that moment.

"I really hope this works," he recalled thinking. "I had no intention of getting up off that ground."

Watch "World News with Charles Gibson" TONIGHT at 6:30 p.m. ET for the full report.

Chilling reminders of the toll wars take on troops' mental health are evident today in the events at Fort Campbell.

Even as they battle the enemy around the world, as many as three soldiers try to kill themselves every day. The number of those who have succeeded is higher than it has been in nearly 30 years.

"We are at two to three times the rate today than we were in previous years," said Col. Dallas Homas, chief surgeon with the Army Medical Corps. "It is of grave concern."

"This is a very stressed force," said Army Secretary Pete Geren at a Senate hearing earlier this month.

In the past four years, Army suicides have skyrocketed -- from 67 in 2004 to 143 last year. So far this year, the Army has already tracked 64 potential suicides -- a pace that could bring a new and tragic record.

Brooks, who spent 52 months of the last eight years as a sniper in Iraq and Afghanistan, also tried to commit suicide on two separate occasions once he returned home. He also was with a friend in Iraq just moments after his peer took his own life.

"I say, 'OK, I'll be right back in like five minutes,' walk outside, go get a drink, then come back -- and all of a sudden, you hear a discharge," Brooks recalled. "You think somebody on the compound accidentally discharged a weapon. So I run in to say, 'Hey, I just heard something and --' ... and the wall behind him is completely red."