Band of brothers

(CBS News) As America prepares to mark Veterans Day tomorrow, we call your attention to a real-life "Band of Brothers." David Martin tells us, despite the wounds they bear from battle, they are determined to make their voices heard:

"Let the onslaught begin anew. I stand ready coldly waiting with a steady hand . . ."

Marine Cpl. Tim Donley reads from a blog he wrote a year ago when he found out he would probably never regain use of his right arm. Both legs had already been taken by a roadside bomb in Afghanistan, so that right arm meant everything.

"I can't salute," he told Martin. "And I can't shake somebody's hand. You feel helpless and hopeless for a little while, and it stings."

One thing he had not lost was his voice.

Leonard Cohen's "Hallelujah" has become Donley's signature number. And he's getting ready to perform it with Roger Waters, of Pink Floyd fame.

Marine Cpl. Tim Donley performs with other wounded warriors at the Stand Up for Heroes concert in Madison Square Garden. CBS News

Marcus Dandrea, another double-amputee, is on bass, and the whole rhythm section is wounded warriors.

Dandrea has been taking lessons since January.

"Here you are, not having taken lessons for a year yet, and you're about to go rehearse with one of the legends of rock and roll," said Martin.

"Right, it's pretty amazing. It's one of the greatest opportunities I've ever had."

"He's really good," laughed Waters. "He's really, really good. He's got a great ear, this kid, and great sense of timing."

It was Waters who had the inspiration to perform with this wounded warrior band, an inspiration which came from the same place his rock and roll anthem "The Wall" came from -- suffering great loss.

He was an infant when his father was killed in World War II. His grandfather had been killed in World War I.

"I grew up with that, with the loss of those two men," he said, "never knowing either of them, really."

Juan Dominguez lost both legs and an arm in Afghanistan. Back in the day, he had played a pretty mean guitar in a heavy metal band. He could never do that again -- but he didn't want to live without music.

And then he met Roger Waters.

"I introduced myself and got talking about music," he told Martin.

Waters recalled, "He said, 'I play the guitar.' And I sort of looked at him and thought, 'This is a stretch. How could he play the guitar?' And then he went, 'Well, not anymore. I used to play the guitar. Now I play the drums.' And I thought, 'Wow, how cool is that?'"

Dominguez said, "I fell in love with drums and kind of haven't looked back."