They made their sacrifice on the battlefield and now they face physical challenges back here at home. But many wounded warriors have found some new ways they can not only strengthen their bodies, but also stay competitive with each other.
At Walter Reed National Military Medical Center in Bethesda, soldiers who were strong on the battlefield are now rebuilding their bodies and minds. These wounded warriors are learning about athletic options from biking to indoor lacrosse.
"I knew I was gonna lose my leg - there wasn't much of a question," says Justin Lansford, a U.S. Army veteran.
Now Lansford has turned to rowing for rehab, both in and out of the water.
"It was an opportunity for me to channel a lot of that, a lot of that competitiveness in something I could do," Lansford says.
Tyler Jeffries tried scuba diving, something he'd never done growing up in Florida.
"The more you put yourself out there and try new things, the more your realize there is still stuff you can do and still a future for yourself to do things and not be in your room all day depressed about what you can't do," says Jeffries, a U.S. Army veteran.
He'll try kayaking and boxing next, until he can start running next year.
Many of these veterans have set lofty goals - and they're on their way to reaching those goals.