Documentary filmmakers Sebastian Junger (left) and Tim Hetherington had extraordinary access with the men of 2nd Platoon, Battle Company.
The airborne paratroopers moved out by helicopter to a remote Afghan outpost in 2007.
Located in the Korengal Valley, it may have been the most dangerous place on earth.
When the Chinook [helicopter] made a hard right turn into the valley," said Specialist Hijar, "I thought holy s---. We're not ready for this.
next slide will load in 15 secondsSkip AdSkip AdWhen they get off the bird and head up the hill to the combat outpost (COP), the altitude hits and they start sucking wind.
They were told by other soldiers that they would get shot at every day.
And it wasn't long before their first firefight. They responded with helicopter support.
Captain Kearney gives the overview of what they are up against.
next slide will load in 15 secondsSkip AdSkip AdHe points to his map showing the outpost. "No s---, every time [our soldiers] cross the the 62 grid line, they get in contact." Basically, if they walk less than a mile from their base, they are guaranteed to get ambushed.
Kearney: "Right now the road ends at the Korengal outpost, and where the road ends, the Taliban begins."
But they still go out there anyway, day after day.
And the enemy has the upper hand — often firing from above them, and running away at the sound of U.S. helicopters.
For the first few months of the deployment, we'd get rocked hard," said Specialist Pemble. "They'd ambush us from 360 degrees.
next slide will load in 15 secondsSkip AdSkip AdSpecialist Steiner remembers thinking, "Is nobody else fighting anymore? Is every bad guy in my face?"
And their base is no sanctuary. They got fired on (and fire back at the enemy) frequently.
Sometimes the rounds are so close, all they can do is hunker down and cry 'Oh S---!'
Most fights escalate to air strikes — in fact 70 percent of all U.S. bombs in Afghanistan were dropped in the Korengal during this period.
Kearney tries to get the locals on his side.
next slide will load in 15 secondsSkip AdSkip AdHe has a meeting with tribal elders over tea. As usual, they tell him they aren't aware of any Taliban and accuse him of killing innocent people.
But the soldiers keep getting shot at, and they drop more bombs.
Two months after their medic, 'Doc' Restrepo (right), is killed, they adopt a new strategy.
In the middle of the night, they move up a hill to establish a new outpost.
Digging and filling barriers with sand, they name it OP Restrepo after their friend.
next slide will load in 15 secondsSkip AdSkip AdThat day we got in five, seven firefights," said Steiner. "We'd dig, they'd shoot at us. We'd dig some more.
Kearney: "When the boys built that base, the Taliban were completely in shock."
And now the Americans had taken the place where the Taliban often fired from and made it their own.
But fighting off attacks at OP Restrepo was a daily chore.
Often they'd have to use the big .50 cal machine gun to keep them back.
next slide will load in 15 secondsSkip AdSkip AdWith big piles of brass ammo casings often littering the ground around the OP.
And sometimes they'd be so close, the soldiers would pursue them down the mountain.
But it wasn't combat all day. There was downtime.
A popular activity was to get some exercise when they could ...
... But most important was cleaning their weapons for the next engagement.
next slide will load in 15 secondsSkip AdSkip AdReinforcing the defenses of the outpost was also a daily task.
And every so often, a guitar would come out and soldiers could relax.
But there were also the unlucky few who had to burn feces. No plumbing around here.
Captain Kearney's bosses wanted to hear what was happening in the valley.
Kearney is blunt as he points to the southern approach. "This is the war zone," he says.
next slide will load in 15 secondsSkip AdSkip AdKearney: "This is where the majority of the population lives, and probably about 90% of the fighting." He points out a ridge to the left called 'Honcho Hill' and says, "That's the enemy limit of advance. We can't go further south than that."
But Kearney is really proud to direct their attention up the hill. "That's OP Restrepo," he says.
At Restrepo, soldiers would have guard shifts behind the LRAS — the long range advance scout surveillance system — that gave them infrared imagery deep into the valley.
And the patrols continue as they try to meet with locals and find the bad guys.
Most of the time, locals tell them they don't know any Taliban. "Not in this village," is a common answer.
next slide will load in 15 secondsSkip AdSkip AdBut more often, they tell them they can't talk, 'or we will get killed,' one man says.
Frustration is a daily hardship here.
And the kids are the only ones that are more curious of Americans than afraid.
But the biggest operation for Battle Company was yet to come.
Operation: Rock Avalanche would take them somewhere they'd never been, so they had to plan for a big fight.
next slide will load in 15 secondsSkip AdSkip AdThey applied camouflage paint before leaving to give them concealment, and for some — to make them look more badass.
Choppers dropped them off and they were on their feet for the next 3 days. They take fire early on from inside a village.
AH-64 Apache helicopters come in ...
... And pound the area with rockets.
But they learn that they didn't only hit Taliban fighters. They also killed 5 innocent civilians.
next slide will load in 15 secondsSkip AdSkip AdKearney is upset with the failure: "Damn it. I need to be better so that I can do this — so I'm not killing these people."
The soldiers continue with their search and find tons of weapons.
But the next day, they wake up and are told that the Taliban is talking about attacking them soon over their radios.
Kearney monitors his radio and stands by to call in air support.
And then a huge fight erupts on the mountain.
next slide will load in 15 secondsSkip AdSkip AdForcing some to get so low they can't even shoot back. Some are wounded or killed.
They attempt to flank, with one soldier saying, "we need to go over this hill and bum-rush them."
The shooting is intense as soldiers run after the Taliban.
But they pull back and let the attack helicopters come in.
And keep scanning the area for any stragglers.
next slide will load in 15 secondsSkip AdSkip AdAfter Rock Avalanche and the loss of some of their brothers, morale was at a low point. But Kearney tells them to mourn, and then get back out there the next day.
They have reason to celebrate, according to one soldier. "Look at your watch," he says. "2 months and counting down," until they leave Afghanistan.
That doesn't mean the Taliban gives them a break.
And the big guns of the OP continued to fire each day.
Adding to the hundreds of fighters they've already taken out in their 15 months.
next slide will load in 15 secondsSkip AdSkip AdUntil they finally left the Korengal, only to have it abandoned by US forces a few years later.
You've seen how American soldiers do in combat...