By: Jake Taper, CNN

It was a devastating Taliban attack, launched on an eastern Afghanistan outpost positioned so poorly it was nearly indefensible. Combat Outpost Keating was tucked in a valley surrounded by towering mountains.

On October 3, 2009, 300 insurgents used the high ground to stage an overwhelming assault on just 53 U.S. troops.

"Just every kind of weapon they could get their hands on they were throwing at us, and we hadn't seen that before," said Spc. Tom Rasmussen.

Eight men died, but there were heart stopping heroics to defend the base.

Staff Sgt Clint Romesha was already awarded the Medal of Honor, the nation's highest honor for his bravery in the face of overwhelming odds during the battle.

Now there will be a second White House ceremony, this time to award the Medal of Honor to Sgt. Ty Carter, a member of B troop, nicknamed the Bastards.

The White House announced on Friday that President Barack Obama would bestow the award for conspicuous gallantry on August 26.

The morning of the attack, Carter had been risking his life running ammunition to troops, when a sniper pinned down him and four others in a Humvee.

The vehicle's roof-mounted weapon was destroyed by a rocket propelled grenade and the men were sitting ducks.

"They were totally ineffective in that position. They had no more ammo left, they were getting hit from every which way," said Romesha.

Sgt. Josh Hardt led two other soldiers to try and shield the trapped comrades with their own Humvee, but it was a suicide mission. Hardt and Spc. Chris Griffen were killed in the attempt.

Bad went to worse, rounds penetrated the Humvee and the enemy was now inside the base. The five men trapped decided they need to get out of there.

Three tried to make a run for it while Carter and Sgt. Brad Larson provided cover.

Enemy fire killed Sgt. Justin Gallegos. Spc. Stephan Mace was badly wounded, lying trapped in open ground.

Carter sprang into action, running out while insurgents were still firing rounds at them, rescuing Mace, and bringing him back to the Humvee.

But they needed to get Mace help, and Carter once again braved the bullets and ran and retrieved Gallegos's radio.

"Is anyone still alive?" they radioed.

A response - "What's going on?"

"We got Mace. Mace is pretty jacked up. We need to get him to the aid station," Larson said.

The men of 3-61 Cav hatched a plan to unload everything they had into the enemy positions. With that cover, Carter and Larson carried Mace on a stretcher, and the three made their escape.

The battle continued until dusk. Before dawn, eight of the men from Black Knight Troop had been killed.

But 45 U.S. troops survived.

But Mace was not one of them.

President Barack Obama mentioned some lessons from Combat Outpost Keating in his remarks about the valor of Clint Romesha.