(Image Credit: ABC News)

Halfway around the world and one day after ABC News' Jake Tapper welcomed his son Jack into the world, eight American sons were lost in one of the deadliest battles for U.S. forces in Afghanistan.

On Oct. 3, 2009, at a remote outpost positioned at the bottom of three steep mountains, 400 Taliban fighters attacked 53 U.S. troops.

"In the haze of my wife's recovery room, I saw this TV report about eight other sons being taken from this planet and the coverage was 'Why would anyone put an outpost there?'" Tapper said on "Good Morning America" today.

Book Excerpt: 'The Outpost: An Untold Story of American Valor'

Over the next two years, the senior White House correspondent for ABC News made it his mission to get answers about remote Outpost Keating and the often reckless commanders who made life-or-death decisions, according to a statement from the book's publisher. Over the course of his journey, Tapper traveled to Afghanistan and interviewed more than 225 people who played roles in the war at home and abroad.

"What was incredible that I found was the decisions made by [leaders] would directly affect the four dozen guys at the bottom of this outpost," Tapper said. "If those troops did not have the manpower they needed or the helicopters they needed, they would die."

Over the course of his research, Tapper uncovered incredible stories of heroism from the men who bravely served in the outpost, which he likened to the "bottom of a fishbowl."

Grateful for having their stories told, on Saturday, the soldiers from Combat Outpost Keating presented Tapper with one of the last American flags that flew over the remote post.

"The Outpost: An Untold Story of American Valor" will be released on Nov. 13 by Little, Brown and Company.