Two fallen soldiers buried side by side at Arlington National Cemetery are being remembered in the new book, Brothers Forever. Marine Travis Manion and Navy SEAL Brendan Looney were best friends who made the ultimate sacrifice for their country.

They met at the Naval Academy and became roommates. After joining the Navy SEALs, Looney was deployed to Afghanistan. Manion served in Iraq, where he was killed on April 29, 2007 while fighting to rescue his fellow Marines from danger.

At his funeral, Looney said, “I was lucky enough to room with Travis at the Naval Academy for two years. In a very short time, he became like a brother to me. He was a great friend … I’ll miss him.”

On September 21, 2010, Looney gave his own life with eight others in a helicopter crash.

Looney’s wife requested that the brothers in uniform be buried next to one another, and so they were.

On Memorial Day 2011, President Obama spoke about their story. “The friendship between First Lt. Travis Manion and Lt. Brendan Looney reflects the meaning of Memorial Day. Brotherhood, sacrifice, love of country.”

Now, their story of friendship and country is being told in the new book written by Looney’s father and retired Marine, Tom Manion.

“If you want to honor the fallen, you challenge the living," he said. "And that’s how we live every day is getting out there and making a difference in their honor. They were very modest and they wouldn’t want this story just to be about them. Their story is America’s story."

Find out more about the book, here.