Brett E. Walden

FORT WALTON BEACH, Fla. — Sgt. 1st Class Brett Eugene Walden achieved a boyhood dream by becoming a Green Beret but it ended with his death in Iraq just seven months before he was supposed to retire from the Army.

The 40-year-old Special Forces soldier, who lived his teenage years in Fort Walton Beach, died Friday when a civilian fuel truck collided with the Humvee he was riding in, according to the Pentagon.

Family members weren’t sure what to say when the young Walden told them of his ambition, recalled his aunt, Eddie Mae Owens, who lives here.

“There’s not a whole lot of Green Berets, so nobody ever dreamed that that’s what he would become,” she said.

But Walden lived long enough to wear that elite badge as a member of the 5th Special Forces Group, based at Fort Campbell, Ky.

Walden was due to retire in February and had long...