PYEONGTAEK, South Korea — Remains believed to be those of 55 American servicemen were flown out of North Korea on Friday, the first visible result of President Trump’s efforts to bring the American war dead home 65 years after the end of combat in the Korean War.

“We are encouraged by North Korea’s actions and the momentum for positive change,” the White House said in announcing the handover.

An American Air Force C-17 Globemaster cargo plane carrying the remains landed later at Osan Air Base south of Seoul, the South Korean capital. Hundreds of American service members as well as a military honor guard lined up on the tarmac to mark the return of the fallen troops.

As the honor guard and the troops stood at attention, 55 small coffins containing the remains were individually carried out of the plane by dress-uniformed soldiers and loaded into six vans. Each of the boxes was wrapped with the United Nations flag, the flag that American troops fought under in the Korean War.