Manuel Balce Ceneta, AP
Defense Secretary Ash Carter, right, and Joint Chiefs Chairman Gen. Martin Dempsey testify on Capitol Hill in Washington, Wednesday, May 6, 2015. Carter is recommending Adm. John Richardson, head of the Navy's nuclear program, to be the next chief of naval operations, and is nominating Gen. Mark Milley to be the next Army chief of staff.

WASHINGTON — U.S. officials say Defense Secretary Ash Carter is recommending Adm. John Richardson, head of the Navy's nuclear program, to be the next chief of naval operations, and is nominating Gen. Mark Milley to be the next Army chief of staff.

Milley heads U.S. Army Forces Command at Fort Bragg, N.C. Earlier this year he was the officer assigned to review the case of Army Sgt. Bowe Bergdahl, who abandoned his post in Afghanistan and was held captive by the Taliban for five years.

Milley made the decision to charge Bergdahl with desertion and misbehavior before the enemy. He's served multiple tours in Iraq and Afghanistan.

Richardson has served as director of the Navy's nuclear reactors program since November 2012.

The officials weren't authorized to discuss the issue, so spoke anonymously.