A hearty “oorah” to the 20th senior enlisted Marine. Sgt. Maj. Carlos A. Ruiz assumed responsibility as sergeant major of the Marine Corps from Sgt. Maj. Troy E. Black, who had been in the ...

Sgt. Maj. of the Marine Corps Troy Black, the top enlisted Marine, will become the Pentagon’s highest ranking enlisted service member, the Defense Department announced Friday. Black, a 35-year ...