Michael P. Barrett Sgt. Major of the Marine Corps Micheal Barrett 18th Sergeant Major of the Marine Corps Sgt. Major of the Marine Corps Micheal Barrett "Sergeant Major Ronald L. Green, USMC" Biography Sergeant Major of the Marine Corps Ron Green «Sergeant Major of the Marine Corps» Sergeant Major of the Marine Corps Ron Green Sgt. Major of the Marine Corps Micheal Barrett "Sergeant Major Ronald L. Green, USMC" 18th Sergeant Major of the Marine Corps Sgt. Maj. of the Marine Corps Micheal P. Barrett «Sergeant Major of the Marine Corps» "Sergeant Major Ronald L. Green, USMC" 18th Sergeant Major of the Marine Corps Sgt. Maj. of the Marine Corps Micheal P. Barrett "Sergeant Major Ronald L. Green, USMC"