Non-commissioned officer

A non-commissioned officer , usually abbreviated as NCO, and occasionally called "noncom"; is an enlisted member of the UNSC Defence Forces who has been given leadership authority by commissioned officers.

UNSC Navy NCO Ranks (From lowest to highest pay grades):

• Petty Officer Third Class
• Petty Officer Second Class
• Petty Officer First Class
• Chief Petty Officer
• Senior Chief Petty Officer
• Master Chief Petty Officer
• Command Master Chief Petty Officer
• Master Chief Petty Officer of the Navy

UNSC Marine Corps NCO Ranks (From lowest to highest pay grades):

• Corporal
• Sergeant
• Staff Sergeant
• Gunnery Sergeant
• Master Sergeant/First Sergeant
• Master Gunnery Sergeant/Sergeant Major
• Sergeant Major of the Marine Corps

(Presumed) UNSC Army NCO Ranks (From lowest to highest pay grades):

• Corporal
• Sergeant
• Staff Sergeant
• Sergeant First Class
• Master Sergeant/First Sergeant
• Sergeant Major
• Command Sergeant Major