Master chief face
Master chief petty officer.
Master chief petty officer
Naval rank
This article is about the naval military rank. For the Halo character colloquially named after this rank, see Master Chief (Halo).
A master chief petty officer is a senior non-commissioned officer in many navies and coast guards, usually above some grade of petty officer.
United States
Master chief petty officer (MCPO) is the ninth (just below the rank of MCPON) enlisted rank (with pay grade E-9) in the United States Navy and United States Coast Guard, just above Senior Chief Petty Officer (SCPO).
Master chief last name
Master chief petty officers are addressed as "Master Chief (last name)" in colloquial contexts. They constitute the top 1.25% of the enlisted members of the maritime forces.[1]
Prior to 1958, chief petty officer was the highest enlisted rate in both the U.S.
Navy and U.S. Coast Guard. This changed on 20 May 1958 with the passage of Public Law 85-422, the Military Pay Act of 1958, which established two new enlisted pay grades
