Command master chief petty officer (CMDCM)[N 1] is an enlisted rating in the United States Navy and U.S. Coast Guard, as well as the Japan Maritime Self-Defense Force.
[1][2][3] Japan's navy, the Japanese Maritime Self-Defense Force (JMSDF), first established their command master chief petty officer program in 2003, modelling it on that of the U.S.
They advise their respective commander or Commanding Officer, and provide input in the formulation, implementation, and execution of policies concerning morale, welfare, job satisfaction, discipline, utilization, family support, and training of enlisted sailors, as well as providing input and advice in matters affecting mission and operations as required.
They formulate and implement policies concerning morale, welfare, job satisfaction, discipline, utilization and training of navy personnel.
In 2015, the U.S. Navy formally established the rating of command senior chief petty officer (CMDCS),[9] whereas previously it had been a billet.
One commandant-designated CMC is located at each area, each district, both maintenance and logistics commands, headquarters, the Coast Guard Academy, and the Deployable Operations Group.