Michigan Compiled Laws, Chapter 32. Military Establishment § 32.1141

Sec. 141. (1) The moral character, capacity, and general fitness for service of an officer or warrant officer of the state military forces not in the service of the United States may be determined by an efficiency board detailed on orders of the governor of 3 commissioned officers, senior in rank to the officer whose fitness for service is under inquiry. If the findings of the board are unfavorable concerning the officer, and if approved by the governor, the officer shall be discharged. However, the officer ordered to appear before an efficiency board as provided in this section, before the day the efficiency board convenes to consider his or her case, may demand that a court of inquiry, as provided by section 135,  1 be substituted for the efficiency board. If pursuant to the demand a court of inquiry makes a finding adverse to the officer whose moral character, capacity, and general fitness for service are under investigation, and the finding is approved by the governor, the officer against whom the adverse finding is made, shall be discharged.

(2) The procedural and other rules applicable to courts of inquiry equally shall apply to efficiency boards. The officer whose moral character, capacity, and general fitness for service are under investigation shall have a right to counsel in the proceedings provided for in this section.