(a) The governor, or adjutant general under the governor’s authority and direction, may transfer to the Texas State Guard Honorary Reserve an officer or enlisted service member of the Texas State Guard who:
(1) is physically disabled;
(2) is at least 60 years of age; or
(3) has served the federal or state military satisfactorily for at least 20 years.
(b) The governor may advance the service member one grade or rank at the time of the transfer into the honorary reserve. For a service member who is not a general officer, the adjutant general may advance the service member one grade or rank at the time of the transfer into the honorary reserve.