(3)A person who desires to be transferred to another unit shall submit his application in writing to his Commanding Officer and in such application shall state reasons for desiring transfer and the unit to which he desires to be transferred. Thereupon the transfer shall be effected in the case of an enrolled person by mutual agreement between his commanding Officer and the Commanding Officer of the unit to which he desires to be transferred, and in the case of an officer by order of the prescribed authority.
