Subject to the approval of the Department of Finance, the Adjutant General shall appoint and fix the salaries of all clerical, expert, and technical assistants necessary for the proper conduct of his office. In general, the Office of the Adjutant General shall be organized according to general staff doctrine and procedure as set forth by the Department of the Army and the Department of the Air Force regulations where the same are not inconsistent with the laws of the State of California or this code.