110 ILCS 105/2

The Governor is hereby authorized and directed to appoint and commission as honorary staff officers of the Illinois National Guard, the officers of the university, college, academy or other educational institution, as follows: The chancellor, president, superintendent or other presiding officer as colonel; the vice-president, principal or other officer second in authority as lieutenant-colonel; the commandant, or officer in charge of the military department, as major, the quartermaster as major, the surgeon as major, the adjutant as captain, the assistant surgeon as captain, and the professors, members of the faculty, as captains.