(20 ILCS 1815/9) (from Ch. 129, par. 237)
    Sec. 9. The Governor shall make all appointments to commissioned and warrant officer rank in the Illinois State Guard. Commissions or warrants evidencing appointments or promotions shall be signed by the Governor and attested and issued by The Adjutant General, Chief of Staff. Commissions to officers shall read to a certain grade in a designated regiment, separate battalion, staff, corps, department or other unit. Assignment to duty in any headquarters, staff or unit shall be by order of the Governor. The validity of all commissions and warrants shall be subject to acceptance and the execution of the following oath of office: "I do solemnly swear (or affirm) that I will bear true allegiance to the United States and to the State of Illinois; that I will support the constitutions and laws thereof and serve them faithfully; that I will obey the orders of the Commander-in-chief and of such officers as may be placed over me, and the laws, rules, and regulations of the Illinois State Guard. So help me God."
(Source: Laws 1951, p. 1999.)