Okla. Stat. tit. 44 § 45
Oath for National Guard Officers. Each commissioned officer, before entering upon the duties of his office, shall take and subscribe to the following oath, or such other oath as may be required by National Guard Regulations:
"I . ........., do solemnly swear that I will support and defend the Constitution of the United States and the Constitution of the State of Oklahoma against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I will obey the orders of the President of the United States and the Governor of the State of Oklahoma; that I make this obligation freely, without any mental reservation or purpose of evasion, and that I will well and faithfully discharge the duties of the office of ......., in the National Guard of the United States and the State of Oklahoma upon which I am about to enter, so help me God."
Okla. Stat. tit. 44, § 45