Okla. Stat. tit. 44 § 48
Enlisted men discharged from service in the National Guard of this state shall receive a discharge in writing in such form and with such classification as is or shall be prescribed by National Guard regulations, and in time of peace discharges may be given prior to the expiration of terms of enlistment in the following cases:
By sentence of a general court-martial; by direction of the Governor on account of disability; on account of sentence of imprisonment by a civil court whether suspended or not; on account of a bona fide permanent change of residence to another state; and for the purpose of enlisting in regular Army, Air Force, Navy, or Marine Corps, and for such other causes as may be prescribed by National Guard regulations or the Commander in Chief; provided, that an enlisted man who has not returned or accounted for all of the public property for which he is responsible, shall under no circumstances receive an honorable discharge.
Okla. Stat. tit. 44, § 48