(A) Commissioned and warrant officers in the Ohio national guard shall be discharged by the adjutant general upon either of the following:

1. (1) The officer's resignation;
2. (2) Approval of a board's recommendation for withdrawal of federal recognition by the chief of the national guard bureau.

(B) An officer also may be discharged under any of the following circumstances:

1. (1) Pursuant to other federal regulations;
2. (2) If absent without leave for three months, upon recommendation of an efficiency board;
3. (3) Pursuant to sentence by court-martial;
4. (4) If the officer has been convicted of a crime classified as a felony as described in division (D) or (E) of section 2901.02 of the Revised Code.