# § 9151. Commissioned officer grades
The commissioned grades in the Regular Air Force and in the Space Force are:
**(1)** Major general.
**(2)** Brigadier general.
**(3)** Colonel.
**(4)** Lieutenant colonel.
**(5)** Major.
**(6)** Captain.
**(7)** First lieutenant.
**(8)** Second lieutenant.
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**Source Credit**: (Aug. 10, 1956, ch. 1041, 70A Stat. 507, § 8281; renumbered § 9151, Pub. L. 115–232, div. A, title VIII, § 806(b)(3), Aug. 13, 2018, 132 Stat. 1832; Pub. L. 118–31, div. A, title XVII, § 1741(a)(1), Dec. 22, 2023, 137 Stat. 679.)
| Revised section | Source (U.S. Code) | Source (Statutes at Large) |
| --- | --- | --- |
| 8281 | 10:506(a) (last 24 words). | Aug. 7, 1947, ch. 512, § 502(a) (last 24 words), 61 Stat. 884. |
## Editorial Notes
### Amendments
2023— inserted “and in the Space Force” after “in the Regular Air Force” in introductory provisions.
2018— renumbered as this section.
## Statutory Notes and Related Subsidiaries
### Effective Date of 2018 Amendment
Amendment by effective , with provision for the coordination of amendments and special rule for certain redesignations, see , set out as a note preceding .