US Code - Chapter 32: Officer strength and distribution in grade

Section 521 Authority to prescribe total strengths of officers on active duty and officer strengths in various categories
Section 522 Repealed.
Section 523 Authorized strengths: commissioned officers on active duty in grades of major, lieutenant colonel, and colonel and Navy grades of lieutenant commander, commander, and captain
Section 524 Renumbered Sec. 12011]
Section 525 Distribution of commissioned officers on active duty in general officer and flag officer grades
Section 526 Authorized strength: general and flag officers on active duty
Section 527 Authority to suspend sections 523, 525, and 526
Section 528 Officers serving in certain intelligence positions: military status; exclusion from distribution and strength limitations; pay and allowances

Enlistments

Personnel

Original appointments of regular officers in grades above warrant officer grades