Pub. L. 102-484, div. A, tit. IV, subtit. B, sec. 413
RESERVE COMPONENT FORCE STRUCTURE.
SEC. 413. RESERVE COMPONENT FORCE STRUCTURE. (a) Requirement To Prescribe Reserve Component Force Structure.—The Secretary of each military department shall prescribe a force structure allowance for each reserve component under the jurisdiction of the Secretary. Each such force structure allowance for a reserve component— (1) shall be consistent with, but in no case include a number of personnel spaces that is less than, the authorized end strength for that component; and (2) shall be prescribed in accordance with historic service policies. (b) Definition.—For purposes of this section, the term “force structure allowance” means the number and types of units and organizations, and the number of authorized personnel spaces allocated to those units and organizations, in a military force.