Section, acts Aug. 10, 1956, ch. 1041, 70A Stat. 312; Sept. 2, 1958, Pub. L. 85–861, § 1(111), 72 Stat. 1491; Nov. 8, 1967, Pub. L. 90–130, § 1(17)(E), 81 Stat. 376, authorized Secretary of the Navy to prescribe number of women officers in line of Navy eligible to hold appointments in each grade above lieutenant (junior grade) and a similar number in Marine Corps eligible to hold appointments in each grade above first lieutenant.