(a) Officers first becoming members before September 8, 1980Each officer on the retired list who first became a member of a uniformed service before September 8, 1980, shall receive retired pay at the rate determined by multiplying—
The retired pay so computed may not exceed 75 percent of the retired pay base.
(b) Officers first becoming members on or after September 8, 1980Each officer on the retired list who first became a member of a uniformed service on or after September 8, 1980, shall receive retired pay at the rate determined by multiplying—
(c) Treatment of full and fractional parts of months in computing years of service
(Pub. L. 107–372, title II, § 245, Dec. 19, 2002, 116 Stat. 3089; Pub. L. 114–92, div. A, title VI, § 631(c)(3), Nov. 25, 2015, 129 Stat. 844.)