10 U.S.C. § 14006
For the purpose of chapters 1403 through 1411 of this title, an officer’s years of service in a grade are computed from the officer’s date of rank in grade as determined under section 741(d) of this title.
(Added Pub. L. 103–337, div. A, title XVI, § 1611, , 108 Stat. 2923.)
Section effective , see section 1691(b)(1) of Pub. L. 103–337, set out as a note under section 10001 of this title.