involuntarily board-separated
Defined in 1 dictionary — U.S. Code
United States Code
10 U.S.C. § 1558 — in this section (7 versions over time)
The term “involuntarily board-separated” means separated or retired from an armed force, or transferred to the Retired Reserve or to inactive status in a reserve component, or the Space Force, as a result of a recommendation of a selection board.