To my knowledge, there is no single AR or FM that specifically governs OMLs. They are addressed in several ARs for promotions and schools selections, as well as the Army Noncommissioned Officers Guide (FM 7-22.7).
Army Regulation 601-210 covers Active and Reserve Components Enlistment Army Regulation 601-280 covers Army Rentention Program
25-2
Ar 25-50
AR 340-21, 5 Juy 1985
BBP- Better Business Practices
Army Regulation 690-950
Army Regulation 600-82
Army Regulation 601-210 covers Active and Reserve Components Enlistment Army Regulation 601-280 covers Army Rentention Program
Army Regulation 600-8-101 Covers in and out processing a unit SSG G.
army regulation covers environmental protection and enhancement
It depends which army you mean
It depends which army you mean
25-2
Department of the Army Pamphlet 385-10 Army Safety Program Dated 23 May 2008 The AR (Army Regulation) that covers safety is AR 385-10, The Army Safety Program (29 February 2000)
medical requirements
Ar 25-50
USARC Reg 608-1