CFR›Title 42›Chapter I›Part 21 ContainsSubparts A–CCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 21—COMMISSIONED OFFICERS Subparts A Subpart A—Definitions Section 21.1 B Subpart B—Appointment Sections 21.21–21.58 C Subpart C—Involuntary Child and Spousal Support Allotments Sections 21.70–21.75 Previous 12 Part 12—Telemedicine Flexibilities Next 22 Part 22—Personnel Other Than Commissioned Officers