CFR›Title 31›Subtitle A›Part 21›Subpart E ContainsSection 21.500CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart E—Exemptions Sections 21.500 § 21.500 Secretary of Defense. Previous D Subpart D—Penalties and Enforcement Next F Subpart F—Agency Reports