Part 1630 - CLASSIFICATION RULES
- Section 1630.2 - Classes
- Section 1630.10 - Class 1-A: Available for unrestricted military service
- Section 1630.11 - Class 1-A-0: Conscientious objector available for noncombatant military service only
- Section 1630.12 - Class 1-C: Member of the Armed Forces of the United States, the National Oceanic and Atmospheric Administration or the Public Health Service
- Section 1630.13 - Class 1-D-D: Deferment for certain members of a reserve component or student taking military training
- Section 1630.14 - Class 1-D-E: Exemption of certain members of a reserve component or student taking military training
- Section 1630.15 - Class 1-H: Registrant not subject to processing for induction
- Section 1630.16 - Class 1-O: Conscientious objector to all military service
- Section 1630.17 - Class 1-O-S: Conscientious objector to all military service (separated)
- Section 1630.18 - Class 1-W: Conscientious objector ordered to perform alternative service
- Section 1630.26 - Class 2-D: Registrant deferred because of study preparing for the ministry
- Section 1630.30 - Class 3-A: Registrant deferred because of hardship to dependents
- Section 1630.31 - Class 3-A-S: Registrant deferred because of hardship to dependents (separated)
- Section 1630.40 - Class 4-A: Registrant who has completed military service
- Section 1630.41 - Class 4-B: Official deferred by law
- Section 1630.42 - Class 4-C: Alien or dual national
- Section 1630.43 - Class 4-D: Minister of religion
- Section 1630.44 - Class 4-F: Registrant not acceptable for military service
- Section 1630.45 - Class 4-G: Registrant exempted from service because of the death of his parent or sibling while serving in the Armed Forces or whose parent or sibling is in a captured or missing in action status
- Section 1630.46 - Class 4-T: Treaty alien
- Section 1630.47 - Class 4-W: Registrant who has completed alternative service in lieu of induction
- Section 1630.48 - Class 4-A-A: Registrant who has performed military service for a foreign nation