Class 1:
1-A: Available for military service
1-AO: Conscientious objector available for noncombatant military service only.
1-C: Member of the Armed Forces of the U.S., the Coast Geodetic Survey, or the Public Health Service taking military training (including ROTC); and accepted aviation cadet applicants.
1-H: Holding status; not currently subject to processing for induction.
1-O: Conscientious objector available for civilian work, contributing to the maintenance of the national health, safety, or interest.
1-S: Student deferred by law until graduation from high school, or attainment of age of twenty, or until the end of his academic year at a college or university.
1-W: Conscientious objector performing civilian work contributing to the maintenance of the national health, safety, or interest, or who has completed such work.
1-Y: Registrant qualified for military service only in time of war or national emergency (subject to rechecking when manpower needs increase)
Class II:
2-A: Occupational deferment other than agricultural and student.
2-C: Agricultural deferment.
2-S: Student deferment, granted only upon application to continuing college students.
Class III:
3-A: Extreme hardship deferment, or registrant with a child or children.
Class IV:
4-A: Registrant with sufficient prior military service or who is a sole surviving son of a parent killed in combat.
4-B: Official, deferred by law.
4-C: Alien, not currently liable for military service.
4-D: Minister of religion or divinity student.
4-F: Registrant not qualified for any military service (permanent exemption)
Class V:
5-A: Registrant is over the age of liability for military service.
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