Vietnam Draft Exemptions: Who Was Deferred and Why

Vietnam draft exemptions and deferments were the classifications the Selective Service System used to delay or entirely excuse a registered man from military service between 1964 and 1973. Grounds ranged from college enrollment and fatherhood to medical unfitness, conscientious objection, ordination as a minister, and work in occupations the government considered essential. Of roughly 27 million draft-eligible men in that period, about 2.2 million were actually drafted,¹ and only about 8 percent of eligible men served at all.² The gap between those two numbers is the story of the classification system.

How a Registrant Got Out of 1-A

Every man who registered started in classification 1-A: available for military service. To move out of 1-A, a registrant had to file a claim with his local Selective Service board after receiving an induction order. The claim paused induction until the board processed it, and an unfavorable decision could be appealed to a Selective Service Appeal Board.³

Nothing was automatic. A man with a legitimate claim who did not file it, or who filed it poorly, could still be inducted. That single feature of the system — the burden was on the registrant to know the categories, gather the documentation, and press the case — shaped who ended up in Vietnam as much as the categories themselves did.

Student Deferments (II-S)

The II-S classification deferred men enrolled in college. It only postponed liability rather than erasing it, but the postponement was often enough: the draft called younger men first, so a man who kept a deferment until age 26 was effectively past the reach of conscription.⁴

In the earlier years of the war both undergraduates and graduate students could obtain deferments. The Military Selective Service Act of 1967 eliminated most graduate deferments while keeping undergraduate deferments for students under 24.⁴ Divinity students were the one graduate group that kept the deferment after 1967.⁵ In September 1971, Congress eliminated new undergraduate deferments as well, though men already holding them could keep the classification through the end of the school year.

The deferment was a powerful enough incentive to change behavior. Research estimates it raised male college attendance by four to six percentage points in the late 1960s.⁴ Critics called II-S the most overtly class-biased feature of the draft, since access to four-year colleges skewed heavily toward the affluent. A survey of Harvard’s Class of 1970 found only two members served in Vietnam.⁶

Fatherhood and Hardship (III-A)

President Kennedy’s 1963 Executive Order 11098 established the III-A classification for men who could demonstrate a bona fide relationship with a child. It became the single most-used exemption. By 1969, more than four million men held paternity deferments, over twice the number holding student deferments. The incentive was strong enough to move demographic data: first birth rates among draft-age men rose noticeably in the mid- and late 1960s.⁷

On April 23, 1970, President Nixon issued Executive Order 11527, which eliminated paternity as a basis for new deferments except in “extreme cases.” Men already holding a paternity deferment, and those with pending applications that would have been granted, were grandfathered in. First birth rates among women aged 20 to 24 then dropped sharply.⁷ The requirement centered on children, not marriage: there was no standalone “married man” deferment.

Medical Disqualification (IV-F and I-Y)

IV-F covered men found physically, mentally, or morally unfit for any military service. Registrants who reported to a Military Entrance Processing Station were evaluated on all three grounds, and those who failed were sent home. The related I-Y classification designated men who could be called only in a national emergency; it was abolished on December 10, 1971.³

Military medical standards were broad, covering heart and vascular problems, neurological disorders, psychiatric and behavioral conditions, respiratory illness, musculoskeletal defects, vision and hearing problems, and endocrine disorders. Conditions such as asthma, chronic back pain, severe flat feet, and bone spurs could all lead to disqualification. Examiners themselves could not grant waivers; that authority sat with senior administrative officials.⁸

Access to the medical exemption was uneven. According to analysis published by the VVA Veteran, registrants with the knowledge and resources to press a medical claim — including a supportive private physician’s documentation — had roughly a 90 percent chance of receiving a physical or psychological exemption. Men without those resources often received only a perfunctory induction exam.⁶

Conscientious Objectors (I-O and I-A-O)

Two classifications covered men who opposed participation in war. I-A-O designated conscientious objectors willing to serve in noncombatant military roles. I-O designated those who refused all military service but were available for civilian alternative work in national health, safety, or interest.³

Section 6(j) of the Military Selective Service Act of 1967 defined conscientious objectors as those who, “by reason of religious training and belief,” were “conscientiously opposed to participation in war in any form.”⁹ Two Supreme Court decisions widened who fit that definition. In United States v. Seeger (1965), the Court held that the statutory “belief in a relation to a Supreme Being” was satisfied by any “sincere and meaningful belief which occupies in the life of its possessor a place parallel to that filled by the God of those admittedly qualifying for the exemption.” In Welsh v. United States (1970), the Court accepted objections rooted in deeply held moral or ethical beliefs — even ones the applicant described as nonreligious — so long as those beliefs were held with “the strength of traditional religious convictions.”¹⁰

The limits were firm. In Gillette v. United States (1971), the Court ruled that objecting to a specific war, including one the applicant believed unjust, was not enough. The applicant had to oppose war in any form, and beliefs rooted primarily in politics, expediency, or self-interest were excluded.⁹ Men who failed to qualify but still refused induction faced federal imprisonment.

Ministers, Divinity Students, and Occupational Deferments

IV-D exempted ordained ministers of religion and divinity students outright, and II-D deferred men studying to become ministers.¹¹ Qualifying as a “duly ordained minister” required ordination according to a church’s practices and preaching, teaching, and administering rites as a “regular and customary vocation.” A “regular minister” who had not been formally ordained could also qualify if a religious organization recognized him and he performed ministerial duties as a customary vocation. Preaching only “irregularly or incidentally” did not qualify. Courts applied the vocation test strictly: one ruling identified 160 hours per month of ministerial work as a relevant threshold, and claims based on 12 to 15 hours per month were denied.¹²

Occupational deferments came in two flavors. II-A covered civilian occupations considered important to national interests, and II-C covered agricultural work.³ Both had to be re-evaluated annually, and the registrant’s skill had to be actively employed in an essential activity to qualify.

The logic behind occupational deferments was openly instrumental. A 1965 Selective Service memorandum distributed to local boards described deferments as a tool for “channeling” men into fields the government considered vital, including engineering, the sciences, medicine, dentistry, teaching, tool and die making, and defense-related industry. The memo described the threat of induction as a “club” used to drive men “out of areas considered to be less important to the areas of greater importance.”¹³ Nixon’s April 1970 executive order also eliminated most new occupational and agricultural deferments, except in extreme cases.⁷

The Remaining Classifications

Several smaller categories rounded out the system:

IV-A: men who had already completed military service, or who were the sole surviving son in a family.
IV-B: certain government officials exempted by statute.
IV-C: foreign nationals, sometimes exempt from service.
IV-G: peacetime exemption for a sole surviving son when a parent or sibling had died in U.S. military service or was captured or missing in action.
V-A: registrants past the age of draft liability.
I-D: members of reserve components or students in military training, including ROTC.
I-C: men already serving in the armed forces, the Coast and Geodetic Survey, or the Public Health Service.³

Who Actually Served

The system’s roughly 6,400 local draft boards — staffed by civilian volunteers including politicians, law enforcement officials, veterans, school officials, doctors, and business owners — held wide discretion over classification decisions.¹⁴ The 1967 Act tried to rein in some of that discretion by setting uniform standards for undergraduate deferments, and the Supreme Court reinforced the limit in Breen v. Selective Service Local Board No. 16 (1970), ruling that boards could not strip a student deferment as punishment for administrative violations like failing to carry a draft card.¹⁵ Boards still shaped outcomes heavily. In some states they were intentionally staffed by white, middle- or upper-class men, and some communities reportedly used them to “rid themselves of idlers and minor delinquents.”

The cumulative effect showed up in who fought. According to the National Opinion Research Center, 75 percent of the men who fought in Vietnam came from poor or working-class backgrounds.⁶ A separate analysis found that 80 percent of the 2.5 million enlisted men who served in Vietnam came from poor or working-class families, and 80 percent had no education beyond high school.¹ A University of Notre Dame study concluded that men from disadvantaged backgrounds were about twice as likely as their more affluent peers to serve, go to Vietnam, and see combat.

Race compounded the pattern. In 1966, the Pentagon reported that Black servicemembers accounted for more than 18 percent of deaths in Vietnam despite representing only 13 percent of combat forces. Research by economist Ilyana Kuziemko calculated that Black soldiers in 1966 faced a death rate 2.72 times that of white soldiers, in part because they were less likely to be assigned to safer roles like the National Guard. Kuziemko also found that wealthier and white men responded to high-risk lottery numbers by enrolling in college (“dodging up”), while Black and lower-income men often responded to the same risk through behavior that rendered them medically or morally unfit (“dodging down”).¹⁶ By 1968, roughly 100,000 men were on the waiting list for the National Guard, and only about 15,000 of more than one million Guardsmen and reservists were sent to Vietnam.²

The pattern ran in the other direction too. Under Project 100,000, launched by Defense Secretary Robert McNamara on October 1, 1966, the military lowered its entrance standards to induct men who had previously been rejected as unfit — a policy pointed the opposite way from an exemption. The program inducted 354,000 men between 1966 and 1971. Its recruits were disproportionately Black or Hispanic (38 percent, compared to 10 percent in a control group), saw combat at nearly twice the rate of other troops, and died at three times the rate. A total of 5,478 were killed and about 20,000 wounded.¹⁷¹⁸

The 1969 Lottery and the Wind-Down of Deferments

Growing opposition to the war and criticism of the deferment system led President Nixon to overhaul it. On May 13, 1969, he asked Congress to limit draft eligibility to a single year, replace the oldest-first call order with a random lottery, and reduce deferments.⁷ The first lottery, held in December 1969, assigned a random number from 1 to 366 to each calendar birthday. Men turning 19 the following year were called in the order of their assigned numbers, lowest first.⁵

A man not called during his year of exposure could not be drafted later, with one exception: a student deferment carried his number forward, and he became liable again the year after the deferment expired.⁵ Lotteries followed in 1970 and 1971. Later lotteries were held but never used to call anyone to service.⁷

On September 28, 1971, Nixon signed legislation ending conscription and placing the Selective Service on standby. Secretary of Defense Melvin Laird announced the formal end of the draft on January 27, 1973.¹⁹

Carter’s Pardon for Draft Evaders

On January 21, 1977, his first full day in office, President Jimmy Carter issued Proclamation 4483, granting a “full, complete and unconditional pardon” to those who had violated the Military Selective Service Act through draft evasion between August 4, 1964, and March 28, 1973.²⁰ The pardon restored full political and civil rights to those convicted. It did not cover military deserters or those who had received less-than-honorable discharges — categories that, as the American Veterans Committee noted, disproportionately included minority and less-advantaged men. Senator Barry Goldwater called the pardon “the most disgraceful thing that a president has ever done.”²¹

The Selective Service System itself remains on standby. Registration was suspended in 1975, resumed in the summer of 1980, and young men are now required to register within 30 days of their 18th birthday.²²

1
University of Michigan. The Military Draft During the Vietnam War
2
Tampa Bay Times. Many GOP Members Avoided Draft Too
3
Selective Service System. Return to Draft
4
University of British Columbia Department of Economics. Draft Avoidance and College Enrollment
5
Marquette University Law School Faculty Blog. Remembering Conscription in the United States
6
VVA Veteran. Selective Service
7
National Institutes of Health (PMC). Draft Deferments and Fertility
8
Department of the Army. AR 40-501 Standards of Medical Fitness
9
First Amendment Encyclopedia (MTSU). Conscientious Objection to Military Service
10
Justia. Welsh v. United States, 398 U.S. 333
11
Gilder Lehrman Institute of American History. Draft Board Classifications
12
Church Law & Tax. Exemption from Military Duty
13
Hasbrouck.org. Channeling Memorandum
14
Army University Press. Selective Service
15
Justia. Breen v. Selective Service Local Bd. No. 16, 396 U.S. 460
16
Yale Law School. Kuziemko Draft Avoidance Research
17
Task & Purpose. Project 100,000 Vietnam
18
VVA Veteran. Project 100,000
19
Association of the United States Army. 50 Years Without a Draft
20
National Archives. Proclamation 4483
21
NPR. Jimmy Carter Vietnam Draft Evaders Pardon
22
Selective Service System. History and Records