Mr. Justice Brennan
delivered the opinion of the Court.
A draftee accorded Class 1-0 conscientious objector status and completing performance of required alternative [363]*363civilian service1 does not qualify under 38 U. S. C. § 1652 (a)(1) as a “veteran who . . . served on active duty” (defined in 38 U. S. C. § 101 (21) as “full-time duty in the Armed Forces”), and is therefore not an “eligible veteran” entitled under 38 U. S. C. § 1661 (a) to veterans’ educational benefits provided by the Veterans’ Readjustment Benefits Act of 1966.2 Appellants, the Veterans’ [364]*364Administration and the Administrator of Veterans' Affairs, for that reason, denied the application for educational assistance of appellee Robison, a conscientious objector who filed his application after he satisfactorily completed two years of alternative civilian service at the Peter Bent Brigham Hospital, Boston. Robison thereafter commenced this class action 3 in the United States District Court for the District of Massachusetts, seeking a declaratory judgment that 38 U. S. C. §§ 101 (21), 1652 (a)(1), and 1661 (a), read together, violated the First Amendment’s guarantee of religious freedom and the Fifth Amendment’s guarantee of equal protection of the laws.4 Appellants moved to dismiss the action on the [365]*365ground, among others, that the District Court lacked jurisdiction because of 38 U. S. C. § 211 (a) which prohibits judicial review of decisions of the Administrator.5 The District Court denied the motion, and, on the merits, rejected appellee’s First Amendment claim, but sustained the equal protection claim and entered a judgment declaring “that 38 U. S. C. §§ 1652 (a) (1) and 1661 (a) defining ‘eligible veteran’ and providing for entitlement to educational assistance are unconstitutional and that 38 U. S. C. § 101 (21) defining ‘active duty’ is unconstitutional with respect to chapter 34 of Title 38, United States Code, 38 U. S. C. §§ 1651-1697, conferring Veterans’ Educational Assistance, for the reason that said sections deny plaintiff and members of his class due process of law in violation of the Fifth Amendment to the Constitution of the United States_” 352 F. Supp. 848, 862 (1973).6 We post[366]*366poned consideration of the question of jurisdiction in light of § 211 (a) to the hearing on the merits, and set the case for oral argument with No. 72-700, Hernandez v. Veterans’ Administration, post, p. 391. 411 U. S. 981 (1973).7 We hold, in agreement with the District Court, that § 211 (a) is inapplicable to this action and therefore that appellants’ motion to dismiss for lack of jurisdiction of the subject matter was properly denied. On the merits, we agree that appellee’s First Amendment claim is without merit but disagree that §§ 1652 (a)(1), 1661 (a), and 101 (21) violate the Fifth Amendment and therefore reverse the judgment of the District Court.
I
We consider first appellants’ contention that § 211 (a) bars federal courts from deciding the constitutionality of veterans’ benefits legislation. Such a construction would, of course, raise serious questions concerning the constitutionality of §211 (a),8 and in such case “it is a [367]*367cardinal principle that this Court will first ascertain whether a construction of the statute is fairly possible by which the [constitutional] question[s] may be avoided.” United States v. Thirty-seven Photographs, 402 U. S. 363, 369 (1971).
Plainly, no explicit provision of § 211 (a) bars judicial consideration of appellee’s constitutional claims. That section provides that “the decisions of the Administrator on any question of law or fact under any law administered by the Veterans’ Administration providing benefits for veterans . . . shall be final and conclusive and no . . . court of the United States shall have power or jurisdiction to review any such decision_” (Emphasis added.) The prohibitions would appear to be aimed at review only of those decisions of law or fact that arise in the administration by the Veterans’ Administration of a statute providing benefits for veterans. A decision of law or fact “under” a statute is made by the Administrator in the interpretation or application of a particular provision of the statute to a particular set of facts. Appellee’s constitutional challenge is not to any such decision of the Administrator, but rather to a decision of Congress to create a statutory class entitled to benefits that does not include 1-0 conscientious objectors who performed alternative civilian service. Thus, as the District Court stated: “The questions of law presented in these proceedings arise under the Constitution, not under the statute whose validity is challenged.” 352 F. Supp., at 853.
This construction is also supported by the administrative practice of the Veterans’ Administration. “When faced with a problem of statutory construction, this Court shows great deference to the interpretation given the [368]*368statute by the officers or agency charged with its administration.” Udall v. Tallman, 380 U. S. 1, 16 (1965). The Board of Veterans’ Appeals expressly disclaimed authority to decide constitutional questions in Appeal of Sly, C-27 593 725 (May 10, 1972). There the Board, denying a claim for educational assistance by a 1-0 conscientious objector, held that “[t]his decision does not reach the issue of the constitutionality of the pertinent laws as this matter is not within the jurisdiction of this Board.” Sly thus accepts and follows the principle that “[adjudication of the constitutionality of congressional enactments has generally been thought beyond the jurisdiction of administrative agencies. See Public Utilities Comm’n v. United States, 355 U. S. 534, 539 (1958); Engineers Public Service Co. v. SEC, 78 U. S. App. D. C. 199, 215-216, 138 F. 2d 936, 952-953 (1943), dismissed as moot, 332 U. S. 788.” Oestereich v. Selective Service Board, 393 U. S. 233, 242 (1968) (Harlan, J., concurring in result); see Jaffe, Judicial Review: Question of Law, 69 Harv. L. Rev. 239, 271-275 (1955).
Nor does the legislative history accompanying the 1970 amendment of § 211 (a) demonstrate a congressional intention to bar judicial review even of constitutional questions. No-review clauses similar to § 211 (a) have been a part of veterans’ benefits legislation since 1933.9 While [369]*369the legislative history accompanying these precursor no-review clauses is almost nonexistent,10 the Administrator, in a letter written in 1952 in connection with a revision [370]*370of the clause under consideration by the Subcommittee of the House Committee on Veterans’ Affairs, comprehensively explained the policies necessitating the no-review clause and identified two primary purposes: (1) to insure that veterans’ benefits claims will not burden the courts and the Veterans’ Administration with expensive and time-consuming litigation,11 and (2) to insure that the technical and complex determinations and applications of Veterans’ Administration policy connected with veterans’ benefits decisions will be adequately and uniformly made.12
[371]*371The legislative history of the 1970 amendment indicates nothing more than a congressional intent to preserve these two primary purposes. Before amendment, the no-review clause made final “the decisions of the Administrator on any question of law or fact concerning a claim for benefits or payments under [certain] law[s] administered by the Veterans’ Administration” (emphasis added), 38 U. S. C. § 211 (a) (1964 ed.), 71 Stat. 92. In a series of decisions, e. g., Wellman v. Whittier, 104 U. S. App. D. C. 6, 259 F. 2d 163 (1958); Thompson v. Gleason, 115 U. S. App. D. C. 201, 317 F. 2d 901 (1962); and Tracy v. Gleason, 126 U. S. App. D. C. 415, 379 F. 2d 469 (1967), the Court of Appeals for the District of Columbia Circuit interpreted the term “claim” as a limitation upon the reach of § 211 (a), and as a consequence held that judicial review of actions by the Administrator subsequent to an original grant of benefits was not barred.
Congress perceived this judicial interpretation as a threat to the dual purposes of the no-review clause. First, the interpretation would lead to an inevitable increase in litigation with consequent burdens upon the courts and the Veterans’ Administration. In its House Report, the Committee on Veterans’ Affairs stated that “[sjince the decision in the Tracy case — and as the result of that decision and the Wellman and Thompson decisions — suits in constantly increasing numbers have been filed in the U. S. District Court for the District of Columbia by plaintiffs seeking a resumption of terminated benefits.” H. R. Rep. No. 91-1166, p. 10 (1970). This same concern over the rising number of court cases was expressed by the Administrator in a letter to the Committee:
“The Wellman, Thompson, and Tracy decisions have not been followed in any of the other 10 Federal judicial circuits throughout the country. [372]*372Nevertheless, soon after the Tracy decision, suits in the nature of mandamus or for declaratory judgment commenced to be filed in the U. S. District Court for the District of Columbia in constantly increasing numbers by plaintiffs seeking resumption of terminated benefits. As of March 8, 1970, 353 suits of this type had been filed in the District of Columbia circuit.
“The scope of the Tracy decision and the decisions upon which it is based is so broad that it could well afford a basis for judicial review of millions of decisions terminating or reducing many types of benefits provided under laws administered by the Veterans’ Administration. Such review might even extend to the decisions of predecessor agencies made many years ago.” Id., at 21, 24.
Second, Congress was concerned that the judicial interpretation of § 211 (a) would involve the courts in day-to-day determination and interpretation of Veterans’ Administration policy. The House Report states that the cases already filed in the courts in response to Well-man, Thompson, and Tracy
“involve a large variety of matters — a 1930’s termination of a widow’s pension payments under a statute then extant, because of her open and notorious adulterous cohabitation; invalid marriage to a veteran; severance of a veteran’s service connection for disability compensation; reduction of such compensation because of lessened disability . . . [and] suits . . . brought by [Filipino] widows of World War II servicemen seeking restoration of death compensation or pension benefits terminated after the Administrator raised a presumption of their remarriage on the basis of evidence gathered through [373]*373field examination. Notwithstanding the 1962 endorsement by the Congress of the Veterans’ Administrations [sic] administrative presumption of remarriage rule, most of [the suits brought by Filipino widows] have resulted in judgments adverse to the Government.” Id., at 10.
The Administrator voiced similar concerns, stating that “it seems obvious that suits similar to the several hundred already filed can — and undoubtedly will — subject nearly every aspect of our benefit determinations to judicial review, including rating decisions, related Veterans’ Administration regulations, Administrator’s decisions, and various adjudication procedures.” Letter to the Committee on Veterans’ Affairs 23-24.
Thus, the 1970 amendment was enacted to overrule the interpretation of the Court of Appeals for the District of Columbia Circuit, and thereby restore vitality to the two primary purposes to be served by the no-review clause. Nothing whatever in the legislative history of the 1970 amendment, or predecessor no-review clauses, suggests any congressional intent to preclude judicial cognizance of constitutional challenges to veterans’ benefits legislation. Such challenges obviously do not contravene the purposes of the no-review clause, for they cannot be expected to burden the courts by their volume, nor do they involve technical considerations of Veterans’ Administration policy. We therefore conclude, in agreement with the District Court, that a construction of § 211 (a) that does not extend the prohibitions of that section to actions challenging the constitutionality of laws providing benefits for veterans is not only “fairly possible” but is the most reasonable construction, for neither the text nor the scant legislative history of § 211 (a) provides the “clear and convincing” evidence of congressional intent required by this Court before a [374]*374statute will be construed to restrict access to judicial review. See Abbott Laboratories v. Gardner, 387 U. S. 136, 141 (1967).
II
Turning to the merits, the District Court held that, by not including appellee and his class, the challenged sections of the Act create an arbitrary classification in violation of appellee's right to equal protection of the laws. In determining whether, in limiting the class of draftees entitled to benefits to those who serve their country on active duty in the Armed Forces, Congress denied equal protection of the laws to Selective Service registrants who perform alternative civilian service as conscientious objectors,13 our analysis of the classification proceeds on the basis that, although an individual’s right to equal protection of the laws “does not deny . . . the power to treat different classes of persons in different ways[;] ... [it denies] the power to legislate that different treatment be accorded to persons placed by a statute into different classes on the basis of criteria wholly unrelated to the objective of that statute. A classification 'must be reasonable, not arbitrary, and must rest upon some ground of difference having a fair and substantial relation to the object of the legislation, so that all persons similarly [375]*375circumstanced shall be treated alike.’ Royster Guano Co. v. Virginia, 253 U. S. 412, 415 (1920).” Reed v. Reed, 404 U. S. 71, 75-76 (1971).14
[376]*376Unlike many state and federal statutes that come before us, Congress in this statute has responsibly revealed its express legislative objectives in § 1651 of the Act and no other objective is claimed:
“The Congress of the United States hereby declares that the education program created by this chapter is for the purpose of (1) enhancing and making more attractive service in the Armed Forces of the United States, (2) extending the benefits of a higher education to qualified and deserving young persons who might not otherwise be able to afford such an education, (3) providing vocational readjustment and restoring lost educational opportunities to those service men and women whose careers have been interrupted or impeded by reason of active duty after January 31, 1955, and (4) aiding such persons in attaining the vocational and educational status which they might normally have aspired to and obtained had they not served their country.”
Legislation to further these objectives is plainly within Congress’ Art. I, § 8, power “to raise and support Armies.” Our task is therefore narrowed to the determination of whether there is some ground of difference having a fair and substantial relation to at least one of the stated purposes justifying the different treatment accorded veterans who served on active duty in the Armed Forces, and conscientious objectors who performed alternative civilian service.
The District Court reasoned that objectives (2), (3), and (4) of § 1651 are basically variations on a single theme reflecting a congressional purpose to “eliminate the educational gaps between persons who served their country and those who did not.” 352 F. Supp., at 858. Therefore,
[377]*377“[t]he exclusion from eligibility of [appellee] and his class would be justified if they do not suffer the same disruption in educational careers as do military veterans, and thus are not similarly situated with respect to the statute’s purpose. We believe . . . that the disruption is equal as between the two groups. Like military veterans, alternate servicemen have been exposed to the uncertainties caused by the draft law. They too were burdened at one time by an unsatisfied military obligation that adversely affected their employment potential; were forced, because of the draft law, to [forgo] immediately entering into vocational training or higher education; and were deprived, during the time they performed alternate service, of the opportunity to obtain educational objectives or pursue'more rewarding civilian goals.” Id., at 858-859.
The error in this rationale is that it states too broadly the congressional objective reflected in (2), (3), and (4) of § 1651. The wording of those sections, in conjunction with the attendant legislative history, makes clear that Congress’ purpose in enacting the Veterans’ Readjustment Benefits Act of 1966 was not primarily to “eliminate the educational gaps between persons who served their country and those who did not,” but rather to compensate for the disruption that military service causes to civilian lives. In other words, the aim of the Act was to assist those who served on active duty in the Armed Forces to “readjust” to civilian life. Indeed, as the appellants argue, Brief for Appellants 20 n. 18, “the very name of the statute — the Veterans’ Readjustment Benefits Act — emphasizes congressional concern with the veteran’s need for assistance in readjusting to civilian life.”
Of course, merely labeling the class of beneficiaries under the Act as those having served on active duty in [378]*378the Armed Services cannot rationalize a statutory discrimination against conscientious objectors who have performed alternative civilian service, if, in fact, the lives of the latter were equally disrupted and equally in need of readjustment. See Richardson v. Belcher, 404 U. S. 78, 83 (1971). The District Court found that military veterans and alternative service performers share the characteristic during their respective service careers of “inability to pursue the educational and economic objectives that persons not subject to the draft law could pursue.” 352 F. Supp., at 859. But this finding of similarity ignores that a common characteristic shared by beneficiaries and nonbeneficiaries alike, is not sufficient to invalidate a statute when other characteristics peculiar to only one group rationally explain the statute’s different treatment of the two groups. Congress expressly recognized that significant differences exist between military service veterans and alternative service performers, particularly in respect of the Act’s purpose to provide benefits to assist in readjusting to civilian life. These differences “afford the basis for a different treatment within a constitutional framework,” McGinnis v. Royster, 410 U. S. 263, 271 (1973).
First, the disruption caused by military service is quantitatively greater than that caused by alternative civilian service. A conscientious objector performing alternative service is obligated to work for two years. Service in the Armed Forces, on the other hand, involves a six-year commitment. While active duty may be limited to two years, the military veteran remains subject to an Active Reserve and then Standby Reserve obligation after release from active duty. This additional military service obligation was emphasized by Congress as a significant reason for providing veterans’ readjustment benefits. A section entitled “Compulsory Reserve requirements” of the Senate Report states:
[379]*379“The hardships of cold war service are still further aggravated by the compulsory military Reserve obligation which the Government has imposed on all men who entered service after August 9, 1955. This obligation is, of course, in sharp contrast with the traditional military obligation which ends immediately upon discharge from active duty. More importantly, however, the Active Reserve obligation impedes the cold war veterans’ full participation in civil life, which, in turn, again exposes them to unfair competition from their civilian contemporaries. The fact that veterans must discharge a post-Korean Reserve obligation involving drills and other military activities quite obviously enables their civilian contemporaries, by comparison, to make still more gains toward enjoyment of the fruits of our free enterprise society. . . . [F]or those men who wish to devote full time to their civil goals, the Reserve obligation constitutes a substantial supplementary burden.” S. Rep. No. 269, 89th Cong., 1st Sess., 10 (1965).
Second, the disruptions suffered by military veterans and alternative service performers are qualitatively different. Military veterans suffer a far greater loss of personal freedom during their service careers. Uprooted from civilian life, the military veteran becomes part of the military establishment, subject to its discipline and potentially hazardous duty. Congress was acutely aware of the peculiar disabilities caused by military service, in consequence of which military servicemen have a special need for readjustment benefits. The Senate Report accompanying the Act states:
“Compulsory military service, because of its incompatibility with our traditions and national temperament, is not lightly imposed upon our [380]*380citizenry. Only war, or the imminent threat of war from unfriendly powers, creates the conditions, which, by the values of our society, justify this extraordinary deviation from our free enterprise, individualistic way of life. When, as now, the need for large but limited forces conflicts with our sense of equity which expects equal national service from all, we are concerned to find that less than half of our young men will ever be compelled to serve a substantial period in the Military Establishment.
“Action to redress the inequities of this situation is long overdue. Our post-Korean veterans are beset with problems almost identical with those to which the two previous GI bills were addressed. Like their fathers and elder brothers, post-Korean veterans lose time from their competitive civil lives directly because of military service. As a consequence, they lose valuable opportunities ranging from educational advantages to worthwhile job possibilities and potentially profitable business ventures. In addition, after completion of their military service they confront serious difficulties during the transition to civil life.
“The major part of the burden caused by these cold war conditions quite obviously falls upon those of our youths who are called to extended tours of active military service. It is they who must serve in the Armed Forces throughout troubled parts of the world, thereby subjecting themselves to the mental and physical hazards as well as the economic and family detriments which are peculiar to military service and which do not exist in normal civil life. It is they who, upon separation from [381]*381service, find themselves far, far behind those in their age group whose lives have not been disrupted by military service.” S. Rep. No. 269, 89th Cong., 1st Sess., 3, 6-7, 8 (1965) (emphasis added).
See also H. R. Rep. No. 1258, 89th Cong., 2d Sess., 4 (1966).15 Congress’ reliance upon these differences between military and civilian service is highlighted by the inclusion of Class I-A-0 conscientious objectors, who serve in the military in noncombatant roles, within the class of beneficiaries entitled to educational benefits under the Act.16
These quantitative and qualitative distinctions, expressly recognized by Congress, form a rational basis for [382]*382Congress' classification limiting educational benefits to military service veterans as a means of helping them readjust to civilian life; alternative service performers are not required to leave civilian life to perform their service.
The statutory classification also bears a rational relationship to objective (1) of § 1651, that of “enhancing and making more attractive service in the Armed Forces of the United States.” By providing educational benefits to all military veterans who serve on active duty Congress expressed its judgment that such benefits would make military service more attractive to enlistees and draftees alike. Appellee concedes, Brief for Appellee 28, that this objective is rationally promoted by providing educational benefits to those who enlist. But, appellee argues, there is no rational basis for extending educational benefits to draftees who serve in the military and not to draftees who perform civilian alternative service, since neither group is induced by educational benefits to enlist. Therefore, appellee concludes, the Act's classification scheme does not afford equal protection because it fails to treat equally persons similarly circumstanced.
The two groups of draftees are, in fact, not similarly circumstanced. To be sure, a draftee, by definition, does not find educational benefits sufficient incentive to enlist. But, military service with educational benefits is obviously more attractive to a draftee than military service without educational benefits. Thus, the existence of educational benefits may help induce a registrant either to volunteer for the draft or not seek a lower Selective Service classification.17 Furthermore, once drafted, educational benefits may help make military service more palatable to a draftee and thus reduce a draftee's unwillingness to be a soldier. On the other hand, because a [383]*383conscientious objector bases his refusal to serve in the Armed Forces upon deeply held religious beliefs, we will not assume that educational benefits will make military service more attractive to him. When, as in this case, the inclusion of one group promotes a legitimate governmental purpose, and the addition of other groups would not, we cannot say that the statute’s classification of beneficiaries and nonbeneficiaries is invidiously discriminatory.18 jjj
Finally, appellee argues that the District Court erred in holding that “the challenged exclusion does not abridge [appellee’s] free exercise of his religion,” 352 F. Supp., at 860. He contends that the Act’s denial of benefits to alternative service conscientious objectors interferes with his free exercise of religion by increasing the price he must pay for adherence to his religious beliefs. That contention must be rejected in light of our decision in Gillette v. United States, 401 U. S. 437 (1971).
There, the petitioners, conscientious objectors to particular wars, argued that § 6 (j) of the Military Selective [384]*384Service Act of 1967, 50 U. S. C. App. §456 (j), which limits an exemption from military service to those who conscientiously object to “participation in war in any form” (emphasis supplied), infringed their rights under the Free Exercise Clause by requiring them to abandon their religious beliefs and participate in what they deemed an unjust war or go to jail. We acknowledged that
“the Free Exercise Clause bars 'governmental regulation of religious beliefs as such,’ Sherbert v. Verner, 374 U. S. 398, 402 (1963), or interference with the dissemination of religious ideas. See Fowler v. Rhode Island, 345 U. S. 67 (1953); Follett v. McCormick, 321 U. S. 573 (1944); Murdock v. Pennsylvania, 319 U. S. 105 (1943). It prohibits misuse of secular governmental programs 'to impede the observance of one or all religions or ... to discriminate invidiously between religions, . . . even though the burden may be characterized as being only indirect.’ Braunfeld v. Brown, 366 U. S., at 607 (opinion of Warren, C. J.). And even as to neutral prohibitory or regulatory laws having secular aims, the Free Exercise Clause may condemn certain applications clashing with imperatives of religion and conscience, when the burden on First Amendment values is not justifiable in terms of the Government’s valid aims.” 401 U. S., at 462.
We made clear, however, that “[o]ur cases do not at their farthest reach support the proposition that a stance of conscientious opposition relieves an objector from any colliding duty fixed by a democratic government.” “[Rather,] incidental burdens .. . [maybe] strictly justified by substantial governmental interests . . . .” Id., at 461, 462. Finding “the Government’s interest in procuring the manpower necessary for military purposes, pursuant to the congressional grant of power to Congress [385]*385to raise and support armies[,] Art. I, § 8/’ “of a kind and weight sufficient to justify under the Free Exercise Clause the impact of the conscription laws on those who object to particular wars,” id., at 462, 461, we held that § 6 (j) did not violate the Free Exercise Clause.
The challenged legislation in the present case does not require appellee and his class to make any choice comparable to that required of the petitioners in Gillette. The withholding of educational benefits involves only an incidental burden upon appellee’s free exercise of religion — if, indeed, any burden exists at all.19 As Part II, supra, demonstrates, the Act was enacted pursuant to Congress’ Art. I, § 8, powers to advance the neutral, secular governmental interests of enhancing military service and aiding the readjustment of military personnel to civilian life. Appellee and his class were not included in this class of beneficiaries, not because of any legislative design to interfere with their free exercise of religion, but because to do so would not rationally promote the Act’s purposes. Thus, in light of Gillette, the Government’s substantial interest in raising and supporting armies, Art. I, § 8, is of “a kind and weight” clearly sufficient to sustain the challenged legislation, for the burden upon appellee’s free exercise of religion — the denial of the economic value of veterans’ educational benefits under the Act — is not nearly of the same order [386]*386or magnitude as the infringement upon free exercise of religion suffered by petitioners in Gillette. See also Wisconsin v. Yoder, 406 U. S. 205, 214 (1972).
Reversed.