Appellant, Jeffrey Garrett, a former Marine Corporal, was relieved of duty with an “other than honorable discharge” pursuant to the recommendation of the Military Administrative Discharge Board (hereinafter the Board). He appealed to the district court, which granted summary judgment in favor of appellees (hereinafter the Marines Corps). Garrett seeks reversal on several grounds. He also asks this court to extend the exclusionary rule to military administrative discharge proceedings. We decline to do so because the societal cost would be intolerable.
1. PERTINENT FACTS AND PROCEDURE
The procedural background of this case provides the framework for consideration of Garrett’s contentions on appeal. Accordingly, we first summarize the proceedings before the Special-Court Martial, the United States Navy-Marine Corps Court of Military Review, the Administrative Discharge Board, and the district court.1
A. The Court-Martial Proceedings
On October 8, 1981, a Special Court-Martial found Garrett guilty of possession and the introduction of 386 grams of marijuana onto the Camp Pendleton Marine Corps Base in violation of Article 92, Uniform Code of Military Justice, 10 U.S.C. § 892. Garrett was sentenced to pay reduction and separation with a bad conduct discharge.
The case against Garrett was based, in part, on evidence seized by a military police officer.2 On July 16, 1981, a roving patrol *1000observed four servicemen, including Garrett, engaged in discussion on the Camp Pendleton Base in an area known to be frequented by persons who use controlled substances. The officer became suspicious. He approached the group and ordered them to “freeze.” Garrett was observed slipping what appeared to be a pipe into his pocket. He was commanded to remove and relinquish the item. At this time, the officer observed marijuana inside the pipe. The officer then requested and received Garrett’s consent to search the interior of his camper. The search revealed sixteen plastic bags of marijuana.
The marijuana and the pipe were admitted into evidence at the Special Court-Martial.
Garrett was interviewed by Naval Investigation Service (hereinafter NIS) Agent Garcia following his arrest. He was fully advised of his rights prior to questioning. Garrett admitted ownership of the contraband, and stated that he obtained the marijuana in Arizona for the purpose of later sale and use. It is unclear whether this statement was introduced at the Special Court-Martial.3 While the record of the court-martial was being reviewed, Garrett was on “appellate leave.”
B. Military Review Court Proceedings
Garrett raised three assignments of error on his appeal to the United States Navy-Marine Court of Military Review (hereinafter Review Court). Only one was addressed by the Review Court; i.e., the trial judge’s alleged error in denying Garrett’s motion to suppress evidence seized in violation of the fourth amendment. United States v. Garrett, 15 M.J. 601, 602 (NMCMR 1982).
The Review Court held that the military police officer lacked probable cause to seize Garrett’s pipe. The Review Court concluded that the pipe was erroneously admitted at the court-martial and that the evidence obtained in Garrett’s camper was equally inadmissible as the fruit of the initial fourth amendment violation. Id. at 604. The Review Court set aside the Special Court-Martial’s finding of guilt, dismissed the charge, and set aside all specifications.
The Review Court limited its discussion to the reasonableness of the arrest and search. The Review Court stated: “Our resolution of that issue renders the remaining assignments of error moot.” Id. at 602. The Review Court did not address the sufficiency of the evidence presented to show factual guilt nor the merits of the case.
C. Administrative Discharge Board Proceedings
On December 2, 1982, Garrett was ordered to return to active duty by his Commanding General. The purpose of this order was to give the Board jurisdiction to determine Garrett’s fitness for future service in the Marine Corps. The Commanding General recommended that Garrett be discharged with a characterization of service as “other than honorable.” On January 7, 1983, Garrett was notified of Board separation proceedings based on the charge of “misconduct; drug abuse” pursuant to Marine Corps Separation and Retirement Manual (hereinafter Manual) §§ 6210.1, 6210.5. The Board granted Garrett’s request for a hearing.
*1001At the hearing, the Marine’s Recorder (Recorder) presented the Board a “basic package” of evidence. This package which Garrett’s military and civilian counsel had received prior to the proceeding included: (1) lab reports authenticating the marijuana seized in the pipe and camper; (2) the Special Court-Martial order documenting the specifications tried; and (3) a signed NIS statement.
The Recorder also offered into evidence the full NIS report, and Agent Garcia’s unsworn statement which summarized Garrett’s admissions. Garrett’s civilian counsel had not received this supplemental material prior to the Board proceedings. His military counsel, however, had reviewed the entire report in connection with the court-martial. Garrett made a timely objection to the admission of all evidence.
Garrett presented evidence of overall good conduct and job performance. He denied participation in the sale of contraband. During closing argument, the Recorder implied that Garrett had a record of misconduct as a juvenile. Garrett did not object to the statements made by the Recorder.4
Following the hearing on the charge against Garrett, the Board recommended separation under “other than honorable” conditions.5 On February 16, 1983, the Commanding General effected this recommendation.
D. District Court Proceedings
Garrett initially requested that the district court issue a temporary restraining order and a preliminary injunction staying his administrative discharge. This relief was denied.
On May 31, 1983, Garrett filed an amended complaint requesting that the court declare the discharge void, vacate the judgment, and return him to active duty status. Thereafter, cross-motions for summary judgment were filed. On January 30,1984, the district court granted, the Marine Corps’ motion for a summary judgment. Garrett’s motion for a summary judgment was denied.
The district court filed a memorandum decision in which it held, inter alia, that the exclusionary rule was inapplicable to the Board proceeding.
ISSUES ON APPEAL
Garrett presents the following issues for our review:
1. Should the exclusionary rule be extended to military administrative discharge proceedings?
2. Did the Court of Military Review review the merits of the issues raised by Garrett concerning the judgment of conviction by the Special Court-Martial, thereby precluding any discharge proceedings concerning the same acts?
3. Was the act of recalling Garrett to active duty for the purpose of initiating discharge proceedings an abuse of discretion?
4. Were hearsay statements erroneously admitted by the Board?
5. Were the Marine Recorder’s statements at the Board proceeding made outside the scope of his authority?
*10026. Did the Board admit the NIS report in violation of applicable regulations?
II. DISCUSSION
A. Extension of Exclusionary Rule to Discharge Proceedings
Garrett contends that his separation under “other than honorable” conditions was invalid because the Board relied on evidence seized in violation of the fourth amendment. His argument for extension of the exclusionary rule to administrative discharge proceedings rests on two grounds: (1) The exclusionary rule applies to criminal and quasi-criminal proceedings. Garrett asserts that the Board proceedings were criminal or quasi-criminal because he was given a less than honorable discharge as a punishment for his past behavior; (2) The benefit which may be derived from extending the exclusionary rule to administrative discharge proceedings is the deterrence of unlawful military police conduct. We are told that such benefit outweighs the cost to society of proscribing the military’s use of otherwise competent evidence in administrative discharge proceedings.6
1. Nature of Proceedings
The Supreme Court has not extended the rule excluding evidence seized in violation of the fourth amendment to proceedings which are civil in nature. “In the complex and turbulent history of the [exclusionary] rule, the Court has never applied it to exclude evidence from a civil proceeding, federal or state.” United States v. Janis, 428 U.S. 433, 447, 96 S.Ct. 3021, 3029, 49 L.Ed.2d 1046 reh'g denied, 429 U.S. 874, 97 5. Ct. 196, 50 L.Ed.2d 158 (1976) (emphasis added).
The exclusionary rule has been applied to federal criminal proceedings since 1914. Weeks v. United States, 232 U.S. 383, 34 S.Ct. 341, 58 L.Ed. 652 (1914). Garrett first contends that the administrative discharge proceedings were criminal in nature and therefore the Weeks rule is applicable to this matter.
In deciding whether the administrative discharge proceedings under review were criminal in nature, we are guided by the Supreme Court’s decision in INS v. Lopez-Mendoza, — U.S.-, 104 S.Ct. 3479, 82 L.Ed.2d 778 (1984). The threshhold inquiry in Lopez-Mendoza was whether a deportation hearing was criminal in nature. The Court concluded it was not. Id. 104 S.Ct. at 3484. Although unlawful entry into the United States is a crime, the Court concluded that a deportation hearing is not designed to punish for such entry. Rather, the hearing “looks prospectively to [the alien’s] right to remain in this country in the future. Past conduct is relevant only insofar as it may shed light on the [alien’s] right to remain.” Id. 104 S.Ct. at 3484.
Administrative discharge proceedings are equally prospective. The function of such proceedings is to determine eligibility for further military service; not to punish for past wrongs. This purpose is explicitly set forth in the governing Manual provision:
There is a sharp and distinct delineation between the administrative process which has as its purpose the administrative elimination of unsuitable, unfit, or unqualified Marines, and the judicial process, the purpose of which is to establish the guilt or innocence of a member accused of a crime and to administer punishment when appropriate. No evidence will be rejected from consideration solely on the grounds that it would be inadmissible in court-martial proceedings.
Manual § 6316.1.
Garrett also argues that the administrative discharge proceedings are quasi-criminal in nature because his right to an honorable discharge was forfeited. He asserts that “the right to an honorable discharge is *1003a property right — to take property away because of misconduct is a penalty.”7 Garrett’s penalty argument is not supported by the law of this circuit. In Better v. Middendorf, 632 F.2d 788 (9th Cir.1980), cert. denied, 454 U.S. 855, 102 S.Ct. 304, 70 L.Ed.2d 150 reh’g denied sub nom. Miller v. Weinberger, 454 U.S. 1069, 102 S.Ct. 621, 70 L.Ed.2d 605 (1981), we held that discharge proceedings against enlistees, and their ultimate separation for violating Navy regulations against homosexuality, did not involve a property interest. We reasoned that “[t]he Navy regulations and practices create no reasonable expectation of continued employment once a person is determined to fall within the categories described in the applicable regulation.” Id. at 805; accord Watkins v. United States Army, 721 F.2d 687 (9th Cir.1983).
Garrett’s attempt to characterize administrative discharge proceedings as being analogous to a forfeiture proceeding is equally unpersuasive.
The exclusionary rule has been applied to forfeiture proceedings because they have been deemed to be “quasi-criminal.” Boyd v. United States, 116 U.S. 616, 634, 6 S.Ct. 524, 534, 29 L.Ed. 746 (1886). The Court continues to instruct us, however, that the reason forfeiture proceedings are so characterized is that “forfeiture is clearly a penalty for the criminal offense.” Janis 428 U.S. at 447 n. 17, 96 S.Ct. at 3029 n. 17, quoting One 1958 Plymouth Sedan v. Comm. of Pennsylvania, 380 U.S. 693, 701, 85 S.Ct. 1246, 1251, 14 L.Ed.2d 170 (1965) (emphasis added).
The Board recommended that Garrett be separated from the service with an “other than honorable” discharge because of his unfitness for future duty as shown by his commission of a crime — not as a punishment for his past behavior.
2. Balancing Test
The Supreme Court’s decisions in Janis and Lopez-Mendoza did not foreclose extension of the exclusionary rule to civil proceedings. Instead, the Court instructed that the exclusionary rule may be extended where the benefits exceed the costs to society.
The balancing test we are required to employ, “imprecise as it may be,” requires weighing “the likely social benefits of excluding unlawfully seized evidence against the likely costs.” Where the costs exceed the benefits, the exclusionary rule may not be applied. Lopez-Mendoza 104 S.Ct. at 3486, citing Janis 428 U.S. at 446, 96 S.Ct. at 3028 (compare Adamson v. Commissioner of Internal Revenue, 745 F.2d 541 [9 Cir., 1984]).
Garrett contends that the scales weigh in favor of extending the exclusionary rule to Board proceedings. We disagree.
a. Costs of Extension of Exclusionary Rule to Administrative Military Discharge Proceedings
The Supreme Court has consistently recognized the essential requirement of consistent military discipline. “[T]he primary business of armies and navies [is] to fight or be ready to fight wars should the occa*1004sion arise.” Schlesinger v. Councilman, 420 U.S. 738, 757, 95 S.Ct. 1300, 1313, 43 L.Ed.2d 591 (1975), quoting United States ex rel. Toth v. Quarles, 350 U.S. 11, 17, 76 S.Ct. 1, 5, 100 L.Ed. 8 (1955). This readiness demands a “military discipline and obedience to orders [which] cannot be taught on the battlefield; the habit of immediate compliance with orders must be virtually reflex with no time for debate or reflection.” Chappell v. Wallace, 462 U.S. 296, 103 S.Ct. 2362, 2365, 76 L.Ed.2d 586 (1983). See Parker v. Levy, 417 U.S. 733, 743, 94 S.Ct. 2547, 2555, 41 L.Ed.2d 439 (1974) (Court has long recognized that the military is by necessity, a specialized society); Schlesinger, 420 U.S. at 757, 95 S.Ct. at 1312 (the laws and traditions governing military discipline have a long history ... they are founded on unique military exigencies as powerful now as in the past).
The disruptive effect of extending the exclusionary rule to military administrative discharge proceedings is a price which our society cannot afford to pay.
This disruption is vividly illustrated by the facts of this case. Were we to disallow the use of unlawfully seized evidence in administrative discharge proceedings, the Marine Corps would be forced to permit a person who used and possessed marijuana for sale on a military base to return to active duty.
/-v i • ., , ,, , , . , Our conclusion, that the costs of extend- , . i i ill. , . mg the exclusionary rule to military administrative discharge proceedings exceeds the , ... , ?, . , , , ,, benefits to society, is supported by the following comment of a unanimous Supreme Court in Chappell:
The special status of the military has required, the Constitution contemplated, Congress has created and this Court has long recognized two systems of justice to some extent parallel: one for civilians and one for military personnel (citation omitted). The special nature of military life, the need for unhesitating and decisive action by military officers and equally disciplined responses by enlisted personnel ... “supports] the military establishment’s power to deal with its own personnel. The most obvious reason is that courts are ill-equipped to determine the impact upon discipline that any particular intrusion upon military authority might have.”
Id. 103 g Ct at 2367-68, quoting E. Warren 37 N.Y.U.L.Rev. at 187.8 ’
b. Benefits
While various arguments have been advanced to justify the adoption of the exclusionary rule throughout its “turbulent history,” the Supreme Court has most recently indicated that the prime purpose of the rule is “to deter future unlawful police conduct.” Lopez-Mendoza 104 S.Ct. at 3486; Janis, 428 U.S. at 446, 96 S.Ct. at 3028, citing United States v. Calandra, 414 U.S. 338, 347, 94 S.Ct. 613, 619, 38 L.Ed.2d 561 (1974). The Court has noted that extension of the rule to civil proceedings would provide “marginal deterrence” Janis, 428 U.S. at 453, 96 S.Ct. at 3031 and has cautioned that even in the criminal context, the efficacy of the rule is dubious , , , rr .± , T TT at best. United States v. Leon, — U.S. _ n 6, 104 S.Ct. 3405 3413 n. 6 82 L.Ed.2d 677 (1984).
Lopez-Mendoza informs us that “The exclusionary rule is likely to be most effective when applied to ... intrasovereign violations.” Lopez-Mendoza, 104 S.Ct. at 3486.9 The Court, nevertheless, *1005concluded that the costs of extending the rule to civil deportation proceedings conducted by the Immigration and Naturalization Service (INS) where evidence was seized by INS agents in violation of the fourth amendment outweighed the possibility of any marginal deterrence. Id. 104 S.Ct. at 3486-91.10
We are mindful that in this matter the evidence introduced at the administrative discharge proceeding was gathered by military police who were also members of the Marine Corps. We have carefully weighed that factor against the costs to the Marine Corps of the exclusion of material evidence of the moral fitness of a person to serve in the military. We conclude that the fact that the evidence was seized by intrasover-eign agents did not tip the scale in favor of extending the exclusionary rule.
We do not have the special training or knowledge to fathom the extent of the damage to military discipline which would result from imposition of the exclusionary rule in administrative discharge proceedings. We are certain, however, that the cost far exceeds the dubious “additional marginal deterrence” that might result from such an intrusion upon military authority and discipline.
B. Reversal of Court-Martial Proceedings Not on Merits No Bar Administrative Discharge
Relying on section 6106.1 of the Manual, Garrett contends that the order of the Review Court, dismissing the charge and setting aside all specifications against Garrett, constituted an acquittal and a judicial determination of the merits of his factual guilt of possession and the introduction of marijuana on a Marine Corps base. Alternatively, he asserts that under general res judicata principles, the decision of the Review Court to dismiss the charge against him barred an administrative discharge hearing. Under the doctrine of res judicata, “a final judgment on the merits precludes the parties from relitigating claims which were or could have been raised in that action.” Amaro v. Continental Can Co., 724 F.2d 747, 749 (9th Cir.1984); Nevada v. United States, 463 U.S. 110, 103 S.Ct. 2906, 2918, 77 L.Ed.2d 509 reh’g denied, — U.S.-, 104 S.Ct. 210, 78 L.Ed.2d 186 (1983); Parklane Hosiery Co., Inc. v. Shore, 439 U.S. 322, 326 n. 5, 99 S.Ct. 645, 649 n. 5, 58 L.Ed.2d 552 (1979). Both arguments must fail because the Review Court did not reach the merits of the charges against Garrett.
Section 6106.1 of the Manual provides that a person may not be separated from the Marine Corps for “[cjonduct that has been the subject of judicial proceedings resulting in an acquittal or action having the effect of an acquittal except ... (a) when such action is based upon a judicial determination not going to the merits of the issue of factual guilt of the respondent.” (emphasis added).
As noted above, the Military Review Court did not reach the merits of the issue of Garrett’s factual guilt. After satisfying itself that the evidence introduced by the government was illegally obtained, the court expressly declined to reach any other assignment of error. The Review Court did not discuss the sufficiency of the evidence offered to prove Garrett’s guilt.
*1006The legal basis for the Review Court’s limited inquiry is quite clear, albeit unexpli-cated. Since the Supreme Court’s decision in Weeks v. United States, 232 U.S. 383, 34 S.Ct. 341, 58 L.Ed. 652 (1914), guilt is irrelevant where the government’s evidence was obtained in violation of the fourth amendment. The guilty must go free where the blundering constable gathers his evidence illegally.
Because the Review Court did not determine the merits of Garrett’s factual guilt prior to dismissing the charge against him, section 6106.1 and the doctrine of res judi-cata are inapplicable to the validity of the administrative decision of the Board.
C. Return to Active Duty
Garrett contends that his fifth amendment right to due process was violated by his compelled return to active duty. He alleges that the Commanding General’s sole purpose in taking this action was to give the Board jurisdiction to award an “other than honorable” discharge. According to Garrett, this “act was vindictive and, thus, constituted an arbitrary and capricious act and an abuse of the Commanding General’s discretion.” We disagree.
This court must uphold the decision of the Commanding General unless it is found to be “arbitrary, capricious and an abuse of discretion or otherwise not in accordance with the law.” 5 U.S.C. § 706(2)(A). Under this standard of review, the actions of the Marine Corps are presumed to be valid. KCST-TV Inc. v. FCC, 699 F.2d 1185, 1191 (D.C.Cir.1983); Wilderness Public Rights Fund v. Kleppe, 608 F.2d 1250, 1254 (9th Cir.1979), cert. denied, 446 U.S. 982, 100 S.Ct. 2962, 64 L.Ed.2d 838 (1980).
The Commanding General acted within the scope of his discretion in ordering Garrett returned to active duty. As stated in Pickell v. Reed, 326 F.Supp. 1086, 1089 (N.D.Cal.), aff'd, 446 F.2d 898 (9th Cir.), cert. denied, 404 U.S. 946, 92 S.Ct. 301, 30 L.Ed.2d 262 (1971): “A serviceman does not have a right per se to remain in the service until either court martialed or the expiration of his enlistment. McAulay v. United States, 305 F.2d 836, 158 Ct.Cl. 359 (1962) ... A serviceman’s removal may be accomplished administratively. Rowe v. United States, 167 Ct.Cl. 468 (1964).”
Garrett has failed to point to any evidence in the record that demonstrates that the Commanding General acted vindictively or abused his discretion in returning Garrett to active duty from “appellate leave.” Garrett does not argue that the Commanding General lacked the power to recall him to active duty. The fact that the Commanding General may have ordered him back to active duty to give the Board the power to consider other options than an honorable discharge does not prove vindictiveness or an abuse of discretion. Evidence of Garrett’s possession of marijuana for sale amply supports the Commanding General’s decision that the Board should consider awarding an other than honorable discharge.
D. Hearsay
Garrett further objects to the admission of Agent Garcia’s unsworn statement on the ground that it was hearsay. There is no foundation for this argument.
The strict rules of evidence governing the criminal court-martial proceeding, are not applicable to hearings before the Board. Manual § 6306.1. Furthermore, § 6317 of the Manual provides that testimonial evidence may be presented by unsworn witness statements or any other accurate or reliable means.11
Agent Garcia’s statement was properly admitted into evidence at the Board proceeding.
*1007E. Recorder’s Statements
In his closing argument before the Board, the Recorder referred to the district court’s denial of Garrett’s motion for a temporary restraining order. The Recorder also implied that Garrett had been engaged in “some type” of misconduct as a juvenile. Garrett contends that these statements were prejudicial and outside the scope of the Recorder’s authority.
Section 6315.3 of the Manual sets forth the responsibility of the Recorder to the Board. The Recorder is under a duty to insure “that the Board is presented only such materials and documents which may properly be considered by it.” Id. The section further provides that “[t]he Recorder’s primary responsibility is to exploit all practical sources of information and to bring out all the facts in a manner in order to permit the Board to make fully informed findings and recommendations.” Id.
The Recorder’s comments were directed to an exploration of “all practical sources of information.” We note that Garrett failed to object to these comments at the Board hearing. In any event, the challenged comments appear quite harmless in light of the overwhelming evidence of Garrett’s involvement in serious misconduct meriting discharge from the Marine Corps.
F. NIS Report
Garrett contends that he was denied the right to examine and obtain copies of evidence presented to the Board in violation of section 6304 of the Manual12 Garrett points to the fact that his civilian counsel was only provided the “basic package” of evidence prior to the Board hearing.
Garrett asserts that he was not afforded the opportunity to view or obtain the entire NIS investigation materials which were presented to the Board. This additional “package” contained duplicate copies of the lab report, chain of custody documents and Agent Garcia’s unsworn statement.
We agree that section 6304 of the Manual mandated that Garrett be afforded the opportunity to examine this additional evidence. The facts show, however, that Garrett’s civilian counsel had a full and fair opportunity to examine the entire NIS report at the time it was proferred by the Recorder.
The Marines concede that it is customary to provide advance copies of evidence to counsel. Contrary to Garrett’s contentions, however, the relevant Manual provision does not require prior notice. Manual § 6304. Additionally, Garrett’s military counsel reviewed the NIS report long before the Board was convened. Garrett was neither surprised by nor unfamiliar with the evidence presented before the Board. Thus, no prejudice occurred because his civilian counsel did not receive the report prior to the hearing. Accordingly, the introduction of the full NIS report did not violate Garrett’s right to due process of law.
The judgment of the district court is AFFIRMED.
NORRIS, Circuit Judge, concurring separately:
I concur in Judge Alarcon’s opinion except for Part IIA. My concurrence with Part IIA is limited to its conclusion that the issue of applicability of the exclusionary rule to military discharge proceedings is controlled by INS v. Lopez-Mendoza, — U.S. -, 104 S.Ct. 3479, 82 L.Ed.2d 778 (1984).