In a contested trial by general court-martial to a panel of Officer and enlisted court members conducted at the Naval Support Activity, Long Beach, California, appellant was convicted of rape in violation of Article 120, 10 U.S.C. § 920, Uniform Code of Military Justice, and two offenses of indecent acts by having a woman masturbate him in violation of Article 134, UCMJ.1
Each of the three offenses of which appellant was convicted was alleged and found to have occurred on a different date and to have involved a different woman, unrelated to appellant. Although each of the three women were civilians, since the offenses were alleged and found to have occurred at the Long Beach Naval Support Activity, the offenses were clearly service-connected and within the jurisdiction of the court-martial. Relford v. Commandant, 401 U.S. 355, 91 S.Ct. 649, 28 L.Ed.2d 102 (1971).
At the conclusion of the lengthy judicial proceedings in this case the court members sentenced appellant to a dishonorable discharge, confinement at hard labor for eight years, forfeiture of all pay and allowances, and reduction to pay grade E — 1. The convening authority reduced the confinement to five years but otherwise approved the sentence adjudged.2
Appellant has assigned a number of errors, but only two warrant discussion. These two assigned errors each involve the adequacy of the trial judge’s instructions to the court members on findings. First, appellant contends he was prejudiced because the judge did not instruct the court members on the offense of adultery3 as an Article 134, UCMJ, lesser included offense of rape; and second, appellant asserts he was prejudiced as to all the guilty findings because the judge did not advise the court *1142members that they were not to consider appellant’s failure to testify in arriving at their findings.
I
The trial judge did not instruct the court members that adultery was a lesser included offense for them to consider as an alternative to rape. Adultery was not mentioned during the trial proceedings before the court members4 and whether, as appellant now contends, the judge should have given an instruction on adultery depends upon the evidence of record.
The 28 year old alleged rape victim testified that she had been visiting relatives in the civilian community outside the Naval Support Activity while her husband had remained at home in another State. On the evening the rape was reported to have occurred she had accompanied her stepmother to the Enlisted Club at the Naval Support Activity.
Since she was not interested in playing bingo which her stepmother enjoyed, the alleged rape victim parted company with her stepmother and positioned herself in the doorway to the Club’s dance floor until she was invited to join an otherwise all male table.
In accepting the offer and joining the all servicemen group at the table the alleged rape victim took a seat next to appellant, who was then 19 years of age. During the course of the evening she danced with a number of those at the table, including appellant with whom she engaged in considerable conversation. Her testimony implicitly indicated that during their conversation she informed appellant she was married and moreover, she was adamant and unequivocal in stating that throughout the course of the evening her wedding ring was worn exposed on the ring finger of her left hand.5
As the evening progressed the alleged rape victim accompanied appellant outside the dance floor to a balcony area. She stated that sometime thereafter it appeared from the movement of people within the Club that bingo was over for the night; however, she did not see her stepmother among those who had left the bingo area and she therefore decided to look for her.
After she and appellant did some searching for her stepmother, which included checking the parking lot and then returning to the Club’s balcony area, the alleged rape victim testified that appellant suggested that her stepmother might have gone to the lounge of the nearby bowling alley. They then proceeded down a stairway leading outside the Club. While on the stairway the alleged rape victim stated that appellant became amorous. She rejected his advances and he then grabbed her around the neck and threatened to slit her throat and cut off her breasts were she uncooperative. She stated she tried to resist and scream, but he tightened his hold on her throat and pulled her outside the building to a grassy area where he pushed her to the ground and then required her to move back among the bushes.
The alleged rape victim testified that she was in grave fear and pleaded with appellant not to hurt her. She said because of her apprehension she submitted to his desire for sexual relations. Pursuant to his demands for assurance during coitus she complimented him on his performance and when she noticed two shore patrolmen approaching the area she alerted him to their presence. After the sexual act was complete appellant escorted her back into the *1143Club and returned to his table. She then reported the incident.
Special Agent David E. Watson of the Naval Investigative Service, who had interviewed appellant in advance of trial, testified for the prosecution. In his testimony Special Agent Watson indicated that after he had advised appellant of his rights under Article 31(b), UCMJ, and United States v. Tempia, 16 U.S.C.M.A. 629, 37 C.M.R. 249 (1967), appellant voluntarily participated in an interview. During the interview appellant denied the misconduct of which he was then suspected and, with respect to the alleged rape, appellant acknowledged having sexual intercourse with the alleged rape victim, but said that she had voluntarily engaged in intercourse with him.
Rape is defined under Article 120, UCMJ, as the commission of “. . . an act of sexual intercourse [by a male] with a female not his wife, by force and without her consent . . . ”
Unlike rape, adultery involves neither force nor lack of consent and in military law adultery may be defined as an act of sexual intercourse between persons of the opposite sex not married to one another but at least one of whom then had a spouse. See United States v. Melville, 8 U.S.C.M.A. 597, 601, 25 C.M.R. 101, 105 (1958).
That the alleged rape victim was a married woman whose husband was not appellant at the time she and appellant had sexual intercourse is not in dispute. Moreover, it may be inferred from her testimony that appellant was aware of her marital status both from the conversation she said she had with him and from her testimony that she wore her wedding ring throughout the evening.
The military judge is required, pursuant to the Manual for Courts-Martial, United States, 1969 (Revised Edition), paragraph 73a to give “. . . those instructions which are required by the law in the light of the circumstances of the case,” and:
“Every offense which is reasonably raised by the evidence should be mentioned and must be the subject of an instruction with its attendant limitations and should there be doubt this ought to be resolved in favor of the accused. There is no way in which appellate bodies can ascertain what a court-martial uses as a measuring rod to determine the appropriate degrees of an offense unless the gradations in issue are identified clearly by instructions and the accused is entitled to have the accuracy of the rod determined on appeal.” United States v. Floyd, 2 U.S.C.M.A. 183, 188, 7 C.M.R. 64, 69 (1953).
Notwithstanding the alleged rape victim’s testimony that her sexual intercourse with appellant had been nonconsensual and motivated by fear generated by appellant’s unlawful use of force, there was other contradictory evidence before the court members, i. e., appellant’s pretrial statement introduced by the prosecution. This statement unequivocally refuted the reasons given by the alleged rape victim for her participation in sexual intercourse with appellant. Contrary to her testimonial version, appellant’s statement indicated that she had voluntarily engaged in coitus with him. This evidence, together with the evidence of her marital status and appellant’s inferred knowledge of that status, constituted ample evidence placing adultery, a lesser felony of rape, cf. United States v. Melville, supra, in issue.
Since the adultery offense reasonably raised by the evidence was not mentioned during the proceedings by any of the parties to the trial, it is concluded that the trial judge and counsel for both sides were totally unaware that as a result of the evidence introduced by the prosecution, adultery had been placed in issue.
There was no knowing, informed, intelligent waiver by the defense of an appropriate instruction by the trial judge on the lesser offense of adultery which may have excused the judge from giving such an instruction and the judge therefore had a duty to instruct the court members on this lesser offense as an alternative to the crime of rape as appellant now contends. United States v. McGee, 23 U.S.C.M.A. 591, 592, 50 C.M.R. 856, 857, 1 M.J. 193, 194 (1975); *1144United States v. Flipper, 16 U.S.C.M.A. 622, 624, 37 C.M.R. 242, 244 (1967). United States v. Floyd, supra. Also see United States v. Gaiter, 23 U.S.C.M.A. 438, 50 C.M.R. 397, 1 M.J. 54 (1975); United States v. Clark, 22 U.S.C.M.A. 576, 48 C.M.R. 83 (1973).
Since the judge did not instruct the court members on the lesser offense of adultery, correction for this type of prejudicial error would ordinarily require either a rehearing on the alleged rape offense or a reduction in the gravity of the finding of rape to that of adultery with a concomitant reassessment of the sentence. But, there is yet another assigned error affecting all the findings that must be discussed before this case may be disposed of.
II
The other error assigned by appellant warranting discussion concerns the judge’s failure to advise the court members not to consider appellant’s silence against him.
During the session on findings’ instructions conducted before the trial judge without the court members, trial defense counsel’s written request for instructions submitted to the trial judge included a request that the court members be instructed on appellant’s right to remain silent.
The judge advised trial defense counsel that he considered such an instruction “. . . a dangerous one and it highlights the fact that the accused has not testified, in view of that you still want the instruction^]” The defense counsel responded “Yes, sir”, to which the judge replied “Very well.”
Subsequently, during trial counsel’s opening argument to the court members on findings, trial defense counsel objected to what he considered was impermissible argument by trial counsel’s commenting upon appellant’s failure to testify.6 The judge made no express ruling on the objection other than to note it.
Trial defense counsel pressed the matter no further, undoubtedly feeling secure that the instruction previously requested and implicitly promised by the trial judge’s “very well” would be given and would obviate any consideration by the court members of appellant’s silence being weighed by them against appellant in their deliberations on findings. Cf. United States v. Nea, 17 U.S.C.M.A. 363, 38 C.M.R. 161 (1968).
In instructing the court members on findings the trial judge totally omitted giving them the instruction concerning appellant’s right to remain silent.
The competency of an accused to testify in a trial by court-martial is established by statute, and the statute, 18 U.S.C. § 3481, provides that the failure of an accused to request to become a witness shall not be considered against him:
In trial of all persons charged with the commission of offenses against the United States and in all proceedings in courts-martial and courts of inquiry in any State, District, Possession or Territory, the person charged shall, at his own request, be a competent witness. His failure to make such request shall not create any presumption against him.
Not unlike 18 U.S.C. §§ 3481 the Manual for Courts-Martial, paragraph 148e, states:
The accused is at his own request, but not otherwise, a competent witness. His failure to make such a request or to become a witness as to a particular offense charged will not create any inference against him.
In reversing a conviction because the trial court failed to give the jury an instruction that a defendant had the right not to testify and that his failure to testify would not be considered against him the United States Supreme Court, relying upon 18 U.S.C. § 3481, stated:
*1145“To the suggestion that it benefits a defendant who fails to take the stand not to have the attention of the jury directed to that fact, it suffices to say that, however difficult it may be to exercise enlightened self-interest, the accused should be allowed to make his own choice when an Act of Congress authorized him to choose. And when it is urged that it is a psychological impossibility not to have a presumption arise in the minds of jurors against an accused who fails to testify, the short answer is that Congress legislated on a contrary assumption and not without support in experience. It was for Congress to decide whether what it deemed legally significant was psychologically futile. Certainly, despite the vast accumulation of psychological data, we have not yet attained that certitude about the human mind which would justify us in disregarding the will of Congress by a dogmatic assumption that jurors, if properly admonished, neither could nor would heed the instructions of the trial court that the failure of an accused to be a witness in his own cause ‘shall not create any presumption against him.’ ” Bruno v. United States, 308 U.S. 287, 294, 60 S.Ct. 198, 200, 84 L.Ed. 257 (1939). Also see United States v. Farrington, 14 U.S.C.M.A. 614, 34 C.M.R. 394 (1964); United States v. King, 12 U.S.C.M.A. 71, 30 C.M.R. 71 (1960).
In the instant case the record does not indicate whether the trial judge intended to give the defense requested instruction to the court members that they were not to consider appellant’s silence against him and inadvertently omitted to so advise the court members during his findings’ charge, or whether the judge decided not to so instruct the court members because he considered such a course of action to be in appellant’s best interests. If it was for the latter reason, which would be consistent with the view he had expressed to trial defense counsel during the session on findings’ instructions, his reasoning was inconsistent with Bruno v. United States, supra.
For almost a century the law has recognized that an accused might prefer to rely upon the presumption of innocence which the law gives to every accused and decline to become a witness in his own behalf because of his personal characteristics that may do him more harm than good although he be innocent:
“It is not everyone who can safely venture on the witness stand though entirely innocent of the charge against him. Excessive timidity, nervousness when facing others and attempting to explain transactions of a suspicious character, and offenses charged against him, will often confuse and embarrass him to such a degree as to increase rather than remove prejudices against him. It is not everyone, however honest, who would therefore willingly be placed on the witness stand. The statute [i. e., the 1878 progenitor of 18 USC §§ 3481] in tenderness to the weakness of those who from the causes mentioned might refuse to ask to be a witness, particularly when they may have been in some degree compromised by their association with others, declares that the failure of a defendant in a criminal action to request to be a witness shall not create any presumption against him.” Wilson v. United States, 149 U.S. 60, 66, 13 S.Ct. 765, 766, 37 L.Ed. 650, 651-652 (1893).
But, for whatever the reason an accused may decline to become a witness, he is entitled not to have his silence counted against him.
Appellant in the instant case had a statutory right to have the court members, who are not presumed to know the law and who must rely upon the military judge for the law they employ, cf. United States v. Linder, 6 U.S.C.M.A. 669, 674, 20 C.M.R. 385, 390 (1956), advised of his right to remain silent and informed that his failure to have testified was not to be considered against him during their findings’ deliberations. Appellant made such a request but it was not honored.
From the record it cannot be concluded that appellant was not prejudiced because the judge did not give the requested in*1146struction and that the court members’ findings would have been the same had the instruction been given. Therefore, and not unlike the defendant in United States v. Bruno, supra, the appellant’s conviction cannot be allowed to stand.7
Although at the convening authority level an opportunity was presented to take corrective action with respect to the prejudicially deficient instructions of the trial judge, no such action was taken. The convening authority was not informed by the post-trial advice of his staff judge advocate that the lesser offense of adultery was in issue with respect to the alleged crime of rape, nor was the convening authority informed of the prejudicial significance of the trial judge’s omission of an instruction concerning appellant’s right to remain silent. Had the convening authority been properly advised of these matters in the post-trial advice of his staff judge advocate, he undoubtedly would then have taken the corrective action now required in the interests of justice.8
The findings of guilty and the sentence are set aside and the record returned to the Judge Advocate General of the Navy for forwarding to the convening authority who may order a rehearing, or, if he deems that impracticable, dismiss the charges.
. Appellant was found not guilty of assaulting each of the two women who the court members found had masturbated him and he was also found not guilty of wrongfully threatening one of the two. These two women were both unmarried, about the same age as appellant, and considerably younger than the married victim of the alleged rape.
Although the findings of the court members are clearly reflected in the record proper as orally announced by the president of the court, the document containing the written findings from which the president read in announcing findings was not marked as an appellate exhibit and is not included with the record. This document should have been labeled as an appellate exhibit and attached to the record of the proceedings. MCM, 1969 (Rev.), App. 8 at A8-23.
. In acting on the sentence the convening authority directed application of the forfeiture to pay becoming due on and after the date of his action but he did not expressly state when the forfeiture was to apply to allowances. Although no direction was given with respect to allowances, since application of the forfeiture to allowances was not expressly deferred by the convening authority, forfeiture of allowances was effective on the date of his action. Article 57, UCMJ; MCM, 1969 (Rev.), par. 88d (3).
. In his original brief filed here appellant did not contend that adultery was in issue at trial nor did the government mention adultery in its response. The Court requested that the issue of adultery be briefed and in his more recent brief, appellant, for the first time, asserted that adultery was raised by the evidence as a lesser offense of rape.
The government in its two briefs filed here in response to appellant’s more recent brief takes the position that adultery was not in issue during the trial proceedings.
. Trial defense counsel tendered proposed, specific instructions to the trial judge during a session conducted out of the presence of the court members after both sides had rested and before argument on findings was presented.
Contrary to the requirement of MCM, 1969 (Rev.), pars. 82b (5) and 73d, the proposed instructions of the defense were not marked as an appellate exhibit and are not included with the trial record; however, adultery was apparently not mentioned as a lesser offense of rape in the proposed defense instructions since during the session conducted out of the presence of the court members the matter of adultery was never discussed.
. There was other testimony introduced that contradicted her testimonial claim that she was wearing a wedding ring.
. Argument commenting upon the accused’s failure to testify is Constitutionally impermissible, Griffin v. California, 380 U.S. 609, 85 S.Ct. 1229, 14 L.Ed.2d 106 (1965), and when it is left uncorrected by the trial judge prejudice results. The judge may eliminate the prejudicial impact of such improper comment by advising the court members that the accused has an absolute right to remain silent and directing them to completely disregard the impermissible argument. United States v. Seay, 13 U.S.C.M.A. 540, 33 C.M.R. 72 (1963).
. Informed judicial instructions reduce ultimate cost, improve efficiency, and enhance military justice. United States v. Porter, 3 M.L.R. 2613, 2614 (N.C.M.R.1975).
. The convening authority did not have available a book of principles on military justice for convening authorities that would have been of assistance in this case.
Knowledge is the key to the prudent and meaningful exercise of power and such a consolidated book of principles on military justice for convening authorities would be a great benefit to them and, as well, to those providing them with legal advice within . . the carefully designed military justice system established by Congress.” Schlesinger v. Councilman, 420 U.S. 738, 753, 95 S.Ct. 1300, 1310, 43 L.Ed.2d 591 (1975).