Opinion of the Court
Quinn, Chief Judge:The accused was convicted of willful disobedience of an order. At trial, he moved for a severance on the ground a coaccused intended to enter a plea of guilty. The motion was denied. He contends the ruling constitutes error because the offense with which he was charged was “committed at a different time and under different circumstances than . . . [the offense] of his co-accused’’ so as not to “even permit a common trial.” At the same time, however, he maintains he and the coaccused with whom he was tried were so “inseparably con*232nected with substantially the same crime” that the failure to grant the motion was prejudicial.
Pursuant to order of the convening authority, the accused and Privates Coy T. Hilburn and Anton C. Stuever, Jr., were arraigned at the same time for a trial in common. Each was charged with willful disobedience, on September 5, 1968, of a lawful command by Major Hector L. Lopez, “to report to Building 465R and participate in the Special Training Program.” Hilburn’s disobedience allegedly occurred at 9:56 a.m., Stuever’s at 10:00 a.m., and the accused’s at 10:20 a.m. Stuever was represented by civilian counsel; the others were represented by appointed military counsel. Civilian counsel moved for a continuance and severance as to Stuever because a probable psychiatric witness had not had time to examine Stuever and counsel had not had time to prepare for trial. The motion was granted. Thereupon, counsel for Hil-burn and the accused moved for severance as to the accused on the ground Hilburn proposed to enter a plea of guilty.
Defense counsel acknowledged it was a “matter of speculation” whether Hilburn’s plea would affect the court members in their consideration of the accused’s guilt or innocence, but he insisted it was “appropriate to avoid that possibility by separating the cases for trial.” He further acknowledged that the offenses alleged were “quite similar both in the factual setting and [in that] they occurred essentially at the same time,” so that the “cases are virtually the same with some minor differences.” (Emphasis supplied.) Responding to questions by the law officer as to whether the evidence would show “combined action,” defense counsel indicated that while there was no “consort” of action, the Article 32 investigation revealed that, minutes apart, each accused was called before the same officer, and “both received the same order and allegedly both refused the same order.” After reading the cases cited to him, the law office? denied the motion.
Common trial of two or more accused is authorized in limited circumstances. The criteria for joinder are prescribed in the Manual for Courts-Martial, United States, 1951, paragraph 331, as follows:
“If two or more persons are charged with the commission of an offense or offenses which, although not jointly committed (26d), were committed at the same time and place and are provable by the same evidence, the convening authority may in his discretion direct a common trial for such offenses only. Offenses charged against different accused which are not closely related should not be tried in a common trial, notwithstanding the fact that some other offenses with which each accused is charged may be closely related. See 69d (Motion to sever). For example, when A and B are each charged with larcenies alleged to have been committed at the same time and place, and B is also charged with an aggravated assault alleged to have been committed several days later, the assault specification against B should not be tried in a common trial, although the charges of larceny may properly be tried at such a trial. The convening authority may exercise his discretion in determining the order in which such charges shall be tried.”
Read literally, the Manual provision can be construed to allow common trial only when the prosecution intends to use the “same evidence” for each accused. Permissible joinder, however, is not so narrowly circumscribed. In United States v Davis, 14 USCMA 607, 34 CMR 387 (1964), we indicated that the Manual provision for joinder of accused in a single trial was patterned upon Rules 8 and 13, Federal Rules of Criminal Procedure. Under the Federal rules, a common trial for two or more accused is authorized when the criminal acts attributable to each accused are logically related to, or connected *233with, a particular transaction. Cataneo v United States, 167 F2d 820 (CA 4th Cir) (1948) ; Kleven v United States, 240 F2d 270 (CA 8th Cir) (1957). The general test is whether the offense alleged against each accused is provable by “substantially” the same evidence. United States v Cohn, 230 F Supp 587, 588 (SD NY) (1964). In Davis we sustained a common trial for two accused charged with separate assaults upon different victims because the acts were committed during a single incident. Here, defense counsel conceded the commonality of the proof, and indicated his only concern was with the “possibility” of prejudice that might result from Hilburn’s entry of a plea of guilty. In effect, he conceded the propriety of the joinder.
The question of prejudice resulting from joinder is separate and different from the question of the propriety of the joinder of accused for common trial. Gorin v United States, 313 F2d 641, 645 (CA 1st Cir) (1963), certiorari denied, 374 US 829, 10 L Ed 2d 1052, 83 S Ct 1870 (1963); cf. Ingram v United States, 272 F2d 567 (CA 4th Cir) (1959). Perhaps the law officer should not have uncritically accepted the defense concession as to the substantial similarity of proof and perhaps he should have made more extensive inquiry into the circumstances than the inquiry he made, but the allegations of the specification which he read and the assurance he received from counsel that the cases were “virtually the same” amply justified his conclusion that trial in common was proper. United States v Davis, supra.
The defense concession as to the substantial similarity of the evidence may be sufficient to preclude the present challenge to the propriety of the joinder of accused for trial. United States v Williams, 10 USCMA 33, 27 CMR 107 (1958); Cupo v United States, 359 F2d 990 (CA DC Cir) (1966), certiorari denied, 385 US 1013, 17 L Ed 2d 549, 87 S Ct 723 (1967). Nevertheless, we have independently reviewed the circumstances surrounding the commission of the separate offenses.
A change of work status was accomplished for over one hundred prisoners at the United States Disciplinary Barracks, Fort Leavenworth, Kansas. Ten prisoners in this group refused to obey the instructions intended to effectuate the change. The three accused arraigned at trial were among the recalcitrant ten, and each refrained from reporting to, or participating in, a project designated Special Training Program. After conferring with the Director of Custody, the Operations Officer, Major Lopez, called the three accused to his office. At slightly different intervals of time, he spoke to each accused. He discussed the work change and then issued a direct order “to report to Building 465R and participate in the Special Training Program.” Each accused refused to obey the order.
Willful disobedience of an order is a highly personalized act. See United States v Charnay, 211 F Supp 904 (SD NY) (1962) . However, the act of each accused was an integral part of the change of work status; and there were common elements of proof as to each act of disobedience to establish a factual relationship between them as part of the change. Such similarity, of proof justifies trial in common. Cataneo v United States, supra; see also United States v Crisona, 271 F Supp 150 (SD NY) (1967). We conclude, therefore, that the joinder was proper.
When a trial in common of several accused is proper, the burden of establishing a reason for severance is on the party requesting severance. Gorin v United States, supra; United States v Rabin, 316 F2d 564 (CA 7th Cir) (1963), certiorari denied, 375 US 815, 11 L Ed 2d 50, 84 S Ct 48 (1963); United States v Alexander, 24 CMR 533 (1957), petition denied, 8 USCMA 763, 24 CMR 311 (1957). Appellate defense counsel contend that *234prejudice is apparent in light of the decision of the Supreme Court of the United States in Bruton v United States, 391 US 123, 20 L Ed 2d 476, 88 S Ct 1620 (1968). In that case, the Supreme Court held that the confession of one accused implicating a coaccused is inadmissible evidence against the coaccused, and that the pernicious effect of implication is not eliminated by instructions to the jurors to limit their consideration of the confession to the accused who made it. Appellate defense counsel contend that, since any distinction between a plea of guilty and an incriminating pretrial statement “is meaningless,” the rationale of Bruton is applicable to this case. The argument misconceives the nature of Hil-burn’s plea of guilty. Hilburn’s confession that he willfully disobeyed the order did not indicate that the accused also willfully disobeyed. See United States v Wampole, 33 CMR 641 (1963).
■To avoid the obviously personal nature of the confession of wrong inherent in Hilburn’s plea of guilty, appellate defense counsel further contend that Hilburn’s plea of guilty “reflected adversely” upon the accused’s “attempt to raise the issue of legality [of the order] ... he was accused of disobeying.” Whatever merit this contention may have in another situation, the effect of Hil-burn’s plea was dissipated when Hil-burn changed the plea to one of not guilty before the Government’s first witness concluded his testimony. See United States v Walter, 14 USCMA 142, 33 CMR 354 (1963). From that point, the trial proceeded with each accused contesting the legality of the order. In this situation, we perceive no prejudice to the accused as a result' of the common trial. United States v Alvarez, 10 USCMA 24, 27 CMR 98 (1958).
The decision of the board of review is affirmed.
Judge DaRden concurs.