A “joint trial” is one in which two or more accused are charged with a joint offense, that is, one in which they acted together with a common purpose. The offense is stated in a single specification and the accused are joined by the pleading. A “common trial” is one in which two or more accused are tried for an offense or offenses which, although not jointly committed, were committed at the same time and place and are provable by the same evidence. A common trial is ordered in the discretion of the referral authority by endorsement on the charge sheet. See R.C.M. 307(c)(5) concerning preparing charges and specifications for joint trials. See R.C.M. 601(e)(3) concerning referral of charges for joint or common trials, and the distinction between the two. See R.C.M. 906(b)(9) concerning motions to sever and other appropriate motions in joint or common trials. In a joint or common trial, each accused may be represented by separate counsel; make challenges for cause; make peremptory challenges ( see R.C.M. 912); cross-examine witnesses; elect whether to testify; introduce evidence; request that the membership of the court include enlisted persons or be limited to officer members, if an enlisted accused; and request trial by military judge alone. In a joint or common trial, evidence which is admissible against only one or some of the joint or several accused may be considered only against the accused concerned. For example, when a stipulation is accepted which was made by only one or some of the accused, the stipulation does not apply to those accused who did not join it. See also Mil. R. Evid. 306. In such instances the members must be instructed that the stipulation or evidence may be considered only with respect to the accused with respect to whom it is accepted.