The purpose of Article 39(a) is “to give statutory sanction to pretrial and other hearings without the presence of the members concerning those matters which are amenable to disposition on either a tentative or final basis by the military judge.” The military judge may, and ordinarily should, call the court-martial into session without members to ascertain the accused’s understanding of the right to counsel and forum selection, and the accused’s choices with respect to these matters; dispose of interlocutory matters; hear objections and motions; rule upon other matters that may legally be ruled upon by the military judge, such as admitting evidence; and perform other procedural functions which do not require the presence of members. See , e.g., R.C.M. 901–910. The military judge may hold the arraignment, receive pleas, enter findings of guilty upon an accepted plea of guilty, and conduct presentencing proceedings under R.C.M. 1001 without the members present. Evidence may be admitted and process, including a subpoena, may be issued to compel attendance of witnesses and production of evidence at such sessions. See R.C.M. 703. Article 39(a) authorizes sessions only after charges have been referred to trial and served on the accused, but the accused has an absolute right to object, in time of peace, to any session until the period prescribed by Article 35 has run. See R.C.M. 804 concerning waiver by the accused of the right to be present. See also R.C.M. 802 concerning conferences. See R.C.M. 309 concerning proceedings conducted before referral under Article 30a.