Mississippi Code Title 33. Military Affairs § 33-13-185

(1) For each general, special and summary court-martial, the authority convening the court shall detail trial counsel and defense counsel and such assistants as he considers appropriate. No person who has acted as investigating officer, military judge or court member in any case may act later as trial counsel, assistant trial counsel or, unless expressly requested by the accused, as defense counsel, or assistant defense counsel in the same case. No person who has acted for the prosecution may act later in the same case for the defense, nor may any person who has acted for the defense act later in the same case for the prosecution.

(2) Trial counsel and defense counsel detailed for any court-martial: