Tex. Government Code § 432.105: REHEARINGS.

(a) If the convening authority disapproves the finding and sentence of a court-martial, the authority, unless there is lack of sufficient evidence in the record to support the findings, may order a rehearing. The authority shall state the reasons for a disapproval. If the authority disapproves the findings and sentence and does not order a rehearing, the authority shall dismiss the charges.

(b) Each rehearing must take place before a court-martial composed of members who were not members of the court-martial that first heard the case. On a rehearing the accused may not be tried for any offense of which the accused was found not guilty by the first court-martial, and sentence in excess of or more severe than the original sentence may not be imposed, unless the sentence is based on a finding of guilty of an offense not considered on the merits in the original proceedings, or unless the sentence prescribed for the offense is mandatory.

Acts 1987, 70th Leg., ch. 147, Sec. 1, eff. Sept. 1, 1987.