brakedwell (#616),
Not exactly a "judge", but what was known (in my time) as the "Deputy Judge Advocate" . He was analagous to a Magistrates' Clerk in a Civil Court;
..."They preside over all proceedings in the Service courts, which comprise the Court Martial, the Summary Appeal Court, and the Service Civilian Court. The judges control the practice and procedure, give rulings on legal matters, and sum up the evidence for the jury (known as a "Board"). Defendants are entitled to a defending counsel or solicitor, and their unit may provide an Accused's Assisting Officer if they so wish"... [Wiki]
In minor cases (District Court Martials), IIRC, we just got along with a locally appointed Prosecuting and Defending Officers; only a DJA was there to keep the Court on the rails..
Danny.