You are correct, but I suggest that you read read the changes to the Manual for Courts Martial that occurred in 2017. The amount of discretion now allowed to a military judge is staggering.
As an example, he may deem something so important, or so overwhelming, or so truthful that he may allow admission even where a civilian court may not, based upon such issues as writ of warrant (4th), or fruit-of-the-poison-tree, etc.
It’s rather interesting.
I should clarify. IIRC the broadening of power applied to tribunals. Cannot recall that all military judges had such discretion.
Oh... your right.. I had completely forgotten about that.