There’s quite a bit of evidence that’s already been released just in mainstream media thus far, so it’s not like the woman vanished without a trace. Some of it, perhaps most of it, is circumstantial, however if you look at the totality of what’s been released, it’s a rather damning picture IMO. There’s blood and hair in the home and at least one vehicle. There’s evidence of a recent fire in the backyard, as well as evidence he purchased a burn pit, garbage bags, shovel, ax, and coveralls. He then went to great lengths to try and destroy the evidence where he purchased these items. There’s evidence he was on or near Camp Bullis in the wee hours of the morning after her disappearance. There’s evidence he lied about her whereabouts, saying she was at a nearby free-standing ER. There’s witness statements saying she told multiple people that if she ever disappeared, it was because he killed her. These are just the few pieces of information that have been publicly released. I assume they haven’t released ALL of the evidence they’ve collected thus far, but honestly, even if they have, even without an actual body, I think a reasonable person would conclude she is dead and he is most likely responsible. He will need to offer some sort of plausible explanation for all of the above if he wants a court martial to believe he had nothing to do with her disappearance and presumed death.