The only thing that scares me is that this is at all contraversial amongst "conservatives."
The First Amendment unambiguously requires forbids both hostility towards and support for any particular religious viewpoint. Just because I consider Wicca to be a wacky faith with as much basis in reality as Star Wars doesn't mean it should be banned. I know that I'd be pretty ticked if I gave my life as a soldier and my family was not allowed to put a Christian cross on my gravestone. The same First Amendment that guarantees my family that right guarantees the right for a Wiccan soldier.
In the chaplaincy, at least in my years in it, there was recognition of protection against expressions of religion that required the demeaning of other religions in its own practice.
This was upheld in a number of reviews.
Therefore, any religion that used anti-semitic symbols (white aryan religions) could not claim equal protection. The same with Satanism...so much of their practice was actually contra-Christian, for example, desecrated religious symbols of Christianity. There was no equal protection for it.
There is a very sharp eye out in the military for "movements" that are, on their face, absurd. Rostafarian claims of rites requiring reefer were not even considered valid for a moment, and would have been denied automatically.