@wandeljw,
I can only speak of my own experience in the service from 1970-'71 to 1974 and with conversations I've had with other vets. I didn't or don't perceive any trend towards it whatsover. I certainly didn't seek out any supremacists nor did I ever knowingly meet any.
However, I won't be so naive as to say that there
couldn't be some sort of connection. I can see a potential correlation between a person whose psyche wants guns around him/her and enjoys militarism and the psyche of white supremacist. After all, it's not a stretch to say such persons hunger for power and control.
That isn't to say all militarists or gun lovers or even most ARE supremacists.
I do recall after the Manson killings, Manson's prediction and belief about imminent race wars was blabbed all over the media.