Technically it's Wicca, but they have classes of introduction at Lackland AFB in San Antonio, TX and headstones with .... 65 different religious symbols. I am an Air Force mom, but wanted to let everyone know their options. My weather Witch daughter in weather for the USAF. She loves it. just FYI.
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The U.S. military acknowledges Wicca and Paganism as a religions, as you can get the designation on your dog tags. Also, the Pentacle is an approved religious symbol for Military headstones, and there have been some efforts to build Pagan-centric places of worship in specific branches and the academies.
Of course, there had been some controversy in the past regarding Paganism, but it seems there's a concerted effort for recognition.
I found this wiki link with some info. It might lead your to more sources.
https://en.wikipedia.org/wiki/Wiccans_and_Pagans_in_the_United_States_military
The collection of officially sanctioned belief symbols for U.S. military graves is actually pretty heartening to see. The collection is *almost* "something for everybody" -- appropriate, given that the nation's interests have been defended by far more than just members of the Abrahamic faiths. I can't find the URL anymore, but about a year back I read an article about "alternative" faiths and it mentioned a relatively recent (I want to say 2008?) survey at the U.S. Air Force Academy that listed Wicca as the most common non-Christian faith among the cadets attending that year.
Fort Bragg has weekly circle meetings.
Wow I never would have expected the military to be so progressive so yay!