When my uncle joined up, the Sergeant all but forced him to select something for his religious affiliation, so he went with UU as the option least offensive to his sensibilities (He was informed that choosing None/Undecided/Atheist would be a CLM).I'm poking fun a bit at the UU church, basic NES BSing. I do like the concept of an open minded faith based organization. IMHO wars over religion seems silly, though it's really about control of territory and resources. All war is. What I don't like about the UU church is that it's a magnet for moonbats.No dog in the fight: UU claims to have the highest percentage of military veterans of any religion. That may be because Christian religions are so splintered. Military surveys identify anywhere from 12 to 220 religious groupings.
There were just a few dozen choices when he went in, today there are 221! Of these the single most popular option is "no religious beliefs", at 23% of current service members (As garandman mentioned, despite being nearly 3/4 of the total headcount, Christians are divided amongst dozens of sects).