They:
* break you down in boot camp to build you up in their image, with their values (esp Marines)
* force you to accept teachings that are demonstrably false (source: friend went to nuclear engineering school, nearly got kicked out for pointing out flaws in how they taught nuclear theory).
* control where you live, where you sleep, what you eat
* indoctrinate you (onboarding at my base was literally called "indoc[trination]")
* bestow status for pleasing the leaders of the cult (the career game)
Personally, I think the indoc makes service members believe lives and national security are on the line. Anymore, I believe the biggest threat to our country (and thus the lives of those who protect it) is ourselves.
I don't disagree this can be effective, but strongly believe the military is a cult.
It seems to me hippies who see the biggest threats as internal are always a product of a secure environment. I suspect such attitudes don't thrive in places with war on the ground. America has never had a major invasion in terms of amount of land invaded. We seem particularly prone to this idea that war happens elsewhere and is not a real and serious threat.
Regardless, my comment wasn't intended to be judgemental, I apologize if it came off that way. I just wanted to point out the similarities between effective cult leadership and military indoctrination, but should have been more clear that I was speaking more academically.