Yes, and my eating a whole pizza is a sacrifice to the religion of hedonism.
You're using the term in a way that makes it completely meaningless.
Well, that's not killing a human, but OK. If something like deomcracy isn't "religion" as you would like it defined, is killing in the name of a government morally acceptable, but killing in the name of religion (as you define it) morally unacceptable?
Is it the ritual aspect that makes the religious killing morally unacceptable?
Well the problem is you’re now taking human sacrifice as meaning the same as killing, and then just adding ridiculous things at the end to make it sound more sacrifice-y.
Pretty much everyone today agrees that ritual sacrifice serves no purpose, which makes it clearly immoral given the cost (human life).
As far as killing for country and killing for religion, those categories are just too broad. I don’t think death is the point of any war, it’s just a byproduct of self defense / self preservation in many cases. I feel comfortable saying that the decision to get us into the Vietnam war was mostly immoral, but for a soldier who was drafted and dumped over there, I don’t think it’s necessarily immoral that he kills someone.
There may be a similar example for religion but Im too lazy to think of one right now. It seems a lot harder to have a moral religious killing, though.