I served, and There was one time, when a brand new chaplain maid the rounds, and I (being an atheist) joked about being a wiccan, I was willing to make such a silly statement cuz at the time (it was a VERY brief period of time) I was a bit of a golden boy, and I SWEAR TO GOD! (if there is one) This young, asian baptist 2lou chaplain arrived at my dorm (yeah, It's not that bad a life) and asked if wanted to talk, at which point he handed me his FRIGGEN PHONE! and there was a friggen dude claiming to be a wiccan on the phone.
I immediately hung up and appologized to the chaplain, and then he sat down, had a beer and we talked.
Chaplains are servicemembers just like others, they chose to not prosceletize (spelling?) their faith, ONLY so they can serve the needs of the men and women who serve their nation. Like I mentioned, I'm not a believe, but it is JUST as noble, and altruistic on the parts of chaplains to NOT force those they counsel into a particular faith, in fact, they tend to go out of their way to connect their "flock," though it is not the same flock they envision, with their shepherd.
and, unlike all other officer Corps, it is the chaplins who are at their best at their earliest.
In my opinion, if you are thinking about risking your eternal existence in the afterlife because you have conned yourself into believing that you have a better grasp on the Universe than Jesus Christ, C.S. Lewis, Einstein, Moses and Muhammed did, I would reccomend that you at least consult with someone that is equipped with the mental fortitude to spell out both sides of the arguement in a way that someone like yourself can understand.
The very fact that you call yourself an atheist when you are clearly agnostic at best tells me that you should do a little more research. I suggest God In the Docks by CS Lewis. It is not an attempt to sway you one way or the other, but a collection of debates that CS Lewis had with religious figures that took place while he was atheist. He then discusses the path he took as a result of those debates to becoming a man of faith. Just a thought.