Hi, I had to look this up but it interested me as I'm former active duty AF and former civil service for the Army. So, to even apply you need one year ICU experience. It looks like if accepted, you enter into active duty as an officer, probably a 2LT. You'll also need to meet the requirements of being an officer which includes physical fitness requirements, weight standards etc. I'm assuming they'll do the physical fitness requirements before acceptance into the program (or in conjunction with), and you'll have to keep up with this throughout. As of now there are PT (physical training) tests every year (may every 6 months, they keep changing the program), as well as weigh in (more if you're overweight). But I don't think you'll get in if you're overweight. You'll get paid as an officer but also possibly have responsibilities other than school, but probably not many. When you graduate you should be a 1LT, and will then owe the Army 5 years, during this time you'll make Captain. ROTC is for undergrads wanting to go into the military after graduation, it gives you military training while in college, a monthly stipend and pretty much a guarantee into the mitary as an officer. OCS is the school you go to after graduation, before you go to your first job. All military officers go through this, I'm not sure of the length. In the AF when I went in it was pretty short for nurses, longer for other jobs. So if you apply for USAGPAN or join ROTC you'll go in an as an officer. You can look up the salary because it depends on how long you've been in and your rank. I don't know if they count the 3 years of schooling as "time in service" (how long you've been in) but I don't think it's $80K right off the bat, but if you stay in long enough it will be.
It looks like it's a very competitive program and while they take non-military people I think that would be even more competitive, as they're staking a lot on someone who hasn't proven to be a good military officer. I have a friend who's an Army CRNA so I can ask her if she did this program and how many civilians were in it. She was active duty for at least 3-4 years before she got accepted. I personally think you'd have a better chance of getting accepted if you go into the military first, but you have to be aware that there's no guarantee you'll get into the CRNA program or even into the ICU, especially into the ICU as a new nurse. But of course there's no harm in applying, and if you don't get in then you can review your options. Feel free to email me through this site for any questions, I'll ask my friend about how many civilians were in her class if she did this but I'm not sure if she did because I know she doesn't have her DNP yet.