I could be wrong, so someone feel free to correct me, when I was gathering information from recruiters and ROTC personnel, I was told that most ROTC for the army, would put you in the reserve due to being overstaffed with nurses. This is what I was told from the ROTC person, and he also informed me that most of the scholarships are EXTREMELY hard to obtain now due to budget cuts. So if I wanted to be Active Duty the Army would be a waste of my time, (but if your looking at reserves this might be good for you actually, unless you want some of the scholarship benefits)
For me, I was trying to decide between the Air Force and Navy, and for awhile I was leaning towards the Navy because I literally could not get any information on the Air Force (both from recruiters and ROTC) till carolinapooh, and ?? (I'm on my phone, and I cant look up your name without losing this! I'll give you credit when I get home! promise!) which finalized my decision on the Air Force, and conveniently the Air Force ROTC detachment at my school finally got back in touch with me.
Basically, doing Air Force ROTC guarantees me a slot in the NTP program (under the assumption I get a field training spot, and from what I told nurses are guaranteed a spot for it), which allows me to avoid the whole application process and the headache of worrying if I'm accepted or not. Even the recruiter for ROTC mentioned it, even though there is a small part of me that feels like with the budget cuts being a nursing major won't just give me a slot for field training, but we'll see. As for the reserve part, I'm not too sure on how that works with the Air Force ROTC, but I'm sure someone on the forums can help you out.
ALSO, from what I was told, applying while your in the program provides you with less competition since you're not competing after graduation and you're against people with years of experience, for the Navy process.
I'm sorry if this is a jumbled mess, trying to type on my phone with little to no typos is nearly impossible. Especially with auto-correct.