If you are between 6 months - 24 months of finishing your BSN, you are qualified for ANCP (Army Nurse Commissioning Program). Navy has a similar program, not sure about the Air Force. Neither requires RN experience.
Alternatively, if you can commission before you turn 40, you might want to try the Army ROTC route. It is a lot more challenging but also a guaranteed active duty slot, as long as you meet all the requirements. Commissioning at the age of 39 would require a Brigade-level waiver, however. There are 8 brigades throughout the country. Find out if your school participates in ROTC for nurses and if yes, what brigade they belong to.
I went through the ROTC program and loved it. Sometimes I felt like a grandpa but whenever I saw a need, I was there to help. I commissioned at the age of 39, yet later found out I was not the only cadet commissioning so late! There was at least one other cadet but I don't know her branch or brigade. It's not impossible if you put your mind to it.