Is there a distinct advantage to joining the military after college?

My fiance wants to drop out of community college and join the Air Force. He believes that if he enlists now he will be accepted into an E-2 officer position and that he could easily advance to a higher rank in a technical MOS. He has expressed interest in having a military career in intelligence.

He is 21 years old and has 1 year of college behind him. He thinks there is no real reason to finish up college before he (if he) enlists, because it would only (according to him) put him one rank above where he would enter now, in an E-3 level officer rank. He wants to use the GI bill to pay for college after his 4-year commitment and then re-enter as a commissioned officer after receiving his 4-year degree.

I think that he would have more opportunities and a better over-all experience in the military if he graduated from college first, but he is worried that he will never be able to pay for college or qualify for loans—unless he goes through the military first. I also don’t think it’s a good idea for him to delay his college education any longer. Right now his school fees are waived and he’s only paying for books. I think the longer he waits to finish school the less likely he will ever go back.