26yrs old, want to join infantry Marines, 1yr left in college. Advice?

Hello there sir, I’m 26yrs old I want to join the marines(infantry) thinking of taking asvab next month, I currently have 1year left college but the thing is I cant afford anymore…its 18,000 per semester. Anyhow benefits are not my main reason for enlisting, I just wanted to become respected marine eversince few years back and later become police officer. My question is are there gonna be big differences between with diploma and without diploma? And if I do enlist this year would I be able to see combat? probably not huh? it would suck if just stay in boots till end of contract.This may sound immature but thats how i feel yea so what are your recommendation? thankyou!!

Submitted by: dextterous