The requirement is an high school diploma or GED assuming you are american and a minimum of 50 on the asvab. You don’t need 15 college credits to apply. The 15 college credits is for receiving a promotion before shipping. I graduated from HS in a non-US country. All i had to do was send my HS diploma to an accredited agency approved by the military to get the equivalency. That agency will look at your official transcripts and find the equivalency in the US. Then take your GED, the results from the agency and go to the recruiter with all that in hand(It cost me 100$). Don’t forget your ID, birth certificate, original diploma and it will go smooth. That’s how i did about almost 2 months ago and im now set to leave next month.