When speaking with the recruiter the only requirements that I needed was a HS Diploma or a GED with some college credits. I needed a fairly clean record as well. You also had to take a test called the ASVAB, with the quality of your score determining what career fields you could choose from. Once all of that was out of the way, it was a matter of picking your career field and ship out date. After that you would go to a processing center and have a complete physical done to make sure there weren't any health issues that would keep you from service. Once you passed that, you would sign the contract and enter the delayed entry program until you went to basic training.