Go to college now.

So, you are thinking about joining the Army, but you would like to earn a degree first. Why not do both at the same time?

While serving in the Army Reserve, you will have the flexibility to live wherever you want and attend school full time. In return, you’ll have access to many education benefits that will greatly reduce your financial burden.

Want to join the Army as an Officer? The Reserve Officer Training Corps (ROTC) will allow you to undergo Officer training while you attend college as a full-time student.
 http://www.goarmy.com/benefits/education-benefits/go-to-college-now.html