I served a mission, college for a couple years, then the Air Force (for 6 years), and now I'm back in college (it's much harder at 32 than it was at 21).
I would say, if you're really not sure, you can always go to school for a year and do ROTC, that's the best way to enter the military too. If you join the military first, you're stuck for the next 4-6 years, even if you want to get a commission it's not guaranteed that they'll let you do that.
If you go do ROTC you can work toward the military goal of becoming and Air Force officer, you'll be working towards a college degree, and you'll still have the freedom to break away, or change your mind, at any time to go on a mission or get married, or dump college for military or military for college.
In the least, it gives you some extra time to get an answer from Heavenly Father because this is an important choice and I'm sure he's got some advice for you, so don't make a choice that will be permanent (military) until you get an answer. I loved the military, but I don't think I would have survived it (spiritually, emotionally, mentally or physically) unless I knew for sure that that's where I was supposed to be during that time in my life.
This is my first post on here, but I felt like it might be good advice for someone making a decision similar to the ones I made about 10 years ago.
