I don't know if this still applies but due to my high school involvement in ROTC, I was able to enlist and start as an E3 (A1C). A year later, I was E4 (SrA) where I was "stuck" until I got out in 1994. They had just dumped the buck sargeant rank and since i was an admin/tech guy, they weren't sure if my field allowed me to jump into Ssgt or not.
Air Guard was interesting...in those days, overfilling a field was OK. I recall being transferred to Security Police, where I wasn't really needed...so they had me tag along with the guys for shootin' and blowing stuff up. Not bad...55wpm on the keys, and could reassemble an M60 or wire up C4

You never know when you'll need these skills in the office, right?