If I were to become a reservist, which branch of the military should I join?

I’m an art teacher, and rather against killing and wars and such, but recent developments in our domestic budget require me to get a second, stable job. I remember when I was in JROTC In high school, I found the structure of a military chain of command stimulating. I actually would have joined the US armed forces right out of high school if I hadn’t been on ritalin at the time (I’m off now, of course). Does anyone have any suggestions/personal experiences they can share?