So, after an enormous hoo-hah with the medical section, I finally had my interview yesterday.
In the end I decided I wasn't grown up enough to lead other people; maybe later on, but for the moment I'll just enjoy learning to be in a non-university environment. So I applied to be either a medic or a language specialist in the signals corp. The interviewer was from Signals himself, and had worked closely with Electronic Warfare Operators. He said that they deploy all the time and do a lot of independent work on the frontline and behind enemy lines. After the interview he took me aside and said I'd be an idiot not to pick the Signals job, because I'm perfect for it.
Bottom line, I'm in, and soon I'll know Farsi and maybe Arabic too!
Thanks to everyone who contributed to this thread: it really helped me out.
Cheers, UP