For the gazillion and umpteenth time, CDO picks whoever they
want to. Yes, there are a few prerequisites like PES status, but
the rest of the time it's pretty much a lassiez faire process. Only
son, girlfriend, prefer the colour blue, that's just all old wives'
tales.
I was there from 1990 to 1993, and I got my letter in mid-1990. I
decided I didn't want in, so I thought I'd give them a bad attitude
and they'd go pick someone more gung-ho.
So I ended up reporting for the tests, at the end of which I was
interviewed by a sargeant. He asked me if I wanted to go to
Commandos, and I asked if I had a choice. He said no, and I said,
"So what the f*ck are you asking me for?".
I found out over the next two and a half years that that was
precisely the mentality they were looking for. Who was to know?