Well, I'm pretty sure I didn't do that, so that's was probably my problem!
That's what I've picked up (for one thing, in was on the Steam forums and still an active thread). I've fiddled so far, but it's crashing out on the mission (which appears to be due to the MP3 fix, which I'm downloading a theoretical fix for now!)
The first thing that struck me about this game was that I recognised the music from endless games of Civ II Fantasic Worlds (which had a mod of XCom and music on the CD!) It's kinda weird, then coming it at from the other end!
Edit: Can't get the MP3/.ogg music to work, and the CD is...sketchy (a bit like Civ II used to be, actually!) So, back to the default music for me I think.
So, not really played much, but enough to fiddle around and work the controls. And do a mission, and get three out of my eight guys killed right away, because I had no idea what I was doing! (Yes, on beginner mode..!)
But that was a trail run; now I actually have some idea what to do, so I'll start a fresh game 'pon the morrow, and try again.