"Roll dice and kick ass!"
Hmm i may have misunderstood something here. (it looks rather likely)
Say i am the defender. My opponent moves a squad and i use op fire with one of my units (playing my fire card). Then that unit ends the movement order, and then makes another movement order. Can i then use the same unit (diferent fire card) to do do another op fire?
I was under the impression that you couldnt do that, exept with a hero.
Ah, this is the exception I had in mind when I was making my previous post Lorentz, but I didn't mention it because I wanted to keep my post short.
Yes, Op. Fire is the action which activates a unit; and you are right that you can only activate any unit once per turn to Op. Fire. You are also right that you could activate a Hero to Op. Fire more than once. So your previous comment makes sense in that light. It's also worth noting that Op. Fire actions aren't restricted by Order limits, so the Russian player in S7 could Op. Fire more than once per turn even without the Hero. They'd just have to activate different units each time.
I hope all this makes sense and clears up any confusion you might have about my last comment, or the rules.