Opportunity Fire

[McIvan]

Medium will normally see infantry shoot two hexes out. But that's a pretty good number, still decent FP at that range (depending on the unit of course). German infantry can usually shoot 3 hexes with good effect, other nations not so much. Still, nothing worse than having wasted action points left over.

Op fire for AFVs...just generally not a good idea to reveal your location, except in situations perhaps when the enemy can only come at you one way and there is a lot of you or something else intervenes like the terrain will soak up their movement and render the enemy unable to fire back in that particular turn.

Global settings sets MAXIMUMS. They don't override individual lower settings. If you have a global AFV medium range setting vs infantry, you can individually set some AFVs to short or none, but you can't set to long...well, you can, but it won't work.

You're pretty much spot on in your post, I reckon.