[Mobhack]

1) troop experience of the battery is a primary determinant. So if national experience is low, then that nation is poor at CB.

2) The original game had bonuses for "all-American" CB fires. We do not.

3) Gun range must be equal or more to fire CB at the battery.

4) Observers have nothing whatsoever to do with off-map CB fire. It is targeted by the off-map counter battery organisation who are assumed to use the flash and sound ranging systems or whatever.

5) Pretty much range and experience ratings.

6) To fire off-map as on-map counter battery, just plot fires onto the on-map arty (spotted or smoke puffs). Its much easier than in real life to spot on-map arty and mortars.

Andy