Artillery glitch ???

[Jobu88]

It is a 2IC team and like some XO teams they have artillery call rights even with no back pack radio.  It is a game mechanic that is often referred to as the field telephone abstraction.  It's specifically the rank of the individual that gives him artillery calling rights (for arty that does not require an F/O).  So if a unit has an individual of sufficient rank the unit can call in artillery.  If that individual is KIA the unit will lose the ability to call in fire support.  Think of field telephones , runners etc...  

I must have missed that in the game manual.