Aircraft Tunnel Vision

[Imp]

Maybe Don and Andy will shed some light on if the AI can turn off weapons.

I will save them the effort no it can't what it can do is pick the right target for the weapon. A plane armed with cannon is probably looking for armour to plink. Its bombload however might be far better suited to dropping on infantry so really the pilot wants to drop them on infantry.
You not the AI have the luxury of turning them off so they are not wasted assuming of course you survive for another pass.
It did not attack infantry by mistake it attacked them because it was a better target for the payload.