According to the official preview article found here, Artillery Observer requires the tank to sacrifice its own shooting to allow an artillery tank to draw line of sight from it. However, this clause is not reflected in the crew card in my hands right now.

Artillery Observer: Global Radio Op - 2pts
Once per turn a stationary tank with the Artillery keyword may draw its line of sight from this tank instead of itself when shooting.

So is the card missing something, or is the article reflecting some prototype card that no longer exists?

Also no part of that card's ability specifies that the stationary Artillery tank must be friendly. Compare to

Platoon Coordinator: Global Radio Op - 3pts
Friendly stationary tanks within Close Range of this tank gain +1 Initiative in the Shooting Phase.

Both cards are from the same set, same position, same support role.

Interesting thing... I think that they dropped rule that OP tank must sacrifice its attack to home artillery. Since only artillery tank so far has attack only 3, it would be nonsence to sacrifice for example other Pz IV with att 4 (or basically any other tank, because att 3 is the lowest so far).

This list might change your mind.

Edit to explain: the radio coordinators are stand ins for the Artillery Observers, and the two spare points are for the second Tungsten shell that the builder won't let you equip.

Edited by user Monday, July 31, 2017 7:08:12 PM(UTC)  | Reason: Clarification.

I too am shocked that a card that went to print was not consistently worded in accordance with other cards in the set, Tally.

I was actually trying to be funny. I am with Zerstorer on this. If they need to make a provision for every little innuendo and have to clarify the obvious; then the cards would end up being huge. Frankly the fact that all the cards are not consistently worded has never bothered me.