Slitherine

If I invade the swiss as the entente (and why not, we'll have no bystanders here!) the game doesn't react very well:
- Italy gets outraged and wants to send troops to its borders, even though Italy attacked
- a turn after the invasion, suddenly the swiss are neutral again
- all the german forces that might have come to their aid are expelled
- the swiss land tiles turn yellow

This scripted response could do with taking the attack alliance into account.

I also find it strange that the Gallipoli units now "magically" appear. Is this a special case? Why do that vs letting the player direct their own PUs how they see fit?

Well, the Gallipoli units are not taken from other units, and they can be sent elsewhere instead. But I agree, many of the events need to check what the alliances of the involved countries are.