Sorry for posting this in the general area, but I don't know if this is more of a military or diplomatic issue. I have some questions about when you and an ally are at war with a mutual enemy.
1.) Is there any way to coordinate your forces in a joint military operation? Example: I want to tell the Altarians: "The Terran 3rd fleet will rendevous with the Altarian 2nd Fleet in the Omicron Theta system in 4 turns, and from there we shall proceed together to the Drengin homeworld and attack it."
2.) Can I send a fleet to protect one of my ally's planets if it's under threat of invasion? Example: I detect a sizable Drengin task force heading for an Altarian frontier world, which it will reach in 4 turns. The nearest Altarian fleet is 6 turns away, but I have a fleet that's only 3 turns away. Can I dispatch my fleet to defend their colony from the Drengin, even if it means technically violating the Altarians' borders in order to do so? And finally, could that type of action improve relations with my ally?
3.) Can I liberate another civ's planet from an enemy and then return it to the original civ's control (whether they're allied with me or not)? And would doing so improve relations with that civ?