We just added a new “Enemies” tab to the attack and special operations screens in Starpires. When you have dozens of empires in your universe this will help you easily find the empires who you are currently engaged in combat with.
The enemies tab will display empires who have attacked you or you have attacked. Empires which you currently have some type of alliance or treaty with will be excluded from this list. We will continue to make improvements to the game based off of feedback from players.