[X] Scout the border of the Divine Realm. The letter Kelton found has you worried, even though most of the nobles dismiss it. Artemis is willing to back you, though, so she's taking a group of yeomen up to check it out, along with your friends. Maybe it's nothing, maybe it's something, but if nothing else you might get a chance to meet some Divine Realmers.
[X] Spend some time with the other soldiers you know that came with Artemis. Elena still seems a little lonely, and you haven't had a lot of time to talk to Axton and Lancel and Phoebe recently. Plus, spending time with Kelton and Belle is always nice.
[X] Try to spend some time with the leaders of this army you've found yourself a part of. You know Artemis well, of course, and you're an acquaintance of Alejandro Rignali, but you'd like to get to know Princess Alina, Count Sobieski and Sir Rimpler.
[X] Launch a lightning raid into the Empire. You don't have the numbers to fight the armies gathering across the border head on, but Artemis talks about using cavalry and flying raids to hit supply lines and other vulnerable points to slow them down and weaken them for when the major clashes begin.