Troop Disappearance, Hero Rollback
I don't know if my problem is related to the Online Kingdom Mode not saving properly or not but here it is...
After completing the quest Kill Thy Neighbor (I think that's what its called), I took my victorious army home for celebration (I put them at the well to heal). I decided to recruit some more troops, namely archers but then decided to remove them from queue and my game crashed. I logged back on around two hours later and the returning army is completely gone and my hero rolled back around five levels. Sad to lose my whole army to some kind of unlikely combination of events.