Hunting would work nicely. Seeing that he is a Knight he is kind of forced to do the fighting though. However, I think that would be a perfect time to make them friends. He wouldn't have really wanted to fight Zarina when she is alone and no threat to him. There would be no honor in that. Maybe the war started because they started using pet dragons?

That makes sense. Maybe there are more dreams than theirs for that matter. So this war, I'm guessing it started around the same time Ollie and Meg started fighting?