I was playing with General Carodus(sp?) with his two sentinels and decided to attack one of the lesser realms.  The first attack occurred outside the outpost and I was the winner with no casualties.  The enemy had re-spawned in his city so the next turn I attacked.  He had one other NPC, he ran and the NPC attacked my group in tactical combat.  I killed the NPC and the enemy escaped.  Since I had one move left after the battle I went to attack the outpost.  After the battle which showed no casualties, the two sentinels were gone from the stack.  In addition the city converted to my territory after the next turn but I could not select it since every time I did I got the crossed swords indicating a fight was required.  I continued to attack the city for the next three moves and finally gave up figuring there was a bug.