What does Harry and Corlath see when they drink the Water of Sight after the banquet?

When it is Harry's turn, she has only to clasp the container, and she sees an image of her horse, with a rider holding a white flag as they ride toward the Residency. When Harry drinks of the water, she sees herself in battle, and her right arm goes numb. Corlath, when he drinks, sees the face of the enemy.