Answer: Percy is angry that his dad didn't come see him himself, but the Nereid cautions Percy not to be so judgmental. The Nereid warns Percy not to trust Hades, and tells him to follow his heart no matter what. She disappears down into the depths of the ocean. Percy, Annabeth, and Grover take a bus to West Hollywood.
By creating another frontline for Germany, the Allies basically forced Germany to split up their forces, weakening their already losing campaign against the Soviets.
