I think the thing that amazed me about this episode is the class division between the lower, middle and upper classes.?? Walls to keep the classes divided? Wow...Karl Marx and his works on the structure of class kept running through my??mind! Ba Sing Se is not the great place I thought the Avatar was going to find to amass a grand army. It was a great episode though!

I guess it will be between the Water troops with Katara and Sokka's father and other warriors from other Earth Kingdom cities that will eventually fight with Aang.