I have seen that many people have discounted the Whitecloaks as being tied up with the Seanchan, but in WH we were told that Valda left with a large contingent right before they showed up.

I think it is likly that he is going to conquer Andor using the Treaty that Morgause signed as his excuse. This will lead to all sorts of problems as Elayne believes her mother dead and will believe it is a forgery. Valda's inability to produce her Mother will only add to that belief.

This fits in nicely with Jordan's need to point out the problems with war in this time. He makes reference over and over again to the battle changes the moment it begins. This is absolutly true when viewed in this world. With the exception of Rand's team and the Forsaken, no one in this world has any news that is not horridly out of date. Look at the way we have the borderland army showing up where and when they do. The two seperate Aes Sedai groups competing for the Dragon's affection are widly off base due to having only the resources of their time to work with. Even the Ogier are stuck with this as Loial's parents are now stuck in the two rivers looking for him and two days later he is in Caemlyn.

I think this is another time Jordan is going to use this as a plot device and it is the Whitecloaks feeling they have a perfect right to be there, led by Valda with alot of help from Galad (haven't seen him in a while have we?). Just a speculation as I agree with everyone else that all the other armies are tied up.