It happened to me 2x in a row today and it didnt happen just today. I've been getting this problem for few weeks now.
After about 2-5 minutes in war, i get disconnected.
When i get disconnected i would press Log Out and log back in again. Its not my computer because this also happened to somebody.
Its really pissing me off cause i have to wait hours just for war's and yet i disconnect just like that. Really a waste of time playing this game if players just disconnect in war for no reason.