To either unlock or upgrade disasters requires disaster-cards. But their acquisition is purely a matter of luck and unrelated to either skill, strategy or teamwork. I fought in two Club Wars, helped win them both. This resulted in NO new disasters unlocked or upgraded. Why? Because disaster-cards are acquired purely as a matter of chance. For example, my second Club Wars resulted in six war chests - three bronze and three silver. Only one of them delivered any disaster cards. The other five delivered small amounts of cash or golden tickets. Who Cares ?? That one chest delivered four cyan colored disaster cards which were automatically allocated to one Extra-Large class disaster. I had no choice in the matter. There was no bonus whatsoever for winning either one of those two wars - Nothing. Accordingly, I will no longer participate in this worthless scam. I will however take Contest of Mayors assignments that require the collection of war items or the odd attack against a target club and only because the plumbob points reward is not inconsiderable. Oh Yeah - and I have figured out precisely what EA's objective is behind this scam as well.