Clan Wars is a new feature of Clash of Clans. The feature allows clans to declare war on other clans. Once a war is declared and accepted, the clans will battle to see which clan is the better clan. How does it work? The mechanics of clan wars are actually very simple. First things first: in case you haven't done so already, you must do the obvious in order to get the chance to participate in a Clan War: rebuild your Clan Castle and join or create a Clan. Now the fun part begins! When there are 10 eligible players in the clan, the leader and co-leader have the option to start a clan war. You get two chances to attack two different bases. The troops you build in your normal base will be used to attack in the Clan War. Make sure your Heroes are at full health before attacking so they can be used during the Clan War attack. Your Clan Castle is automatically recharged with donated troops between attacks. Clan Wars come in different variations- 5v5, 10v10, 15v15, 20v20, 25v25, 30v30, 40v40 and 50v50. The Leader or Co-Leader chooses the members who will participate in the war from those who have CYRILBARRE. • 3 yr. ago. It is most likely determined by the first the length and then the character of your profile tag. I've been playing in a max TH9 clan only for a long time and I will always be the top base on the war map, because I play Clash since release. Since my account is so old my profile tag is one character shorter than all the DX3V.

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