They make it easier to win a defence because they make people slowed down and the wall breakers won't always work at a higherlevel. These are the best things but you don't need to upgrade all of them Max level at a certain town hall but its recommended most are because of the reasons above. ![Wall ammounts] http://clashofclans.wikia.com/wiki/Town_Hall

They make it easier to win a defence because they make people slowed down and the wall breakers won't always work at a higherlevel. These are the best things but you don't need to upgrade all of them Max level at a certain town hall but its recommended most are because of the reasons above. Wall amounts