I will try to update this list as fast and as much as possible.  this is a start though.  To sucessfully attack 6 star Germanic takes 1100 cavaliers.  As our hall grows remember that number can get as low as 800 cavs per attack depending on your heros strength.  If you want to be safe start at 1200 and work our way down.  Germanics are 4 times stronger than Carthage. If you have a list email me so I can add it here!! at sgeiser@cfl.rr.com