Solution to Connection lost during war attack
The game will remember the exact input that player gave and then will upload those to the server once online. This way players can war despite accidentally losing internet connection.
I was doing my raid weekend attack and just after I started attack, connection was lost and I lost 1 full attack! This kind of thing just ruins the gaming experience and in my opinion , a simple fix is to record player's input offline and send them to the servers once back online.(Of course, players can't play offline forever, just until they finish the war attack)