This can be s good explanation! Now base is L7. So thanks for the hint, will continue to open new battles. The problem will be, if enemy will reload army strongly and I will not be able to win next ones as I will not want to spent so many units to fully reduce level to the below 1.
have a nice day!
The important thing is reducing the level to below level 1. I think that there is a maximum of 45 points of damage that can be done with each battle (9 points each round for 5 rounds). A base that is above level 4 thus cannot be eliminated in one battle as its hit points are its base points. I would thus suggest continuing battle until it is fully reduced.