You get bash-points after every batlle. The bash-points shows you how successful you have been as attacker (offensive bash-points) or as defender (defensive basah-points). The number of bash-points gained from killing a unit depends on you being an attacker of defender.
See the table for more information.
|unit||Offensive bash-points||Defensive bash-points|
You can compare your bash-points with those from other players in the rankings. In the rankings there are columns for offensive, defensive and the sum of bash-points.