In the game, A means attack. There are several kinds: in W3, 1, when your soldier or hero is in the selected state, press the A key and point to the back of the opposite team, indicating that the team can attack freely. 2. When your soldier or hero is selected, press the A key to point to a hero or soldier, indicating that the selected team is attacking the target. 3. When your soldier or hero is selected, press the A key and click on your soldier, which means that the goal is compensated (this situation can only be achieved when your soldier HP is below half), which is a means to prevent the other party from gaining experience and money.