Focus fire

Telling a group of units to attack a single target. Right-click on a target to tell the group to attack. Hold shift and continue right-clicking to queue up a sequence of targets. Most often used with ranged units, because focusing all their damage on one target at a time rather then spreading it out usually will cause groups of enemies to die faster and thus have fewer attacks. In equal battles of ranged units, the player who focus fires and dances better usually wins.

Dancing eliminates much of the benefits of focus firing.

Overkill is also a bad use of focus firing. 10 tanks should not focus fire on 10 dragoons, because they fire slowly and only a few shots are necessary. Since the rest of the shots are wasted and take a long time to cooldown, focus firing would actually let the dragoon win what is normally a lopsided battle. In these situations, attack move or manually spreading the attacks would be better.